Publications

2021

Toward the Recovery of Platinum Group Metals from a Spent Automotive Catalyst with Supported Ionic Liquid Phases

Olga Lanaridi, Apurba Ranjan Sahoo, Andreas Limbeck, Shaghayegh Naghdi, Dominik Eder, Elisabeth Eitenberger, Zita Csendes, Michael Schnürch, Katharina Bica-Schröder*

ACS Sustainable Chem. Eng. 2020, 9, 1, 375-386

DOI: https://doi.org/10.1021/acssuschemeng.0c07384

We present a novel approach for the separation and recovery of Pt and Pd leached from a spent automotive catalyst relying on conventional and polymerized supported ionic liquid phases (SILPs and polySILPs, respectively). A variety of parameters with possible effects on the separation behavior, namely, acidity and concentration of the platinum group metal (PGM) containing solution, as well as different SILP and polySILP loadings, were evaluated for the separation of PGMs in the presence of high concentrations of Al, Fe, Zn, and Ce.

Carbon Nanotubes. Synthesis, Properties, and New Developments in Research

Marianna V. Kharlamova, Dominik Eder

Book Chapter. In: Synthesis and Applications of Nanocarbons, eds. Jean-Charles Anault, Dominik Eder
2020, 107-147

DOI: https://doi.org/10.1002/9781119429418.ch4

Carbon nanotubes (CNTs) consisting of rolled up layers of sp2 carbon atoms were first observed in the product of the hydrogenation reaction of CO over Fe catalyst. This chapter briefly introduces properties and basic aspects of the synthesis and postsynthesis treatments of single-walled CNTs (SWCNTs) and covers new developments in CNT research aimed at obtaining SWCNTs with controlled properties. 

Carbon Nanotubes. Synthesis, Properties, and New Developments in Research

Marianna V. Kharlamova, Dominik Eder

Book Chapter. In: Synthesis and Applications of Nanocarbons, eds. Jean-Charles Anault, Dominik Eder
2020, 107-147

DOI: https://doi.org/10.1002/9781119429418.ch4

Carbon nanotubes (CNTs) consisting of rolled up layers of sp2 carbon atoms were first observed in the product of the hydrogenation reaction of CO over Fe catalyst. This chapter briefly introduces properties and basic aspects of the synthesis and postsynthesis treatments of single-walled CNTs (SWCNTs) and covers new developments in CNT research aimed at obtaining SWCNTs with controlled properties. 

Resolving few-layer antimonene/graphene heterostructures

Tushar Gupta, Kenan Elibol, Stefan Hummel, Michael Stöger-Pollach, Clemens Mangler, Gerlinde Habler, Jannik C. Meyer, Dominik Eder, Bernhard C. Bayer

npj 2D Materials and Applications 2021, 5, 53

DOI:https://doi.org/10.1038/s41699-021-00230-3

Two-dimensional (2D) antimony (Sb, “antimonene”) is of interest in electronics and batteries. Sb however exhibits a large allotropic structural diversity, which is also influenced by its support. Thus, Sb heterostructure formation is key in 2D Sb integration. Particularly, 2D Sb/graphene interfaces are important. We thus study here few-layered 2D Sb/graphene heterostructures with atomic resolution (scanning) transmission electron microscopy.

Layered double hydroxide (LDH)-based materials: A mini-review on strategies to improve the performance for photocatalytic water splitting

Hanane Boumeriame, Eliana S. Da Silva, Alexey Cherevan, Tarik Chafik, Joaquim L Faria, Dominik Eder

Journal of Energy Chemistry, 2021, 64, 406-431

DOI:https://doi.org/10.1016/j.jechem.2021.04.050

The high energy demand we currently face in society and the subsequent large consumption of fossil fuels cause its depletion and increase the pollution levels. The quest for the production of clean energy from renewable and sustainable sources remains open.

Ti-based MOFs: New insights on the impact of ligand composition and hole scavengers on stability, charge separation and photocatalytic hydrogen evolution

Jia Wang, Alexey Cherevan, Celine Hannecart, Shaghayegh Naghdi, Sreejith P. Nandan, Tushar Gupta, Dominik Eder

Applied Catalysis B, 2021, 283, 119626

DOI: https://doi.org/10.1016/j.apcatb.2020.119626

We synthesized a series of isostructural MIL-125-Ti with various terephthalic: amino-terephthalic acid ratios and evaluated their photostability and performance for photocatalytic hydrogen evolution in aqueous solutions with different hole scavengers. We demonstrate that the commonly used triethanolamine corroded the MOFs under photocatalytic conditions, in contrast to methanol.

Direct visualization of local deformations in suspended few-layer graphene membranes by coupled in situ atomic force and scanning electron microscopy

Olga Lanaridi, Apurba Ranjan Sahoo, Andreas Limbeck, Shaghayegh Naghdi, Dominik Eder, Elisabeth Eitenberger, Zita Csendes, Michael Schnürch, Katharina Bica-Schröder*

ACS Sustainable Chem. Eng. 2020, 9, 1, 375-386

DOI: https://doi.org/10.1021/acssuschemeng.0c07384

We present a novel approach for the separation and recovery of Pt and Pd leached from a spent automotive catalyst relying on conventional and polymerized supported ionic liquid phases (SILPs and polySILPs, respectively). A variety of parameters with possible effects on the separation behavior, namely, acidity and concentration of the platinum group metal (PGM) containing solution, as well as different SILP and polySILP loadings, were evaluated for the separation of PGMs in the presence of high concentrations of Al, Fe, Zn, and Ce.

Samarium-Doped Nickel Oxide for Superior Inverted Perovskite Solar Cells: Insight into Doping Effect for Electronic Applications

Huaxi Bao, Minyong Du, Hui Wang, Kai Wang, Xiaokun Zuo, Fangyv Liu, Lu Liu, Dominik Eder, Alexey Cherevan, Shimin Wang, Li Wan, Shuai Thao, Shengzhong (Frank) Liu

Adv. Functional Materials 2021

DOI: https://doi.org/10.1002/9781119429418.ch4

Hole transport layers (HTLs) play a key role in perovskite solar cells (PSCs), particularly in the inverted PSCs (IPSCs) that demand more in its stability. In this study, samarium-doped nickel oxide (Sm:NiOx) nanoparticles are synthesized via a chemical precipitation method and deposited as a hole transport layer in the IPSCs.

2020

Toward the Recovery of Platinum Group Metals from a Spent Automotive Catalyst with Supported Ionic Liquid Phases

Olga Lanaridi, Apurba Ranjan Sahoo, Andreas Limbeck, Shaghayegh Naghdi, Dominik Eder, Elisabeth Eitenberger, Zita Csendes, Michael Schnürch, Katharina Bica-Schröder*

ACS Sustainable Chem. Eng. 2020, 9, 1, 375-386

DOI: https://doi.org/10.1021/acssuschemeng.0c07384

We present a novel approach for the separation and recovery of Pt and Pd leached from a spent automotive catalyst relying on conventional and polymerized supported ionic liquid phases (SILPs and polySILPs, respectively). A variety of parameters with possible effects on the separation behavior, namely, acidity and concentration of the platinum group metal (PGM) containing solution, as well as different SILP and polySILP loadings, were evaluated for the separation of PGMs in the presence of high concentrations of Al, Fe, Zn, and Ce.

Carbon Nanotubes. Synthesis, Properties, and New Developments in Research

Marianna V. Kharlamova, Dominik Eder

Book Chapter. In: Synthesis and Applications of Nanocarbons, eds. Jean-Charles Anault, Dominik Eder
2020, 107-147

DOI: https://doi.org/10.1002/9781119429418.ch4

Carbon nanotubes (CNTs) consisting of rolled up layers of sp2 carbon atoms were first observed in the product of the hydrogenation reaction of CO over Fe catalyst. This chapter briefly introduces properties and basic aspects of the synthesis and postsynthesis treatments of single-walled CNTs (SWCNTs) and covers new developments in CNT research aimed at obtaining SWCNTs with controlled properties. 

Electrochemical Behavior of Graphene in a Deep Eutectic Solvent

David Fuchs, Bernhard C. Bayer*, Tushar Gupta, Gabriel L. Szabo, Richard A. Wilhelm, Dominik Eder, Jannik C. Meyer, Sandra Steiner, Bernhard Gollas*

ACS Appl. Mater. Interfaces 2020, 12, 36, 40937-40948

DOI: https://doi.org/10.1021/acsami.0c11467

Graphene electrodes and deep eutectic solvents (DESs) are two emerging material systems that have individually shown highly promising properties in electrochemical applications. To date, however, it has not been tested whether the combination of graphene and DESs can yield synergistic effects in electrochemistry. 

The role of contaminations in ion beam spectroscopy with freestanding 2D materials: A study on thermal treatment

A. Niggas, J. Schwestka, S. Creutzburg, T. Gupta, D. Eder, B. C. Bayer, F. Aumayr, Dominik Eder
J. Chem. Phys. 2020, 153, 014702

DOI: https://doi.org/10.1063/5.0011255

As surface-only materials, freestanding 2D materials are known to have a high level of contamination—mostly in the form of hydrocarbons, water, and residuals from production and exfoliation. For well-designed experiments, it is of particular importance to develop effective cleaning procedures, especially since standard surface science techniques are typically not applicable. We perform ion spectroscopy with highly charged ions transmitted through freestanding atomically thin materials and present two techniques to achieve clean samples, both based on thermal treatment.

Process Pathway Controlled Evolution of Phase and Van-der-Waals Epitaxy in In/InO on Graphene Heterostructures

Kenan Elibol, Clemens Mangler, Tushar Gupta, Georg Zagler, Dominik Eder, Jannik C. Meyer, Jani Kotakoski, Bernhard C. Bayer

Adv. Functional Materials 2020, 30, 34, 2003300

DOI: https://doi.org/10.1002/adfm.202003300

Applications of 2D materials often require deposition of non-2D metals and non-2D metal-oxides but mechanisms of such non-2D/2D interfacing remain elusive. Here, atomically resolved scanning transmission electron microscopy follows in a “quasi-in-situ” fashion the entire fabrication cycle of application-relevant non-2D In and non-2D In2O3 nanostructures on graphene and thereby clarifies key factors governing non-2D/2D interfacing the atomic scale. 

In Situ Pt Photodeposition and Methanol Photooxidation on Pt/TiO: Pt-Loading-Dependent Photocatalytic Reaction Pathways Studied by Liquid-Phase Infrared Spectroscopy

Greta M. Haselmann, Bettina Baumgartner, Jia Wang, Karin Wieland, Tushar Gupta, Christopher Herzig, Andreas Limbeck, Bernhard Lendl*, Dominik Eder*
ACS Catal. 2020, 10, 5, 2964-2977

DOI: https://doi.org/10.1021/acscatal.9b05588

We developed a top-irradiated, liquid-phase attenuated total reflectance Fourier transform infrared (ATR-FTIR) setup that allows time-resolved investigations of both Pt particle growth during in situ photodeposition via monitoring of the Pt0–COads band on TiO2 thin films as well as the photooxidation of methanol in aqueous environments.  

Polyoxometalates on Functional Substrates: Concepts, Synergies, and Future Perspectives

Alexey S. Cherevan*, Sreejith P. Nandan, Isolda Roger, Rongji Liu, Carsten Streb*, Dominik Eder*

Adv. Sci. 2020, 1903511

DOI: https://doi.org/10.1002/advs.201903511

Polyoxometalates (POMs) are molecular metal oxide clusters that feature a broad range of structures and functionalities, making them one of the most versatile classes of inorganic molecular materials. They have attracted widespread attention in homogeneous catalysis. 

Effect of boron incorporation on the bioactivity, structure, and mechanical properties of ordered mesoporous bioactive glasses
Leonie Deilmann, Oliver Winter, Bianca Cerrutti, Henrik Bradtmüller, Christopher Herzig, Andreas Limbeck, Olaf Lahayne, Christian Hellmich, Hellmut Eckert*  and Dominik Eder *
J. Mater. Chem. B, 2020, 8, 1456-1465

DOI: https://doi.org/10.1039/C9TB01805K 

B2O3 doped (0.5–15 mol%) ordered mesoporous bioactive glasses (MBG) with the composition 80% SiO2–15% CaO–5% P2O5 were synthesized via a sol–gel based evaporation-induced self-assembly process using the block-copolymer P123 as a structure directing agent and characterized by biokinetic, mechanical and structural investigations.  

(CH3NH3)3Bi2I9 perovskite films fabricated via a two-stage electric-field-assisted reactive deposition method for solar cells application

Yulong Wang, Yue Liu, Ya Xu, Congqiang Zhang, Huaxi BaoaJi Wang, Zhiguang Guo, Li Wan, Dominik, Eder, Shimin Wang

Electrochimica Acta, Volume 329, 1 January 2020, 135173

DOI: https://doi.org/10.1016/j.electacta.2019.135173

Methylammonium bismuth iodide ((CH3NH3)3Bi2I9, MBI) is a promising alternative to perovskite solar cells (PSCs) due to its air stability and low-toxicity. Herein, a two-stage electric-field-assisted reactive deposition method has been introduced to prepare MBI films for the first time. PSCs based on MBI films were fabricated and characterized. 

2019

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Nanoscale aluminum plasmonic waveguide with monolithically integrated germanium detector
M. Sistani, M. G. Bartmann, N. A. Güsken, R. F. Oulton, H. Keshmiri, M. S. Seifner, S. Barth, N. Fukata, M. A. Luong, M.I. den Hertog, A. Lugstein 
Applied Physics Letters 2019, 115, 161107

DOI: https://doi.org/10.1063/1.5115342

Surface plasmon polaritons have rapidly established themselves as a promising concept for molecular sensing, near-field nanoimaging, and transmission lines for emerging integrated ultracompact photonic circuits. In this letter, we demonstrate a highly compact surface plasmon polariton detector based on an axial metal-semiconductor-metal nanowire heterostructure device.

Femtosecond laser-assisted synthesis of Ni/Au BONs in various alcoholic solvents

Niusha Lasemi, Christian Rentenberger, Robert Pospichal, Alexey S. Cherevan,Martin Pfaffeneder-Kmen, Gerhard Liedl, Dominik Eder

Applied Physics A 2019, 125, 8, 544

DOI: https://doi.org/10.1007/s00339-019-2826-z

Crystalline Ni/Au bimetallic oxide nanoparticles with various forms of crystallographic systems and defects were generated by femtosecond laser ablation of nickel–gold target in alcoholic solvents. The nature of the liquid can influence the chemical composition, stability, and size distribution of laser-synthesized nanoparticles.

Rate-Limiting Steps of Dye Degradation over Titania-Silica Core-Shell Photocatalysts

Ariane Giesriegl, Jakob Blaschke, Shaghayegh Naghdi, Dominik Eder

Catalysts 2019, 9, 7, 583

DOI:https://doi.org/10.3390/catal9070583

Anti-solvent spin-coating for improving morphology of lead-free (CH3NH3)3Bi2I9 perovskite films

Zhihui Liu, Miaomiao Chen, Li Wan, Yue Liu, Yulong Wang, Yisheng Gan, Zhiguang Guo, Dominik Eder, Shimin Wang

SN Applied Sciences 2019, 1:706

DOI: https://doi.org/10.1007/s42452-019-0727-6

Methylammonium iodide bismuthate ((CH3NH3)3Bi2I9) (MIB) perovskite has attracted research attention because of its low toxicity and stability in air. However, MIB perovskite also has its inherent defects, e.g., MIB films have too many pinholes and large indirect band gap.

Revealing the doping effect of encapsulated lead halogenides on single-walled carbon nanotubes

Marianna V. Kharlamova, Christian Kramberger, Paolo Rudatis, Thomas Pichler, Dominik Eder

Applied Physics A 2019, 125:320

DOI: https://doi.org/10.1007/s00339-019-2626-5

We have investigated the electronic properties of single-walled carbon nanotubes (SWCNTs) filled with lead chloride, lead bromide (PbBr2) and lead iodide (PbI2). The filling of SWCNTs and formation of encapsulated one-dimensional nanocrystals of the salts were directly confirmed by high-resolution scanning transmission electron microscopy.

Synthesis and Properties of Single-Walled Carbon Nanotubes Filled with Metal Halogenides and Metallocenes

Marianna V. Kharlamova, Dominik Eder

Book Chapter: Cabon Nanotubes, Intech Open Limited 2019

DOI: https://doi.org/10.5772/intechopen.85062

This chapter reviews the current status of the research on the electronic properties of single-walled carbon nanotubes (SWCNTs) filled with metal halogenides and metallocenes and growth kinetics of inner SWCNTs inside metallocene-filled nanotubes.

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Immobilization of Co, Mn, Ni and Fe oxide co-catalysts on TiO2 for photocatalytic water splitting reactions

Jasmin S. Schubert, Janko Popovic, Greta M. Haselmann, Sreejith P. Nandan, Jia Wang, Ariane Giesriegl, Alexey S. Cherevan*, Dominik Eder*

Journal of Materials Chemistry A 2019, 7, 18568-18579

DOI: https://doi.org/10.1039/C9TA05637H

Here we report a systematic study of a series of non-noble-metal co-catalysts based on Co, Mn, Ni and Fe oxides that were prepared by wet impregnation of the corresponding acetylacetonate precursors onto a model TiO2 substrate, followed by their oxidative decomposition.

2018

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Ordered Mesoporous TiO2 Gyroids: Effects of Pore Architecture and Nb‐Doping on Photocatalytic Hydrogen Evolution under UV and Visible Irradiation

Tobias Sebastian Dörr, Leonie Deilmann, Greta Haselmann, Alexey Cherevan, Peng Zhang, Peter Blaha, Peter William de Oliveira, Tobias Kraus, Dominik Eder

Advanced Energy Materials 2018, 8, 36, 1802566

DOI: https://doi.org/10.1002/aenm.201802566

Superior hydrogen evolution is achieved by using highly ordered mesoporous pure and Nb‐doped TiO₂ with alternating gyroid architecture due to their large pores and 3D connectivity. The incorporation of Nb⁵⁺ has different effects on visible and UV‐based photocatalysis.

Comparison of Doping Levels of Single‐Walled Carbon Nanotubes Synthesized by Arc‐Discharge and Chemical Vapor Deposition Methods by Encapsulated Silver Chloride

Marianna V. Kharlamova, Christian Kramberger, Oleg Domanov, Andreas Mittelberger, Takeshi Saito, Kazuhiro Yanagi, Thomas Pichler, Dominik Eder

physica status solidi (b) 2018, 255, 12, 1800178

DOI: https://doi.org/10.1002/pssb.201800178

Kharlamova et al. perform the filling of single‐walled carbon nanotubes (SWCNTs) synthesized by the arc‐discharge and chemical vapor deposition methods with silver chloride. The electronic properties of the filled nanotubes are characterized by Raman spectroscopy and X‐ray photoelectron spectoscopy. The authors reveal different doping levels of SWCNTs synthesized by the different methods.

Enhancing antibiofilm activity with functional chitosan nanoparticles targeting biofilm cells and biofilm matrix

Yulong Tan, Su Ma, Matthias Leonhard, Doris Moser, Greta M. Haselmann, Jia Wang, Dominik Eder, Berit Schneider-Stickler

Carbohydrate Polymers 2018, 200, 35-42

DOI: https://doi.org/10.1016/j.carbpol.2018.07.072

Bacterial biofilms play a key role during infections, which are associated with an increased morbidity and mortality. The classical antibiotic therapy cannot eradicate biofilm-related infections because biofilm bacteria display high drug resistance due to biofilm matrix.

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Mesoporous Semiconductors: A New Model To Assess Accessible Surface Area and Increased Photocatalytic Activity?

Alexey S. Cherevan*, Leonie Deilmann, Tobias Weller, Dominik Eder*, Roland Marschall*

ACS Applied Energy Materials 2018, 1, 11, 5787-5799

DOI: https://doi.org/10.1021/acsaem.8b01123

As accepted article version free to download: [link], [pdf]

Mesoporous photocatalysts have gained tremendous attention in the past decade by demonstrating that increased surface area and porosity can strongly improve their performance. In fact, all reports on mesoporous semiconductors corroborate this scenario. But is it possible to quantify and compare the reported advantages of the mesopores and the increased surface area between different works?

Fermi level engineering of metallicity-sorted metallic single-walled carbon nanotubes by encapsulation of few-atom-thick crystals of silver chloride

Marianna V. Kharlamova, Christian Kramberger, Oleg Domanov, Andreas Mittelberger, Kazuhiro Yanagi, Thomas Pichler, Dominik Eder

Journal of Materials Science 2018, 53, 18, 13018-13029

DOI: https://doi.org/10.1007/s10853-018-2575-y

In the present work, the channels of metallicity-sorted metallic single-walled carbon nanotubes (SWCNTs) have been filled with silver chloride. The data of high-resolution scanning transmission electron microscopy proved the filling of the nanotube channels and formation of few-atom-thick crystals of silver chloride.

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Atomic-Scale in Situ Observations of Crystallization and Restructuring Processes in Two-Dimensional MoS2 Films

Bernhard C. Bayer, Reinhard Kaindl, Mohammad Reza Ahmadpour Monazam, Toma Susi, Jani Kotakoski, Tushar Gupta, Dominik Eder, Wolfgang Waldhauser, Jannik C. Meyer

ACS Nano 2018, 12, 8, 8758-8769

DOI: https://doi.org/10.1021/acsnano.8b04945

We employ atomically resolved and element-specific scanning transmission electron microscopy (STEM) to visualize in situ and at the atomic scale the crystallization and restructuring processes of two-dimensional (2D) molybdenum disulfide (MoS2) films. To this end, we deposit a model heterostructure of thin amorphous MoS2 films onto freestanding graphene membranes used as high-resolution STEM supports.

Solar Energy 2018 High efficiency hole c

High-efficiency hole-conductor-free rutile TiO2-Nanorod/CH3NH3PbI3 heterojunction solar cells with commercial carbon ink as counter-electrode

Miaomiao Chen, Qiuping Zhang, Li Wan, Yisheng Gan, Zhihui Liu, Yulong Wang, Yue Liu, Jia Wang, Fengxiang Chen, Dominik Eder, Shimin Wang

Solar Energy 2018, 170, 1087-1094

DOI: https://doi.org/10.1016/j.solener.2018.05.049

This work demonstrates the fabrication of a high-efficiency, hole-conductor-free, solid-state perovskite solar cell with TiO2-nanorod arrays (NRAs) as photoanodes and commercial carbon ink as counter-electrodes. TiO2-NRA films of various thicknesses were deposited on FTO electrodes through hydrothermal method for different reaction durations.

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How to Evaluate and Manipulate Charge Transfer and Photocatalytic Response at Hybrid Nanocarbon–Metal Oxide Interfaces

Nina Kemnade, Paul Gebhardt, Greta M. Haselmann, Alexey Cherevan, Gerhard Wilde, Dominik Eder

Advanced Functional Materials 2018, 28, 1704730

DOI: dx.doi.org/10.1002/adfm.201704730

A novel hybrid system enables monitoring and tuning of interfacial charge transfer and manipulation of photocatalytic properties in nanocarbon–inorganic hybrids through implementation of ultrathin dielectric barrier layers using atomic layer deposition. Distance‐dependent quenching studies with solid‐state photoluminescence reveal electron conduction through the barrier layer as the rate‐limiting step.

2018_Journal of Alloys_Influence of Ruti

Influence of Rutile-TiO2 nanorod arrays on Pb-free (CHNH)BiI-based hybrid perovskite solar cells fabricated through two-step sequential solution process

Miaomiao Chen, Li Wan, Mengqin Kong, Hang Hu, Yisheng Gan, Jia Wang, Fengxiang Chen, Zhiguang Guo, Dominik Eder, Shimin Wang

Journal of Alloys and Compounds 2018, 738, 422-431

DOI: https://doi.org/10.1016/j.jallcom.2017.12.188

The organic–inorganic perovskite compound (CH3NH3)3Bi2I9 (MBI) has lower toxicity and higher stability than lead-based perovskite. In this work, we fabricated MBI perovskite-based solar cells (PSCs) through a two-step sequential-solution process by using rutile TiO2 nanorod array (NRA) films as the electron transporting layer (ETL) for the first time.

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Ice Nucleation Activity of Graphene and Graphene Oxides

Thomas Häusler, Paul Gebhardt, Daniel Iglesias, Christoph Rameshan, Silvia Marchesan, Dominik Eder, Hinrich Grothe

J. Phys. Chem. C 2018, 122, 15, 8182-8190

DOI: https://doi.org/10.1021/acs.jpcc.7b10675

Aerosols can act as cloud condensation nuclei and/or ice-nucleating particles (INPs), influencing cloud properties. In particular, INPs show a variety of different and complex mechanisms when interacting with water during the freezing process. To gain a fundamental understanding of the heterogeneous freezing mechanisms, studies with proxies for atmospheric INPs must be performed.

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Beware of Doping: Ta2O5 Nanotube Photocatalyst Using CNTs as Hard Templates

Alexey Cherevan*, Paul Gebhart, Andreas Kunzmann, Rubén D. Costa, Dominik Eder*

ACS Appl. Energy Mater. 2018, 1, 3, 1259-1267

DOI: https://doi.org/10.1021/acsaem.8b00006

As accepted article version free to download: [link], [pdf]

Nanostructuring constitutes a promising strategy to increase efficiency and stability of contemporary photocatalysts. Here, we report on the synthesis of highly crystalline Ta2O5 nanotubes (NTs) by using carbon nanotubes (CNTs) as sacrificial hard templates and elucidate the role of residual Fe nanoparticles—often used as catalyst for the CNT growth—on their photocatalytic performance toward H2 evolution.

Silver Chloride Encapsulation-Induced Modifications of Raman Modes of Metallicity-Sorted Semiconducting Single-Walled Carbon Nanotubes

Marianna V. Kharlamova, Christian Kramberger, Andreas Mittelberger, Kazuhiro Yanagi, Thomas Pichler, Dominik Eder

Journal of Spectroscopy 2018, Article ID 5987428

DOI: https://doi.org/10.1155/2018/5987428

The internal channels of semiconducting single-walled carbon nanotubes (SWCNTs) were filled with silver chloride. The filling was confirmed by high-resolution scanning transmission electron microscopy. The filling-induced modifications of Raman modes of SWCNTs were analyzed.

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A crystalline and 3D periodically ordered mesoporous quaternary semiconductor for photocatalytic hydrogen generation

Tobias Weller, Leonie Deilmann, Jana Timm, Tobias S. Dörr, Peter A. Beaucage, Alexey S. Cherevan, Ulrich B. Wiesner, Dominik Eder, Roland Marschall

Nanoscale 2018, 10, 3225-3234

DOI: https://doi.org/10.1039/C7NR09251B

The first crystalline and 3D periodically ordered mesoporous quaternary semiconductor for photocatalystic hydrogen production has been prepared.

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Early-Stage Deactivation of Platinum-Loaded TiO2 Using In Situ Photodeposition during Photocatalytic Hydrogen Evolution

Greta M. Haselmann, Dominik Eder

ACS Catal. 2017, 7, 7, 4668-4675

DOI: https://doi.org/10.1021/acscatal.7b00845

This work unravels a sudden deactivation of Pt/TiO2 (P25) during the initial stages of photocatalytic H2 evolution from aqueous solution that, until now, has gone unnoticed, using a unique combination of in situ photodeposition of Pt with an on-line gas detector system.

2017

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Growth, structure and stability of sputter-deposited MoS2 thin films

Reinhard Kaindl, Bernhard C. Bayer, Rolan Resel, Thomas Müller, Viera Skakalova, Gerlinde Habler, Rainer Abart, Alexey S. Cherevan, Dominik Eder, Maxime Blatter, Fabian Fischer, Jannik C. Meyer, Dmitry K. Polyushkin, Wolfgang Waldhauser

Beilstein Jounal of Nanotechnology 2017, 8,1115-1126

DOI: https://doi.org/10.3762/bjnano.8.113

Molybdenum disulphide (MoS2) thin films have received increasing interest as device-active layers in low-dimensional electronicsand also as novel catalysts in electrochemical processes such as the hydrogen evolution reaction (HER) in electrochemical watersplitting. For both types of applications, industrially scalable fabrication methods with good control over the MoS2 film propertiesare crucial.

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Large area photoelectrodes based on hybrids of CNT fibres and ALD-grown TiO2

A. Moya, Nina Kemnade, M. R. Osorio, Alexey Cherevan, D. Granados, Dominik Eder, J. Vilatela

Jounal of materials chemistry A 2017, 5, 47, 24695-24706

DOI: https://doi.org/10.1039/C7TA08074C

Hybridisation is a powerful strategy towards the synthesis of next generation multifunctional materials for environmental and sustainable energy applications. Here, we report a new inorganic/nanocarbon hybrid material prepared by atomically controlled deposition of a monocrystalline TiO2 layer that conformally coats a macroscopic carbon nanotube (CNT) fiber.

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Nontoxic (CHNH)BiIperovskite solar cells free of hole conductors with an alternative architectural design and a solution-processable approach

Mengqin Kong, Hang Hu, Li Wan, Miaomiao Chen, Yisheng Gan, Jia Wang, Fengxiang Chen, Binghai Dong, Dominik Eder, Shimin Wang

RSC advances 2017,7,56,35549-35557

DOI: https://doi.org/10.1039/C7RA04924B

2016

Dual Excitation Transient Photocurrent Measurement for Charge Transfer Studies in Nanocarbon Hybrids and Composites

Alexey S. Cherevan, Dominik Eder

Advanced Materials Interfaces 2016, 3, 16, 1600244
DOI: https://doi.org/10.1002/admi.201600244

As accepted article version free to download: [link], [pdf]

A new technique, dual excitation transient photocurrent measurement, which enables to deconvolute intrinsic photoresponse of nanocarbons from interfacial charge transfer processes in nanocarbon‐inorganic hybrids and composites, is reported. The technique can be extended to other nanocarbon‐based systems with a wide range of semiconductors and allows quantitative analysis of the charge transfer process.

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Atomic Layer Deposition of TiO2 for a High-Efficiency Hole-Blocking Layer in Hole-Conductor-Free Perovskite Solar Cells Processed in Ambient Air

Hang Hu, Binghai Dong, Huating Hu, Fengxiang Chen, Mengqin Kong, Qiuping Zhang, Tianyue Luo, Li Zhao, Zhiguang Guo, Jing Li, Zuxun Xu, Shimin Wang, Dominik Eder, Li Wan

ACS applied materials & interfaces, 8, 28, 17999-18007
DOI: https://doi.org/10.1021/acsami.6b02701

In this study we design and construct high-efficiency, low-cost, highly stable, hole-conductor-free, solid-state perovskite solar cells, with TiO2 as the electron transport layer (ETL) and carbon as the hole collection layer, in ambient air.

Back Cover: Hierarchical Ternary MoO2/MoS2/Heteroatom‐Doped Carbon Hybrid Materials for High‐Performance Lithium‐Ion Storage

Haidong Liu, Huating Hu, Jun Wang, Philip Niehoff, Xin He, Elie Paillard, Dominik Eder, Martin Winter, Jie Li

ChemElectroChem 2016,3,6,1027
DOI: https://doi.org/10.1002/celc.201600062

The Back Cover picture illustrates how three components (MoO2/MoS2/heteroatom‐doped carbon) can be hybridized as a novel hierarchical architecture through a one‐pot solvothermal process with the assistance of an ionic liquid and a polymer, which reveals an attractive electrochemical performance for lithium‐ion storage.

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Effect of Aluminum Ion Incorporation on the Bioactivity and Structure in Mesoporous Bioactive Glasses

S. Melchers, T. Uesbeck, Oliver Winter, H. Eckert, Dominik Eder

Chem. Mater. 2016, 28, 10, 3254-3264
DOI: https://doi.org/10.1021/acs.chemmater.5b04117

This work is dedicated to biokinetic and structural investigations of Al2O3 doping (0.5 to 15 mol %) in ordered mesoporous bioactive glasses (MBGs), based on the composition 80% SiO2–15% CaO–5% P2O5 (in mol %).

2015

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Ordered gyroidal tantalum oxide photocatalysts: eliminating diffusion limitations and tuning surface barriers

Alexey Cherevan, Spencer Robbins, Dennis Dieterle, Paul Gebhardt, Ulrich Wiesner, Dominik Eder

Nanoscale 2016, 8, 37, 16694-16701
DOI: https://doi.org/10.1039/C6NR04430A

In this work we synthesized well-ordered, Ta2O5 films with a 3D-interconnected gyroid mesopore architecture with large pore sizes beyond 30 nm and extended crystalline domains through self-assembly of tailor-made triblock-terpolymers.

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Oxygen vacancies and interfaces enhancing photocatalytic hydrogen production in mesoporous CNT/TiO2 hybrids

Alicia Moya, Alexey Cherevan, Silvia Marchesan, Paul Gebhardt, Maurizio Prato, Dominik Eder, Juan J. Vilatela

Chem. Mater. 2016, 28, 10, 3254-3264
DOI: https://doi.org/10.1016/j.apcatb.2015.05.052

 

We demonstrate a unique route towards hierarchical assemblies of mesoporous TiO2 and CNT/TiO2 photocatalysts by a combination of electrospinning and sol–gel methods. The resulting materials exhibit a mesoporous network of highly crystalline, well-connected inorganic nanocrystals with an order of magnitude higher photocatalytic activity than individualised TiO2 nanoparticles.

Near-Ambient-Pressure X-ray Photoelectron Spectroscopy Study of Methane-Induced Carbon Deposition on Clean and Copper-Modified Polycrystalline Nickel Materials

Raffael Rameshan, Lukas Mayr, Bernhard Klötzer, Dominik Eder, Axel Knop-Gericke, Michael Hävecker, Raoul Blume, Robert Schlögl, Dmitry Y. Zemlyanov, Simon Penner

J. Phys. Chem. C 2015, 119, 48, 26948-26958
DOI:https://doi.org/10.1021/acs.jpcc.5b07317

In order to simulate solid-oxide fuel cell (SOFC)-related coking mechanisms of Ni, methane-induced surface carbide and carbon growth was studied under close-to-real conditions by synchrotron-based near-ambient-pressure (NAP) X-ray photoelectron spectroscopy (XPS) in the temperature region between 250 and 600 °C.

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Going nano with protic ionic liquids—the synthesis of carbon coated Li3V2(PO4)3 nanoparticles encapsulated in a carbon matrix for high power lithium-ion batteries

Xiaofei Zhang, Ruben-Simon Kühnel, Huating Hu, Dominik Eder, Andrea Balducci

Nano Energy 2015, 12, 207-214
DOI: https://doi.org/10.1016/j.nanoen.2014.12.008

A solution-chemistry approach was developed to prepare carbon-coated Li3V2(PO4)3 nanoparticles embedded in a micrometer-sized carbon matrix. The material was obtained by a facile one-pot synthesis involving a protic ionic liquid as a soft template and carbon source.

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Non-destructive functionalisation for atomic layer deposition of metal oxides on carbon nanotubes: effect of linking agents and defects

Nina Kemnade, C. J. Shearer, D. J. Dieterle, Alexey S. Cherevan, Paul Gebhardt, G. Wilde, Dominik Eder

Nanoscale 2015, 7, 3028-3034
DOI: https://doi.org/10.1039/C4NR04615C

The hybridisation of metal oxides and nanocarbons has created a promising new class of functional materils for environmental and sustainable energy applications.

Biomimetic synthesis and characterization of hydroxyapatite/graphene oxide hybrid coating on Mg alloy with enhanced corrosion resistance

Fang Gao, Chenyang Xu, Huating Hu, Qi Wang, Yuanyang Gao, Hao Chen, Qiannan Guo, Dazhong Chen, Dominik Eder

Materials Letters 2015, 138, 25-28
DOI: https://doi.org/10.1016/j.matlet.2014.09.088

An effective biomimetic method for preparation of hydroxyapatite/graphene oxide (HA/GO) hybrid coating on AZ91 magnesium alloy was firstly proposed.