1
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Dreyer M, Hagemann U, Heidelmann M, Budiyanto E, Cosanne N, Ortega KF, Najafishirtari S, Hartmann N, Tüysüz H, Behrens M. Beneficial Effects of Low Iron Contents on Cobalt‐Containing Spinel Catalysts in the Gas Phase 2‐Propanol Oxidation. ChemCatChem 2022. [DOI: 10.1002/cctc.202200472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Maik Dreyer
- University of Duisburg-Essen: Universitat Duisburg-Essen Faculty of Chemistry GERMANY
| | - Ulrich Hagemann
- University of Duisburg-Essen: Universitat Duisburg-Essen ICAN GERMANY
| | - Markus Heidelmann
- University of Duisburg-Essen: Universitat Duisburg-Essen ICAN GERMANY
| | - Eko Budiyanto
- Max-Planck-Institute für Kohlenforschung: Max-Planck-Institut fur Kohlenforschung Heterogeneous Catalysis GERMANY
| | - Nicolas Cosanne
- Christian-Albrechts-Universität zu Kiel: Christian-Albrechts-Universitat zu Kiel Institute of Inorganic Chemistry GERMANY
| | - Klaus Friedel Ortega
- Christian-Albrechts-Universität zu Kiel: Christian-Albrechts-Universitat zu Kiel Institut of Inorganic Chemistry GERMANY
| | - Sharif Najafishirtari
- Christian-Albrechts-Universität zu Kiel: Christian-Albrechts-Universitat zu Kiel Institute of Inorganic Chemistry GERMANY
| | - Nils Hartmann
- Universität Duisburg-Essen: Universitat Duisburg-Essen ICAN GERMANY
| | - Harun Tüysüz
- Max-Planck-Institute für Kohlenforschung: Max-Planck-Institut fur Kohlenforschung Heterogeneous Catalysis GERMANY
| | - Malte Behrens
- Kiel University Institute of Inorganic Chemistry Max-Eyth-Str. 2 24118 Kiel GERMANY
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2
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Deeloed W, Priamushko T, Čížek J, Suramitr S, Kleitz F. Defect-Engineered Hydroxylated Mesoporous Spinel Oxides as Bifunctional Electrocatalysts for Oxygen Reduction and Evolution Reactions. ACS APPLIED MATERIALS & INTERFACES 2022; 14:23307-23321. [PMID: 35561262 PMCID: PMC9136850 DOI: 10.1021/acsami.2c00254] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Accepted: 04/29/2022] [Indexed: 06/01/2023]
Abstract
In this work, defect-rich ordered mesoporous spinel oxides, including CoCo2O4, NiCo2O4, and ZnCo2O4, were developed as bifunctional electrocatalysts toward oxygen reduction and evolution reactions (ORR and OER, respectively). The materials are synthesized via nanocasting and modified by chemical treatment with 0.1 M NaBH4 solution to enhance the defect concentration. The synthesized samples have metal and oxygen divacancies (VCo + VO) as the primary defect sites, as indicated by positron annihilation lifetime spectroscopy (PALS). Cation substitution in the spinel structure induces a higher number of oxygen vacancies. The increased number of surface defects and the synergistic effect between two incorporated metals provide a high activity in both the OER and ORR in the case of NiCo2O4 and ZnCo2O4. Especially, ZnCo2O4 exhibits the highest OER/ORR activity. The defect engineering with 0.1 M NaBH4 solution results in a metal-hydroxylated surface (M-OH) and enhanced the catalytic activity for the post-treated metal oxides in the ORR and OER. This fundamental investigation of the defective structure of the mixed metal oxides offers some useful insights into further development of highly active electrocatalysts through defect engineering methods.
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Affiliation(s)
- Wanchai Deeloed
- Department
of Inorganic Chemistry − Functional Materials, Faculty of Chemistry, University of Vienna, A-1090 Wien, Austria
- Department
of Chemistry, Faculty of Science, Kasetsart
University, Bangkok 10900, Thailand
| | - Tatiana Priamushko
- Department
of Inorganic Chemistry − Functional Materials, Faculty of Chemistry, University of Vienna, A-1090 Wien, Austria
| | - Jakub Čížek
- Department
of Low-Temperature Physics, Faculty of Mathematics and Physics, Charles University, V Holešovičkách 2, CZ-180 00 Praha 8, Czech Republic
| | - Songwut Suramitr
- Department
of Chemistry, Faculty of Science, Kasetsart
University, Bangkok 10900, Thailand
| | - Freddy Kleitz
- Department
of Inorganic Chemistry − Functional Materials, Faculty of Chemistry, University of Vienna, A-1090 Wien, Austria
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3
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Budiyanto E, Tüysüz H. Cobalt Oxide Nanowires with Controllable Diameter and Crystal Structures for the Oxygen Evolution Reaction. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202200065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Eko Budiyanto
- Max-Planck-Institut für Kohlenforschung: Max-Planck-Institut fur Kohlenforschung Heterogeneous Catalysis GERMANY
| | - Harun Tüysüz
- Max-Planck-Institut für Kohlenforschung: Max-Planck-Institut fur Kohlenforschung Heterogeneous Catalysis Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr GERMANY
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4
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Cao X, Yu S, He Z, Cai Z, Huang K, Zhang L. Impregnation Synthesized Cu@MIL‐101(Cr) Catalyzes the Oxidation of Styrene to Benzaldehyde with TBHP**. ChemistrySelect 2022. [DOI: 10.1002/slct.202104279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Xinjie Cao
- School of Chemistry and Chemical Engineering Southeast University Jiangning District Nanjing 211189 China
| | - Sibing Yu
- School of Chemistry and Chemical Engineering Southeast University Jiangning District Nanjing 211189 China
| | - Zhipeng He
- School of Chemistry and Chemical Engineering Southeast University Jiangning District Nanjing 211189 China
| | - Zhenyu Cai
- School of Chemistry and Chemical Engineering Southeast University Jiangning District Nanjing 211189 China
| | - Kai Huang
- School of Chemistry and Chemical Engineering Southeast University Jiangning District Nanjing 211189 China
| | - Lei Zhang
- Intelligent Transportation System Research Center Southeast University Jiangning District Nanjing 211189 China
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5
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Zerebecki S, Salamon S, Landers J, Yang Y, Tong Y, Budiyanto E, Waffel D, Dreyer M, Saddeler S, Kox T, Kenmoe S, Spohr E, Schulz S, Behrens M, Muhler M, Tüysüz H, Campen RK, Wende H, Reichenberger S, Barcikowski S. Engineering of Cation Occupancy of CoFe2O4 Oxidation Catalysts by Nanosecond, Single‐Pulse Laser Excitation in Water. ChemCatChem 2022. [DOI: 10.1002/cctc.202101785] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Swen Zerebecki
- University of Duisburg Essen - Campus Duisburg: Universitat Duisburg-Essen Technical Chemistry I GERMANY
| | - Soma Salamon
- Universität Duisburg-Essen: Universitat Duisburg-Essen Faculty of Physics GERMANY
| | - Joachim Landers
- Universität Duisburg-Essen: Universitat Duisburg-Essen Faculty of Physics GERMANY
| | - Yuke Yang
- Universität Duisburg-Essen: Universitat Duisburg-Essen Faculty of Physics GERMANY
| | - Yujin Tong
- Universität Duisburg-Essen: Universitat Duisburg-Essen Faculty of Physics GERMANY
| | - Eko Budiyanto
- Max-Planck-Institut für Kohlenforschung: Max-Planck-Institut fur Kohlenforschung Heterogenous Catalysis and Sustainable Energy GERMANY
| | - Daniel Waffel
- Ruhr-Universität Bochum: Ruhr-Universitat Bochum Laboratory of Industrial Chemistry GERMANY
| | - Maik Dreyer
- Universität Duisburg-Essen: Universitat Duisburg-Essen Inorganic Chemistry GERMANY
| | - Sascha Saddeler
- University of Duisburg Essen - Campus Duisburg: Universitat Duisburg-Essen Inorganic Chemistry GERMANY
| | - Tim Kox
- University of Duisburg Essen - Campus Duisburg: Universitat Duisburg-Essen Theoretical Chemistry GERMANY
| | - Stephane Kenmoe
- University of Duisburg Essen - Campus Duisburg: Universitat Duisburg-Essen Theoretical Chemistry GERMANY
| | - Eckhard Spohr
- University of Duisburg Essen - Campus Duisburg: Universitat Duisburg-Essen Theoretical Chemistry GERMANY
| | - Stephan Schulz
- University of Duisburg Essen - Campus Duisburg: Universitat Duisburg-Essen Inorganic Chemistry GERMANY
| | - Malte Behrens
- Christian-Albrechts-Universität zu Kiel: Christian-Albrechts-Universitat zu Kiel Inorganic Chemistry GERMANY
| | - Martin Muhler
- Ruhr-Universität Bochum: Ruhr-Universitat Bochum Industrial Chemistry GERMANY
| | - Harun Tüysüz
- Max-Planck-Institut für Kohlenforschung: Max-Planck-Institut fur Kohlenforschung Heterogenous Catalysis and Sustainabile Energy GERMANY
| | - Richard Kramer Campen
- University of Duisburg Essen - Campus Duisburg: Universitat Duisburg-Essen Faculty of Physics GERMANY
| | - Heiko Wende
- University of Duisburg Essen - Campus Duisburg: Universitat Duisburg-Essen Faculty of Physics GERMANY
| | - Sven Reichenberger
- Universitat Duisburg-Essen Technical Chemistry 1 Universitätsstraße 7 45141 Essen GERMANY
| | - Stephan Barcikowski
- University of Duisburg Essen - Campus Duisburg: Universitat Duisburg-Essen Technical Chemistry I GERMANY
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6
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Büker J, Angel S, Salamon S, Landers J, Falk T, Wende H, Wiggers H, Schulz C, Muhler M, Peng B. Structure–activity correlation in aerobic cyclohexene oxidation and peroxide decomposition over Co xFe 3−xO 4 spinel oxides. Catal Sci Technol 2022. [DOI: 10.1039/d2cy00505k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Aerobic cyclohexene oxidation and peroxide decomposition in the liquid phase were performed over a series of CoxFe3−xO4 spinel catalysts exhibiting a volcano plot for the catalytic activity with a maximum at x = 1.
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Affiliation(s)
- Julia Büker
- Laboratory of Industrial Chemistry, Ruhr University Bochum, 44780 Bochum, Germany
| | - Steven Angel
- IVG Institute for Combustion and Gas Dynamics – Reactive Fluids and CENIDE Center for Nanointegration, University of Duisburg-Essen, 47057 Duisburg, Germany
| | - Soma Salamon
- Faculty of Physics, University of Duisburg-Essen, 47057 Duisburg, Germany
| | - Joachim Landers
- Faculty of Physics, University of Duisburg-Essen, 47057 Duisburg, Germany
| | - Tobias Falk
- Laboratory of Industrial Chemistry, Ruhr University Bochum, 44780 Bochum, Germany
| | - Heiko Wende
- Faculty of Physics, University of Duisburg-Essen, 47057 Duisburg, Germany
| | - Hartmut Wiggers
- IVG Institute for Combustion and Gas Dynamics – Reactive Fluids and CENIDE Center for Nanointegration, University of Duisburg-Essen, 47057 Duisburg, Germany
| | - Christof Schulz
- IVG Institute for Combustion and Gas Dynamics – Reactive Fluids and CENIDE Center for Nanointegration, University of Duisburg-Essen, 47057 Duisburg, Germany
| | - Martin Muhler
- Laboratory of Industrial Chemistry, Ruhr University Bochum, 44780 Bochum, Germany
- Max Planck Institute for Chemical Energy Conversion, 45470 Mülheim an der Ruhr, Germany
| | - Baoxiang Peng
- Laboratory of Industrial Chemistry, Ruhr University Bochum, 44780 Bochum, Germany
- Max Planck Institute for Chemical Energy Conversion, 45470 Mülheim an der Ruhr, Germany
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7
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Dynamics of Reactive Oxygen Species on Cobalt-Containing Spinel Oxides in Cyclic CO Oxidation. Catalysts 2021. [DOI: 10.3390/catal11111312] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Reactive oxygen species (ROS) are considered to be responsible for the high catalytic activity of transition metal oxides like Co3-xFexO4 in oxidation reactions, but the detailed influences of catalyst composition and morphology on the formation of these reactive oxygen species are not fully understood. In the presented study, Co3O4 spinels of different mesostructures, i.e., particle size, crystallinity, and specific surface area, are characterized by powder X-ray diffraction, scanning electron microscopy, and physisorption. The materials were tested in CO oxidation performed in consecutive runs and compared to a Co3-xFexO4 composition series with a similar mesostructure to study the effects of catalyst morphology and composition on ROS formation. In the first run, the CO conversion was observed to be dominated by the exposed surface area for the pure Co-spinels, while a negative effect of Fe content in the spinels was seen. In the following oxidation run, a U-shaped conversion curve was observed for materials with high surface area, which indicated the in situ formation of ROS on those materials that were responsible for the new activity at low temperature. This activation was not stable at the higher reaction temperature but was confirmed after temperature-programmed oxidation (TPO). However, no activation after the first run was observed for low-surface-area and highly crystalline materials, and the lowest surface-area material was not even activated after TPO. Among the catalyst series studied here, a correlation of small particle size and large surface area with the ability for ROS formation is presented, and the benefit of a nanoscaled catalyst is discussed. Despite the generally negative effect of Fe, the highest relative activation was observed at intermediate Fe contents suggesting that Fe may be involved in ROS formation.
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8
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Falk T, Budiyanto E, Dreyer M, Pflieger C, Waffel D, Büker J, Weidenthaler C, Ortega KF, Behrens M, Tüysüz H, Muhler M, Peng B. Identification of Active Sites in the Catalytic Oxidation of 2‐Propanol over Co
1+x
Fe
2–x
O
4
Spinel Oxides at Solid/Liquid and Solid/Gas Interfaces. ChemCatChem 2021. [DOI: 10.1002/cctc.202100352] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Tobias Falk
- Laboratory of Industrial Chemistry Ruhr University Bochum 44780 Bochum Germany
| | - Eko Budiyanto
- Max-Planck-Institut für Kohlenforschung 45470 Mülheim an der Ruhr Germany
| | - Maik Dreyer
- University of Duisburg-Essen 47057 Duisburg Germany
| | - Christin Pflieger
- Laboratory of Industrial Chemistry Ruhr University Bochum 44780 Bochum Germany
| | - Daniel Waffel
- Laboratory of Industrial Chemistry Ruhr University Bochum 44780 Bochum Germany
| | - Julia Büker
- Laboratory of Industrial Chemistry Ruhr University Bochum 44780 Bochum Germany
| | | | - Klaus Friedel Ortega
- Institute of Inorganic Chemistry Christian-Albrechts-Universität zu Kiel 24118 Kiel Germany
| | - Malte Behrens
- Institute of Inorganic Chemistry Christian-Albrechts-Universität zu Kiel 24118 Kiel Germany
| | - Harun Tüysüz
- Max-Planck-Institut für Kohlenforschung 45470 Mülheim an der Ruhr Germany
| | - Martin Muhler
- Laboratory of Industrial Chemistry Ruhr University Bochum 44780 Bochum Germany
- Max Planck Institute for Chemical Energy Conversion 45470 Mülheim an der Ruhr Germany
| | - Baoxiang Peng
- Laboratory of Industrial Chemistry Ruhr University Bochum 44780 Bochum Germany
- Max Planck Institute for Chemical Energy Conversion 45470 Mülheim an der Ruhr Germany
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