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Alonso-Vante N. Parameters Affecting the Fuel Cell Reactions on Platinum Bimetallic Nanostructures. ELECTROCHEM ENERGY R 2023. [DOI: 10.1007/s41918-022-00145-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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Ejsmont A, Kadela K, Grzybek G, Darvishzad T, Słowik G, Lofek M, Goscianska J, Kotarba A, Stelmachowski P. Speciation of Oxygen Functional Groups on the Carbon Support Controls the Electrocatalytic Activity of Cobalt Oxide Nanoparticles in the Oxygen Evolution Reaction. ACS APPLIED MATERIALS & INTERFACES 2023; 15:5148-5160. [PMID: 36657620 PMCID: PMC9906611 DOI: 10.1021/acsami.2c18403] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Accepted: 01/06/2023] [Indexed: 06/17/2023]
Abstract
The effective use of the active phase is the main goal of the optimization of supported catalysts. However, carbon supports do not interact strongly with metal oxides, thus, oxidative treatment is often used to enhance the number of anchoring sites for deposited particles. In this study, we set out to investigate whether the oxidation pretreatment of mesoporous carbon allows the depositing of a higher loading and a more dispersed cobalt active phase. We used graphitic ordered mesoporous carbon obtained by a hard-template method as active phase support. To obtain different surface concentrations and speciation of oxygen functional groups, we used a low-temperature oxygen plasma. The main methods used to characterize the studied materials were X-ray photoelectron spectroscopy, transmission electron microscopy, and electrocatalytic tests in the oxygen evolution reaction. We have found that the oxidative pretreatment of mesoporous carbon influences the speciation of the deposited cobalt oxide phase. Moreover, the activity of the electrocatalysts in oxygen evolution is positively correlated with the relative content of the COO-type groups and negatively correlated with the C═O-type groups on the carbon support. Furthermore, the high relative content of COO-type groups on the carbon support is correlated with the presence of well-dispersed Co3O4 nanoparticles. The results obtained indicate that to achieve a better dispersed and thus more catalytically active material, it is more important to control the speciation of the oxygen functional groups rather than to maximize their total concentration.
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Affiliation(s)
- Aleksander Ejsmont
- Department
of Chemical Technology, Faculty of Chemistry, Adam Mickiewicz University in Poznań, Uniwersytetu Poznańskiego 8, 61-614Poznań, Poland
| | - Karolina Kadela
- Faculty
of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387Krakow, Poland
| | - Gabriela Grzybek
- Faculty
of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387Krakow, Poland
| | - Termeh Darvishzad
- Faculty
of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387Krakow, Poland
| | - Grzegorz Słowik
- Department
of Chemical Technology, Faculty of Chemistry, Maria Curie-Sklodowska University in Lublin, Maria Curie-Sklodowska Sq. 3, 20-031Lublin, Poland
| | - Magdalena Lofek
- Faculty
of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387Krakow, Poland
| | - Joanna Goscianska
- Department
of Chemical Technology, Faculty of Chemistry, Adam Mickiewicz University in Poznań, Uniwersytetu Poznańskiego 8, 61-614Poznań, Poland
| | - Andrzej Kotarba
- Faculty
of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387Krakow, Poland
| | - Paweł Stelmachowski
- Faculty
of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387Krakow, Poland
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Campos-Roldán C, Alonso-Vante N. Understanding the oxophilic effect on the hydrogen electrode reaction through PtM nanostructures. J Solid State Electrochem 2020. [DOI: 10.1007/s10008-020-04719-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Xia W, Li J, Wang T, Song L, Guo H, Gong H, Jiang C, Gao B, He J. The synergistic effect of Ceria and Co in N-doped leaf-like carbon nanosheets derived from a 2D MOF and their enhanced performance in the oxygen reduction reaction. Chem Commun (Camb) 2018; 54:1623-1626. [DOI: 10.1039/c7cc09212a] [Citation(s) in RCA: 80] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Novel two-dimensional Ceria@Co, N-doped leaf-like porous carbon nanosheets (Ce–HPCNs) and their enhanced performance in the oxygen reduction reaction.
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Affiliation(s)
- Wei Xia
- College of Materials Science and Technology
- Jiangsu Key Laboratory of Materials and Technology for Energy Conversion
- Nanjing University of Aeronautics and Astronautics
- 210016 Nanjing
- P. R. China
| | - Jingjing Li
- College of Materials Science and Technology
- Jiangsu Key Laboratory of Materials and Technology for Energy Conversion
- Nanjing University of Aeronautics and Astronautics
- 210016 Nanjing
- P. R. China
| | - Tao Wang
- College of Materials Science and Technology
- Jiangsu Key Laboratory of Materials and Technology for Energy Conversion
- Nanjing University of Aeronautics and Astronautics
- 210016 Nanjing
- P. R. China
| | - Li Song
- College of Materials Science and Technology
- Jiangsu Key Laboratory of Materials and Technology for Energy Conversion
- Nanjing University of Aeronautics and Astronautics
- 210016 Nanjing
- P. R. China
| | - Hu Guo
- College of Materials Science and Technology
- Jiangsu Key Laboratory of Materials and Technology for Energy Conversion
- Nanjing University of Aeronautics and Astronautics
- 210016 Nanjing
- P. R. China
| | - Hao Gong
- College of Materials Science and Technology
- Jiangsu Key Laboratory of Materials and Technology for Energy Conversion
- Nanjing University of Aeronautics and Astronautics
- 210016 Nanjing
- P. R. China
| | - Cheng Jiang
- College of Materials Science and Technology
- Jiangsu Key Laboratory of Materials and Technology for Energy Conversion
- Nanjing University of Aeronautics and Astronautics
- 210016 Nanjing
- P. R. China
| | - Bin Gao
- College of Materials Science and Technology
- Jiangsu Key Laboratory of Materials and Technology for Energy Conversion
- Nanjing University of Aeronautics and Astronautics
- 210016 Nanjing
- P. R. China
| | - Jianping He
- College of Materials Science and Technology
- Jiangsu Key Laboratory of Materials and Technology for Energy Conversion
- Nanjing University of Aeronautics and Astronautics
- 210016 Nanjing
- P. R. China
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Miao K, Luo Y, Zou J, Yang J, Zhang F, Huang L, Huang J, Kang X, Chen S. PdRu alloy nanoparticles of solid solution in atomic scale: outperformance towards formic acid electro-oxidation in acidic medium. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.08.167] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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