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Kamyabi MA, Jadali S, Sharifi Khangheshlaghi L, Hashemi Heris MK. A high-performance Pt-based catalyst for the methanol oxidation reaction: effect of electrodeposition mode and cocatalyst on electrocatalytic activity. NEW J CHEM 2023. [DOI: 10.1039/d2nj05164h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The influence of supporting material, cocatalyst, and electrodeposition mode on MOR activity.
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Affiliation(s)
- Mohammad Ali Kamyabi
- Electroanalytical Chemistry Laboratory, Department of Chemistry, Faculty of Science, University of Zanjan, Postal Code 45371-38791, Zanjan, Iran
| | - Salma Jadali
- Electroanalytical Chemistry Laboratory, Department of Chemistry, Faculty of Science, University of Zanjan, Postal Code 45371-38791, Zanjan, Iran
| | - Leila Sharifi Khangheshlaghi
- Electroanalytical Chemistry Laboratory, Department of Chemistry, Faculty of Science, University of Zanjan, Postal Code 45371-38791, Zanjan, Iran
| | - Mir Karim Hashemi Heris
- Electroanalytical Chemistry Laboratory, Department of Chemistry, Faculty of Science, University of Zanjan, Postal Code 45371-38791, Zanjan, Iran
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Zhu Q, Wang Z, Xu Z, Wang Y, Yin Q, Zhang K. Synthesis and characterization of polydopamine‐derived carbon materials with enhanced thermoelectric performance. J Appl Polym Sci 2022. [DOI: 10.1002/app.53479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Affiliation(s)
- Qi Zhu
- Institute for Advanced Study Chengdu University Chengdu China
| | - Zhijun Wang
- Institute for Advanced Study Chengdu University Chengdu China
| | - Ziheng Xu
- Key Laboratory of Radiation Physics and Technology of the Ministry of Education, Institute of Nuclear Science and Technology Sichuan University Chengdu China
| | - Yihan Wang
- Key Laboratory of Radiation Physics and Technology of the Ministry of Education, Institute of Nuclear Science and Technology Sichuan University Chengdu China
| | - Qinjian Yin
- College of Chemistry Sichuan University Chengdu China
| | - Kun Zhang
- Key Laboratory of Radiation Physics and Technology of the Ministry of Education, Institute of Nuclear Science and Technology Sichuan University Chengdu China
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Abstract
Pt is widely used as the catalyst for methanol oxidation reaction (MOR) in direct methanol fuel cells (DMFC). However, the high cost and limited supply of pure Pt limit the commercialization of DMFC. Herein, MOR catalyzed by variously designed Pd-doped PtmPdn was studied with the density functional theory (DFT); the PtmPdn(111) surface was chosen since it is the most stable surface among various low-index surfaces. The hydrogens in methyl groups were priorly dehydrogenated on Pt(111), followed by hydrogen in the hydroxyl group. The effects of both the ratio of Pt:Pd and the type of the alloy on the activity of PtmPdn catalysts toward MOR were also studied; both ordered and disordered PtPd with the 1:1 ratio had better catalytic activity towards MOR than other catalysts. Specifically, the disordered Pt:Pdd with the Pt:Pd ratio of 1:1 had the best activity for the relatively stronger adsorption of COH, but the lowest binding with CO and a moderate d band center. The adsorptions of both COH and CO are key steps in the MOR, since the steps of CH3OH→CH2OH→CHOH→COH have downhill energy profiles, while COH→CO is an uphill reaction. In addition, the d band centers of the surface atoms move towards the Fermi level with the increase of the Pd content; the d band can also be tuned by changing the atom arrangement. These findings can be used as rules to design high-performance catalysts for MOR.
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Barman SC, Zahed MA, Sharifuzzaman M, Kim J, Xuan X, Nah JS, Park S, Park JY. Carbon‐Free Nanocoral‐Structured Platinum Electrocatalyst for Enhanced Methanol Oxidation Reaction Activity with Superior Poison Tolerance. ChemElectroChem 2020. [DOI: 10.1002/celc.201901988] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Sharat Chandra Barman
- Department of Electronic Engineering Micro/Nano Devices & Packaging LabKwangwoon University 447-1 Seoul Republic of Korea
| | - Md. Abu Zahed
- Department of Electronic Engineering Micro/Nano Devices & Packaging LabKwangwoon University 447-1 Seoul Republic of Korea
| | - Md. Sharifuzzaman
- Department of Electronic Engineering Micro/Nano Devices & Packaging LabKwangwoon University 447-1 Seoul Republic of Korea
| | - Jiyoung Kim
- Department of Electronic Engineering Micro/Nano Devices & Packaging LabKwangwoon University 447-1 Seoul Republic of Korea
| | - Xing Xuan
- Department of Electronic Engineering Micro/Nano Devices & Packaging LabKwangwoon University 447-1 Seoul Republic of Korea
| | - Joong San Nah
- Department of Electronic Engineering Micro/Nano Devices & Packaging LabKwangwoon University 447-1 Seoul Republic of Korea
| | - Sehkyu Park
- Department of Chemical EngineeringKwangwoon University 447-1 Seoul Republic of Korea
| | - Jae Yeong Park
- Department of Electronic Engineering Micro/Nano Devices & Packaging LabKwangwoon University 447-1 Seoul Republic of Korea
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