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Li S, Ma Y, Li Y. Strain engineering of PtMn alloy enclosed by high-indexed facets boost ethanol electrooxidation. J Colloid Interface Sci 2024; 677:416-424. [PMID: 39096709 DOI: 10.1016/j.jcis.2024.07.254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2024] [Revised: 07/25/2024] [Accepted: 07/30/2024] [Indexed: 08/05/2024]
Abstract
Surface strain engineering has proven to be an efficient strategy to enhance catalytic properties of platinum (Pt)-based catalysts for electrooxidation reactions. Herein, the S-doped PtMn concave cubes (CNCs) enclosed with high index facets (HIFs) and regulatable surface strain are successfully fabricated by two steps hydrothermal method. The S element with electrophilic property can modify the near-surface of PtMn nanocrystals, altering the electronic structure of Pt to effectively regulate the adsorption/desorption of intermediates in the ethanol electrooxidation reaction (EOR). The PtMnS1.1 catalyst with optimal surface strain delivered extraordinary catalytic performance on EOR in acidic media, with a specific activity of 2.88 mA/cm2 and mass activity of 1.10 mA/μgPt, which is 4.1 and 2.2 times larger than that of state-of-the-art Pt/C catalyst, respectively. Additionally, the PtMnS1.1 catalyst also achieve excellent catalytic properties in alkaline electrolyte for EOR. The results of kinetic studies indicated that the surface strain and modified electronic structure can degrade the activation energy barrier during the process of EOR, which is beneficial for enhance the reaction rate. This work provides a promising approach to construct highly efficient electrocatalysts with tunable surface strain effects for clean energy electro-chemical reactions.
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Affiliation(s)
- Shuna Li
- School of Chemistry, Chemical Engineering, and Materials, Jining University, Qufu, Shandong 273155, China
| | - Yanyun Ma
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory of Advanced Negative Carbon Technologies, Soochow University, Suzhou, Jiangsu 215123, China
| | - Yunrui Li
- Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.
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Lu Y, Liang L, Ye S, Chen Z, Zhao W, Cui Z. Pt 3Sn 0.5Mn 0.5 Intermetallic Electrocatalyst with Superior Stability for CO-Resilient Methanol Oxidation. ACS APPLIED MATERIALS & INTERFACES 2024; 16:35134-35142. [PMID: 38940277 DOI: 10.1021/acsami.4c05906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/29/2024]
Abstract
The sluggish kinetics of methanol oxidation reaction (MOR) and poor long-term durability of catalysts are the main restrictions of the large-scale applications of direct methanol fuel cells (DMFCs). Herein, we demonstrated an inspirational ternary Pt3Sn0.5Mn0.5/DMC intermetallic catalyst that reached 4.78 mA cm-2 and 2.39 A mg-1Pt for methanol oxidation, which were 2.50/2.44 and 5.62/5.31 times that of commercial PtRu/C and Pt/C. After the durability test, Pt3Sn0.5Mn0.5/DMC presented a very low current density attenuation (38.5%), which was significantly lower than those for commercial PtRu/C catalyst (84.2%) and Pt/C (93.1%). Density functional theory (DFT) calculations revealed that the coregulation of Sn and Mn altered the surface electronic structure and endowed Pt3Sn0.5Mn0.5 with selective adsorption of Pt for CO and Sn for OH, which optimized the adsorption strength for intermediates and improved the reaction kinetics of MOR. Beyond offering an advanced electrocatalyst, this study provided a new point of view for the rational design of superior methanol oxidation catalysts for DMFC.
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Affiliation(s)
- Yongmei Lu
- Guizhou University Key Laboratory of Green Chemical and Clean Energy Technology, Guizhou University Engineering Research Center of Efficient Utilization for Industrial Waste, School of Chemistry and Chemical Engineering, Guizhou University, Guiyang, Guizhou 550025, PR China
| | - Lecheng Liang
- The Key Laboratory of Fuel Cell Technology of Guangdong Province, The Key Laboratory of New Energy Technology of Guangdong Universities, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, Guangdong 510641, PR China
| | - Shao Ye
- The Key Laboratory of Fuel Cell Technology of Guangdong Province, The Key Laboratory of New Energy Technology of Guangdong Universities, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, Guangdong 510641, PR China
| | - Zheng Chen
- Guizhou University Key Laboratory of Green Chemical and Clean Energy Technology, Guizhou University Engineering Research Center of Efficient Utilization for Industrial Waste, School of Chemistry and Chemical Engineering, Guizhou University, Guiyang, Guizhou 550025, PR China
| | - Weiyue Zhao
- Guizhou University Key Laboratory of Green Chemical and Clean Energy Technology, Guizhou University Engineering Research Center of Efficient Utilization for Industrial Waste, School of Chemistry and Chemical Engineering, Guizhou University, Guiyang, Guizhou 550025, PR China
| | - Zhiming Cui
- The Key Laboratory of Fuel Cell Technology of Guangdong Province, The Key Laboratory of New Energy Technology of Guangdong Universities, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, Guangdong 510641, PR China
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Zhao Z, Zhang L, Ma X, Min Y, Xu Q, Li Q. Pd3Pb1@Pt2 core–shell concave nanocubes to boost the ethanol oxidation reaction. Electrochim Acta 2023. [DOI: 10.1016/j.electacta.2023.141866] [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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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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Fan F, Chen DH, Yang L, Qi J, Fan Y, Wang Y, Chen W. PtCuFe alloy nanochains: Synthesis and composition-performance relationship in methanol oxidation and hydrogen evolution reactions. J Colloid Interface Sci 2022; 628:153-161. [PMID: 35987154 DOI: 10.1016/j.jcis.2022.08.032] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 08/02/2022] [Accepted: 08/05/2022] [Indexed: 11/19/2022]
Abstract
The controllable synthesis of 1-dimensional (1D) multi-metal Pt-based alloys, with enhanced electro-chemical properties remains a challenge, despite the wide application of Pt-based catalysts in fuel cells and in the hydrogen evolution reaction (HER). Herein, we fabricate PtCuFe alloy nanochains (NCs) that have a tunable composition by flexibly adjusting the molar ratios of the metal precursors. It was found that Cu2+ is key in the formation of 1D NCs, as confirmed by transmission electron microscopy characterizations. In addition, the alloyed Fe can further increase the content of the metallic state of Cu in the PtCuFe NCs. The as-prepared PtCuFe NCs exhibited higher catalytic activity and stability than those of the Pt nanoparticles (NPs), PtFe NPs, and PtCu NCs, for the methanol oxidation reaction (MOR) and HER. Additionally, the composition-performance relationship of PtCuxFey NCs toward the MOR and HER were investigated. The hybrid density functional theory calculation and analysis showed that the 1D PtCuFe NCs have a lower lowest unoccupied molecular orbital (LUMO) than those of the 2- and 3-dimensional PtCuFe, verifying that the 1D PtCuFe NCs exhibit the highest activity for the MOR. This work has established a new method for the controllable synthesis of multi-metal Pt-based NCs/alloy catalysts and their subsequent applications in other electro-catalytic reactions.
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Affiliation(s)
- Fangfang Fan
- Guangxi Key Laboratory of Low Carbon Energy Materials, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Du-Hong Chen
- Guangxi Key Laboratory of Low Carbon Energy Materials, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Linjuan Yang
- Guangxi Key Laboratory of Low Carbon Energy Materials, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Jiuhui Qi
- Guangxi Key Laboratory of Low Carbon Energy Materials, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Youjun Fan
- Guangxi Key Laboratory of Low Carbon Energy Materials, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China.
| | - Yixuan Wang
- Department of Chemistry and Forensic Science, Albany State University, Albany, GA 31705, USA.
| | - Wei Chen
- Guangxi Key Laboratory of Low Carbon Energy Materials, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China.
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