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Electronegativity- induced cobalt-doped platinum hollow nanospheres with high CO tolerance for efficient methanol oxidation reaction.
Yang, Hu; Li, Chang; Lü, Linzhe; Li, Zhuogen; Zhang, Shiqi; Huang, Zheng; Ma, Rui; Liu, Sisi; Ge, Ming; Zhou, Wei; Yuan, Xiaolei.
Afiliación
  • Yang H; School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China; State Key Laboratory of Physical Chemistry of Solid Surfaces, and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
  • Li C; State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, China.
  • Lü L; State Key Laboratory of Physical Chemistry of Solid Surfaces, and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
  • Li Z; State Key Laboratory of Physical Chemistry of Solid Surfaces, and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
  • Zhang S; School of Mechanical Engineering, Nantong University, Nantong 226019, China. Electronic address: 2022049@ntu.edu.cn.
  • Huang Z; State Key Laboratory of Physical Chemistry of Solid Surfaces, and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
  • Ma R; State Key Laboratory of Physical Chemistry of Solid Surfaces, and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
  • Liu S; School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China.
  • Ge M; School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China.
  • Zhou W; State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, China; Suzhou Laboratory, Suzhou 215000, China. Electronic address: zhouwei1982@njtech.edu.cn.
  • Yuan X; School of Chemistry and Chemical Engineering, Nantong University, Nantong 226019, China. Electronic address: xlyuan@ntu.edu.cn.
J Colloid Interface Sci ; 678(Pt C): 300-308, 2024 Sep 14.
Article en En | MEDLINE | ID: mdl-39298982
ABSTRACT
Although Platinum (Pt)-based alloys have garnered significant interest within the realm of direct methanol fuel cells (DMFCs), there still exists a notable dearth in the exploration of the catalytic behavior of the liquid fuels on well-defined active sites and unavoidable Pt poisoning because of the adsorbed CO species (COads). Here, we propose an electronegativity-induced electronic redistribution strategy to optimize the adsorption of crucial intermediates for the methanol oxidation reaction (MOR) by introducing the Co element to form the PtCo alloys. The optimal PtCo hollow nanospheres (HNSs) exhibit excellent high-quality activity of 3.27 A mgPt-1, which is 11.6 times and 13.1 times higher than that of Pt/C and pure Pt, respectively. The in-situ Fourier transform infrared reflection spectroscopy validates that electron redistribution could weak CO adsorption, and subsequently decrease the CO poisoning adjacent the Pt active sites. Theoretical simulations result show that the introduction of Co optimize surface electronic structure and reduce the d-band center of Pt, thus optimized the adsorption behavior of COads. This study not only employs a straightforward method for the preparation of Pt-based alloys but also delineates a pathway toward designing advanced active sites for MOR via electronegativity-induced electronic redistribution.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Colloid Interface Sci Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Estados Unidos
Texto completo
Añadir a Mi BVS
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XML
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: J Colloid Interface Sci Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Estados Unidos