期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 45, 期 43, 页码 22893-22905出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2020.06.164
关键词
Trimetallic nanocatalyst; Formic acid oxidation; Methanol oxidation; Fuel cells
资金
- National Natural Science Foundation of China [21763011]
- Natural Science Foundation of Jiangxi Province for Distinguished Young Scholars [20192BCB23015]
- Youth Jinggang Scholars Program in Jiangxi Province [[2019]57]
- China Postdoctoral Science Foundation [2018M642597]
- Foundation of State Key Laboratory of Coal Conversion [J20-21-609]
- Research Foundation of the Education Bureau of Jiangxi Province of China [GJJ190429]
- Postdoctoral Science Foundation of Jiangxi Province of China
- Program of Qingjiang Excellent Young Talents, Jiangxi University of Science and Technology [JXUSTQJBJ2019002]
- Program of Technology Innovation Talents of Ganzhou
We provide a simple method to design and prepare a highly efficient Pt10.9Au0.2Ni88.9/C trimetallic nanocatalyst with a novel nanostructure of ultra-low (0.075 wt%) Au decorated PtNi alloy nanoparticles for methanol oxidation (MOR) and formic acid oxidation (FAOR). The electro-catalytic properties of Pt10.9Au0.2Ni88.9/C toward the MOR and FAOR are much more excellent than Pt-11.1/Ni-88.9/C, Au-11.1/Ni-88.9/C and commercial Pt/C, which is attributable to the synergy effect among Pt, Au, and Ni (electron charge donor effect of Au and Ni to Pt). It has transformed the surface electronic structure of Pt atoms. Moreover, Ni triggers the rearrange towards Pt and Au atoms, it could maximize the use of noble metals. The gold atoms decorated on the surface are conducive to the formation of OH a d s as well as to weaken the adsorption of COads at platinum active sites. The Pt10.9Au0.2Ni88.9/C catalyst also exhibits outstanding stability during the MOR and FAOR. A series of characterization techniques are adopted to reveal the nanostructures, electronic, and surficial active sites properties of Pt10.9Au0.2Ni88.9/C. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
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