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Shape and structural effects of R5-templated Pd nanomaterials as potent catalyst for oxygen electroreduction in alkaline media

Authors
  • Yang, Hongyu1
  • Wen, Chengwei2
  • Tang, Zhenghua1, 3
  • Wang, Likai1
  • Wang, Qiannan1
  • Yan, Wei1
  • Wu, Wen1
  • Chen, Shaowei1, 4
  • 1 Guangzhou Higher Education Mega Centre, Guangzhou Key Laboratory for Surface Chemistry of Energy Materials, New Energy Research Institute, School of Environment and Energy, South China University of Technology, Guangzhou, 510006, China , Guangzhou (China)
  • 2 Institute of Nuclear Physics and Chemistry, CAEP, Mianyang, Sichuan, 621900, China , Mianyang (China)
  • 3 Guangzhou Higher Education Mega Centre, Guangdong Provincial Key Laboratory of Atmospheric Environment and Pollution Control, Guangdong Provincial Engineering and Technology Research Center for Environmental Risk Prevention and Emergency Disposal, South China University of Technology, Guangzhou, 510006, China , Guangzhou (China)
  • 4 University of California, Department of Chemistry and Biochemistry, 1156 High Street, Santa Cruz, CA, 95064, USA , Santa Cruz (United States)
Type
Published Article
Journal
Journal of Materials Science
Publisher
Springer-Verlag
Publication Date
Mar 20, 2017
Volume
52
Issue
13
Pages
8016–8026
Identifiers
DOI: 10.1007/s10853-017-1004-y
Source
Springer Nature
Keywords
License
Yellow

Abstract

Bio-inspired metal nanomaterials are receiving increasing research attentions in catalytic field recently, while peptide-based method represents new revenues to fabricate stable and reactive catalyst under mild and environmental friendly conditions. Among all kinds of noble metals, peptide-based palladium nanomaterials have demonstrated excellent catalytic capabilities in a variety of organic reactions. However, their electrocatalytic properties have not been systematically studied. Herein, R5-templated Pd nanomaterials have been fabricated and employed as potent catalysts for oxygen reduction reaction (ORR). The shape and morphology of these Pd nanomaterials were manipulated by tuning the metal-to-R5 ratio. The as-prepared Pd nanomaterials demonstrated excellent ORR activity in alkaline media. R5-Pd-90 exhibited the best activity which is superior than commercial Pt/C, in terms of onset potential, diffusion-limited current density as well as long-term stability. The correlation between the shape and/or morphology of the peptide-templated Pd nanomaterials and their ORR activity has been successfully established.

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