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Nitrogen-Doped Carbon Nanotube-Supported Pd Catalyst for Improved Electrocatalytic Performance toward Ethanol Electrooxidation

Authors
  • Wei, Ying1
  • Zhang, Xinyuan1
  • Luo, Zhiyong2
  • Tang, Dian1
  • Chen, Changxin3
  • Zhang, Teng1
  • Xie, Zailai2
  • 1 Fuzhou University, College of Materials Science and Engineering, Fuzhou, Fujian, 350108, People’s Republic of China , Fuzhou (China)
  • 2 Fuzhou University, College of Chemistry, Fuzhou, Fujian, 350108, People’s Republic of China , Fuzhou (China)
  • 3 Shanghai Jiao Tong University, Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering, Shanghai, 200240, People’s Republic of China , Shanghai (China)
Type
Published Article
Journal
Nano-Micro Letters
Publisher
Springer Berlin Heidelberg
Publication Date
Feb 14, 2017
Volume
9
Issue
3
Identifiers
DOI: 10.1007/s40820-017-0129-5
Source
Springer Nature
Keywords
License
Green

Abstract

In this study, hydrothermal carbonization (HTC) was applied for surface functionalization of carbon nanotubes (CNTs) in the presence of glucose and urea. The HTC process allowed the deposition of thin nitrogen-doped carbon layers on the surface of the CNTs. By controlling the ratio of glucose to urea, nitrogen contents of up to 1.7 wt% were achieved. The nitrogen-doped carbon nanotube-supported Pd catalysts exhibited superior electrochemical activity for ethanol oxidation relative to the pristine CNTs. Importantly, a 1.5-fold increase in the specific activity was observed for the Pd/HTC-N1.67%CNTs relative to the catalyst without nitrogen doping (Pd/HTC-CNTs). Further experiments indicated that the introduction of nitrogen species on the surface of the CNTs improved the Pd(0) loading and increased the binding energy.

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