P-Induced Permeation of Nickel into WO3 Octahedra to Form a Synergistic Catalyst for Urea Oxidation**

Wenjuan Xu, Lin Zhu, Zejun Sun, Huichun Xue, Liutao Guo, Yanru Feng, Chengrui Li, Hong Li, Yiming Wang, Qionglin Liang, Hong bin Sun

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Small-molecule induction can lead to the oriented migration of metal elements, which affords functional materials with synergistic components. In this study, phosphating nickel foam (NF)-supported octahedral WO3 with phosphine affords P-WO3/NF electrocatalyst. Ni is found to form Ni−P bonds that migrate from NF to WO3 under the induction of P, resulting in the complex oxides W1.3Ni0.24O4 and Ni2P2O7 in the particle interior and nickel phosphide on the octahedral grain surface. The catalytic activity of P-WO3/NF in the urea oxidation reaction (UOR) is improved by synergistic action of the components in the synthesized hybrid particles. A current density of 10 mA cm−2 can be reached at a potential of 1.305 V, the double layer capacitance of the catalyst is significantly increased, and the electron transfer impedance in catalytic UOR is reduced. This work demonstrates that small-molecule induction is suitable for constructing co-catalysts with complex components in a simple protocol, which provides a new route for the design of highly efficient urea oxidation electrocatalysts.

Original languageEnglish (US)
Article numbere202201584
JournalChemSusChem
Volume15
Issue number24
DOIs
StatePublished - Dec 20 2022
Externally publishedYes

Keywords

  • doping
  • electrocatalysis
  • nickel phosphide
  • tungsten
  • urea oxidation

ASJC Scopus subject areas

  • Environmental Chemistry
  • General Chemical Engineering
  • General Materials Science
  • General Energy

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