Bismuth vanadate with electrostatically anchored 3D carbon nitride nano-networks as efficient photoanodes for water oxidation

Peng Luan, Ying Zhang, Xiaolong Zhang, Zhijun Li, Ragesh Prathapan, Udo Bach, Jie Zhang

Research output: Contribution to journalArticleResearchpeer-review

13 Citations (Scopus)

Abstract

In this study, we report a photoanode consisting of a polymeric/inorganic nanojunction between novel nanostructured 3D C 3 N 4 nano-networks and BiVO 4 substrate. This nanojunction is formed such that 3D C 3 N 4 nano-networks with a positively charged surface are efficiently anchored on the BiVO 4 photoanode with a negatively charged surface. This electrostatic self-assembly can initiate and contribute to an intimate contact at the interfaces, leading to an enhanced photoelectrochemical activity and stability compared with that fabricated by non-electrostatic assembly. The C 3 N 4 nano-network/BiVO 4 photoanode achieved a remarkable photocurrent density of 4.87 mA cm −2 for water oxidation at 1.23 V (vs. reversible hydrogen electrode) after depositing FeOOH/NiOOH as oxygen-evolution co-catalyst, which is among the highest photocurrent densities reported so far for BiVO 4 -based photoanodes.

Original languageEnglish
Pages (from-to)2510-2516
Number of pages7
JournalChemSusChem
Volume11
Issue number15
DOIs
Publication statusPublished - 9 Aug 2018

Keywords

  • 3D networks
  • graphitic carbon nitride
  • photo-electrochemistry
  • self-assembly
  • water oxidation

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