Solar light driven pure water splitting on quantum sized BiVO4 without any cocatalyst

Songmei Sun, Wenzhong Wang, Dezhi Li, Ling Zhang, Dong Jiang

Research output: Contribution to journalArticle

135 Citations (Scopus)

Abstract

Photocatalytic water splitting is the most promising process to convert solar energy into high purity chemical fuel (hydrogen), which has received significant attention in recent years. Only several photocatalysts have been reported in the literature for pure water splitting under visible light. Herein we report for the first time quantum sized BiVO4 can decompose pure water into H2 and O2 simultaneously under simulated solar light irradiation without any cocatalysts or sacrificial reagents. By electrochemical measurement, we demonstrate that the significantly different photocatalytic activity of the quantum sized BiVO4 arises from the negative shift of conduction band edge by a quantum confinement effect and a decreased overpotential for water reduction. Although the generated H2 and O2 are nonstoichiometric in the present study, these findings establish the great potential of using quantum sized BiVO4 photocatalyst and solar energy for overall water splitting.

Original languageEnglish
Pages (from-to)3498-3503
Number of pages6
JournalACS Catalysis
Volume4
Issue number10
DOIs
Publication statusPublished - Oct 3 2014

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)

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