Gray Ta2O5 Nanowires with Greatly Enhanced Photocatalytic Performance

Guilian Zhu, Tianquan Lin, Houlei Cui, Wenli Zhao, Hui Zhang*, Fuqiang Huang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

67 Scopus citations

Abstract

Black TiO2, with enhanced solar absorption and photocatalytic activity, has gained extensive attention, inspiring us to investigate the reduction of other wide-bandgap semiconductors for improved performance. Herein, we report the preparation of gray Ta2O5 nanowires with disordered shells and abundant defects via aluminum reduction. Its water decontamination is 2.5 times faster and hydrogen production is 2.3-fold higher over pristine Ta2O5. The reduced Ta2O5 also delivers significantly enhanced photoelectrochemical performance compared with the pristine Ta2O5 nanowires, including much higher carrier concentration, easier electron-hole separation and 11 times larger photocurrent. Our results demonstrate that Ta2O5 will have great potentials in photocatalysis and solar energy utilization after proper modification.

Original languageEnglish (US)
Pages (from-to)122-127
Number of pages6
JournalACS Applied Materials and Interfaces
Volume8
Issue number1
DOIs
StatePublished - Jan 13 2016

Keywords

  • aluminum reduction
  • nanowire
  • PEC
  • photocatalysis
  • TaO

ASJC Scopus subject areas

  • General Materials Science

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