Wide-bandgap HfO2-V2O5 nanowires heterostructure for visible light-driven photocatalytic degradation

Fitri Nur Indah Sari, Sang Hsuan Lu, Jyh Ming Ting

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

A novel HfO2/V2O5 nanocomposite has been fabricated for use as photocatalyst. HfO2 nanoparticles (NPs) were deposited on V2O5 using a precipitation method. Both commercial V2O5 particles and microwave-assisted hydrothermal (MAH)-synthesized V2O5 nanowires (NWs) were used. We demonstrate that the HfO2/V2O5 nanocomposite exhibits better photodegradation efficiency than the V2O5. The photodegradation reaction constant of the HfO2/V2O5 nanocomposite is more than 66% higher than that of the V2O5. The wide-bandgap, transparent HfO2 effectively reduces the electron-hole recombination by proving defect levels to quench the recombination. A plausible band structure is proposed to support the existence of these defect levels.

Original languageEnglish
Pages (from-to)2252-2261
Number of pages10
JournalJournal of the American Ceramic Society
Volume103
Issue number3
DOIs
Publication statusPublished - 2020 Mar 1

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

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