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Surface modification of BiVO4 with TiO2 (001) and Ti3C2 MXene to enhance photoelectrochemical water oxidation

  • Ilham Aksan Maulana
  • , Yoga Romdoni
  • , Yusalma Rizqi Wibowo
  • , Angga Hermawan
  • , Aminah Umar
  • , Ferry Anggoro Ardy Nugroho
  • , Mohamed Kheireddine Aroua
  • , Fatwa Firdaus Abdi
  • , Munawar Khalil*
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

The common photoanode for PEC, BiVO4, exhibits inefficient charge transport. A novel composite photoanode, BiVO4/TiO2 (001)/Ti3C2 MXene, was fabricated by thin-coating TiO2 (001) and Ti3C2 MXene flakes onto BiVO4 films. The addition of Ti3C2 MXene thin flakes onto BiVO4/TiO2 and BiVO4/TiO2 (001) films significantly increases the photocurrent density 67% and 82% to approximately 1.5 and 2 mA.cm-2, respectively (at 1.23 VRHE under 1.5G AM illumination). Besides, the photocurrent density of the TiO2 (001)-based photoanode surpasses that of the TiO2-based photoanode. This is attributed to the high density of unsaturated coordination sites on (001) facets, which act as efficient electron acceptors and provide abundant active sites for water oxidation. The combination of TiO2 (001) and Ti3C2 MXene enhances PEC water oxidation reaction performance by serving as a co-catalyst, improving charge-transfer of photogenerated carriers and reducing charge recombination of BiVO4. This ternary heterostructure represents a promising strategy for effective PEC water oxidation.

Original languageEnglish
Article number114043
JournalMaterials Research Bulletin
Volume199
DOIs
StatePublished - Jun 2026

Bibliographical note

Publisher Copyright:
© 2026

Keywords

  • Bismuth vanadate
  • Photoanode
  • Photoelectrochemical
  • TiC MXene
  • TiO (001)
  • Water oxidation

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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