Black TiO2 for solar hydrogen conversion

Bin Wang, Shaohua Shen, Samuel S. Mao

Research output: Contribution to journalReview articlepeer-review

121 Scopus citations

Abstract

Titanium dioxide (TiO2) has been widely investigated for photocatalytic H2 evolution and photoelectrochemical (PEC) water splitting since 1972. However, its wide bandgap (3.0–3.2 eV) limits the optical absorption of TiO2 for sufficient utilization of solar energy. Blackening TiO2 has been proposed as an effective strategy to enhance its solar absorption and thus the photocatalytic and PEC activities, and aroused widespread research interest. In this article, we reviewed the recent progress of black TiO2 for photocatalytic H2 evolution and PEC water splitting, along with detailed introduction to its unique structural features, optical property, charge carrier transfer property and related theoretical calculations. As summarized in this review article, black TiO2 could be a promising candidate for photoelectrocatalytic hydrogen generation via water splitting, and continuous efforts are deserved for improving its solar hydrogen efficiency.

Original languageBritish English
Pages (from-to)96-111
Number of pages16
JournalJournal of Materiomics
Volume3
Issue number2
DOIs
StatePublished - 1 Jun 2017

Keywords

  • Black TiO
  • Hydrogen evolution
  • Photocatalytic
  • Photoelectrochemical water splitting

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