Vacancy engineering of TiO2 with low Pt content for efficient hydrogen generation

Abstract

Titanium dioxide (TiO2) supported with low content precious metals is a crucial strategy for attaining optimal performance in the hydrogen evolution reaction (HER), but the synthesis route is usually energy-consuming and complicated. In this work, an ultra-fast (70 s) and simple microwave strategy is proposed to prepare black TiO2 with low load Pt (Pt/TiO2) for the HER. The created oxygen vacancies facilitate electron transfer and enhance the metal–support interactions. Furthermore, the prepared Pt/TiO2 shows satisfactory catalytic performance in 0.5 M H2SO4, with 11 mV to reach 10 mA cm−2 and a small Tafel slope (24.1 mV dec−1). Moreover, the catalyst's mass activity is ten or more times larger than that of Pt/C, and the turnover frequency of Pt/TiO2 also far exceeds that of Pt/C. This work supplies a promising strategy for designing regulated metal oxide supports with trace noble metals for energy conversion and storage.

Graphical abstract: Vacancy engineering of TiO2 with low Pt content for efficient hydrogen generation

Supplementary files

Article information

Article type
Communication
Submitted
07 May 2025
Accepted
16 Jun 2025
First published
26 Jun 2025

Chem. Commun., 2025, Advance Article

Vacancy engineering of TiO2 with low Pt content for efficient hydrogen generation

J. Gao, Y. Shen, J. Gao, L. Xin, W. Xiao, G. Xu, D. Chen, L. Wang, F. Liu and Z. Wu, Chem. Commun., 2025, Advance Article , DOI: 10.1039/D5CC02554K

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