Vacancy engineering of TiO<sub>2</sub> with low Pt content for efficient hydrogen generation
Titanium dioxide (TiO<sub>2</sub>) 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 TiO<sub>2</sub> with low load Pt (Pt/TiO<sub>2</sub>) for the HER. The created oxygen vacancies facilitate electron transfer and enhance the metal-support interactions. Furthermore, the prepared Pt/TiO<sub>2</sub> shows satisfactory catalytic performance in 0.5 M H<sub>2</sub>SO<sub>4</sub>, with 11 mV to reach 10 mA cm<sup>-2</sup> and a small Tafel slope (24.1 mV dec<sup>-1</sup>). Moreover, the catalyst's mass activity is ten or more times larger than that of Pt/C, and the turnover frequency of Pt/TiO<sub>2</sub> 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.
Authors
- Liantao Xin
- Weiping Xiao (ORCID: https://orcid.org/0000-0002-3337-1807)
- Dehong Chen (ORCID: https://orcid.org/0000-0003-2867-7155)
- Zexing Wu (ORCID: https://orcid.org/0000-0002-9059-8688)
- Jianyang Gao
- Lei Wang (ORCID: https://orcid.org/0000-0001-7275-4846)
- Guangrui Xu (ORCID: https://orcid.org/0000-0003-1593-532X)
- Fusheng Liu
- Yuanzong Shen
- Jinxiao Gao
Institutions
- Qingdao University of Science and Technology (CN)
- Nanjing Forestry University (CN)
Publication Details
- Journal
- Chemical Communications
- Published
- 2025-01-01
- DOI
- https://doi.org/10.1039/d5cc02554k
- Citations
- 1
- Primary Topic
- Electrocatalysts for Energy Conversion
- Type
- article
- Field-Weighted Citation Impact
- 0.36
Funders
- National Natural Science Foundation of China