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Ru nanoparticles supported on partially reduced TiO2 as highly efficient catalyst for hydrogen evolution
journal contributionposted on 04.06.2021, 12:48 by Li-Na Chen, Su-Heng Wang, Peng-Yang Zhang, Zhi-Xin Chen, Xiao Lin, Hui-Juan Yang, Tian Sheng, Wen-Feng Lin, Na Tian, Shi-Gang Sun, Zhi-You Zhou
The development of low-cost yet highly efficient catalysts for hydrogen evolution reaction (HER) is crucial for large-scale clean and sustainable hydrogen production from water splitting. Tuning the interfacial structure of catalyst has emerged as an effective strategy to optimize the intrinsic catalytic activity. In this study, we demonstrated the deposition of Ru nanoparticles by freshly prepared strong reductive Ti(III) oxide, resulting in Ru/reduced TiO2 interface with oxygen vacancies. The as-prepared Ru/r-TiO2 exhibited a superior HER performance over commercial Pt/C in alkaline media, only with a small overpotential of 15 mV required to deliver the benchmark current density of 10 mA cm-2 and a high turnover frequency of 8.74 s-1 at an overpotential of 100 mV. Density functional theory calculation indicates that high electrocatalytic activity of Ru/r-TiO2 is originated from the promotion of water dissociation and weakening OH adsorption by reduced TiO2, which facilitates the conversion of water to H2. This work provides an efficient strategy for the design of high-performance HER catalysts.
National Key Research and Development Program of China (2020YFB1505804)
National Natural Science Foundation of China (21875194, 92045302, 21903001, and 22021001)
Minister of Science and Technology of China (through the high-level foreign expert program, G20190013008)
Low Cost High Performance Novel Catalysts for Direct Alcohol Alkaline Fuel Cells using anion exchange membrane and bio-fuels
Engineering and Physical Sciences Research CouncilFind out more...
Royal Society via the Newton Fund (NAF\R1\191294)
- Aeronautical, Automotive, Chemical and Materials Engineering
- Chemical Engineering