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Modulating Electronic Metal-Support Interactions to Boost Visible-Light-Driven Hydrolysis of Ammonia Borane: Nickel-Platinum Nanoparticles Supported on Phosphorus-Doped Titania |
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| Authors: | Dr. Chao Wan Gui Li Jiapei Wang Prof. Lixin Xu Prof. Dang-guo Cheng Prof. Fengqiu Chen Prof. Yusuke Asakura Dr. Yunqing Kang Prof. Yusuke Yamauchi |
| Affiliation: | 1. College of Chemical and Biological Engineering, Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, Zhejiang University, 866 Yuhangtang Road, 310058 Hangzhou, China Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, 305-0044 Tsukuba, Ibaraki, Japan School of Chemistry and Chemical Engineering, Anhui University of Technology, 59 Hudong Road, 243002 Ma'anshan, China;2. School of Chemistry and Chemical Engineering, Anhui University of Technology, 59 Hudong Road, 243002 Ma'anshan, China;3. College of Chemical and Biological Engineering, Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, Zhejiang University, 866 Yuhangtang Road, 310058 Hangzhou, China;4. Department of Materials Process Engineering, Graduate School of Engineering, Nagoya University, 464-8603 Nagoya, Japan;5. Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, 305-0044 Tsukuba, Ibaraki, Japan |
| Abstract: | Ammonia borane (AB) is a promising material for chemical H2 storage owing to its high H2 density (up to 19.6 wt %). However, the development of an efficient catalyst for driving H2 evolution through AB hydrolysis remains challenging. Therefore, a visible-light-driven strategy for generating H2 through AB hydrolysis was implemented in this study using Ni−Pt nanoparticles supported on phosphorus-doped TiO2 (Ni-Pt/P-TiO2) as photocatalysts. Through surface engineering, P-TiO2 was prepared by phytic-acid-assisted phosphorization and then employed as an ideal support for immobilizing Ni−Pt nanoparticles via a facile co-reduction strategy. Under visible-light irradiation at 283 K, Ni40Pt60/P-TiO2 exhibited improved recyclability and a high turnover frequency of 967.8 mol molPt−1 min−1. Characterization experiments and density functional theory calculations indicated that the enhanced performance of Ni40Pt60/P-TiO2 originated from a combination of the Ni−Pt alloying effect, the Mott–Schottky junction at the metal-semiconductor interface, and strong metal-support interactions. These findings not only underscore the benefits of utilizing multipronged effects to construct highly active AB-hydrolyzing catalysts, but also pave a path toward designing high-performance catalysts by surface engineering to modulate the electronic metal-support interactions for other visible-light-induced reactions. |
| Keywords: | Ammonia Borane Hydrolysis Hydrogen Evolution Ni-Pt/P-TiO2 Strong Metal-Support Interactions Surface Engineering |