期刊
ADVANCED MATERIALS
卷 33, 期 22, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.202007368
关键词
catalyst supports; hydrogen bonding; hydrogen evolution reaction; nanoparticles; ultrathin nanosheets
类别
资金
- National Natural Science Foundation of China [21821003, 21975290, 21890380, 21901089]
- Guangdong Pearl River Talents Program [2017BT01C161]
- Foundation of Basic and Applied Basic Research of Guangdong Province [2020B1515120024]
- Jiangxi Province [20202ZDB01004, jxsq2018106041]
A new type of catalyst support using hydrogen-bonded ultrathin nanosheets was developed, demonstrating high stability and electron modulation effects. This pseudo-porous catalyst support also showed potential for application in other metal phosphides.
Behaving as structural protectors and electronic modulators, catalyst supports such as graphene derivatives are generally constructed by covalent bonds. Here, hydrogen-bonded ultrathin nanosheets are reported as a new type of catalyst support. Melamine (M) and cyanuric acid (CA) molecules self-assemble to form the graphite-like hydrogen-bonded co-crystal M-CA, which can be easily exfoliated by ultrasonic treatment to yield ultrathin nanosheets with thickness of approximate to 1.6 nm and high stability at pH = 0. The dynamic nanosheets form adaptive defects/pores in the synthetic process of CoP nanoparticles, giving embedded composite with high hydrogen evolution activity (overpotential of 66 mV at 10 mA cm(-2)) and stability. Computational calculations, X-ray photoelectron spectroscopy, and X-ray absorption spectroscopy unveil the electron modulation effects of the nanosheets. This pseudo-porous catalyst support also can be applied to other metal phosphides.
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