期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 58, 期 35, 页码 12175-12179出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201907074
关键词
defects; hydrogen production; metal-organic frameworks; photocatalysis; transient absorption
资金
- NSFC [21725101, 21673213, 21871244, 21521001, 21573211, 21633007]
- MOST [2016YFA0200602, 2018YFA0208702]
- Fujian Institute of Innovation (Chinese Academy of Sciences)
- Anhui Initiative in Quantum Information Technologies [AHY090200]
Defect engineering is a versatile approach to modulate band and electronic structures as well as materials performance. Herein, metal-organic frameworks (MOFs) featuring controlled structural defects, namely UiO-66-NH2-X (X represents the molar equivalents of the modulator, acetic acid, with respect to the linker in synthesis), were synthesized to systematically investigate the effect of structural defects on photocatalytic properties. Remarkably, structural defects in MOFs are able to switch on the photocatalysis. The photocatalytic H-2 production rate presents a volcano-type trend with increasing structural defects, where Pt@UiO-66-NH2-100 exhibits the highest activity. Ultrafast transient absorption spectroscopy unveils that UiO-66-NH2-100 with moderate structural defects possesses the fastest relaxation kinetics and the highest charge separation efficiency, while excessive defects retard the relaxation and reduce charge separation efficiency.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据