Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 58, Issue 35, Pages 12175-12179Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201907074
Keywords
defects; hydrogen production; metal-organic frameworks; photocatalysis; transient absorption
Categories
Funding
- 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]
Ask authors/readers for more resources
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.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available