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A Novel and Reusable RGO/ZnO with Nanosheets/Microparticle Composite Photocatalysts for Efficient Pollutants Degradation
Author(s) -
Zhao Dawei,
Zhou Yi,
Deng Yuehong,
Xiang Ye,
Zhang Ya,
Zhao Zhen,
Zeng Dandan
Publication year - 2018
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201801609
Subject(s) - materials science , photodegradation , photocatalysis , graphene , reusability , composite number , hydrothermal circulation , chemical engineering , degradation (telecommunications) , specific surface area , nanotechnology , semiconductor , catalysis , composite material , optoelectronics , chemistry , computer science , software , telecommunications , biochemistry , engineering , programming language
In this paper, we designed and synthesized a novel structure ZnO with the nanosheets grown on the surface of dumbbell‐shape ZnO via a simple hydrothermal route, and exhibits excellent photoelectrochemical performance. The reason is that nanosheets enhance charge generation, separation and transfer. Graphene as a co‐catalyst and anti‐photocorrosion material were coated on the surface of ZnO and further enhanced the photoelectrochemical properties. In process of photodegradation RhB, the experiments reveal that ZnO with 1.5 wt% RGO displayed highest rate constant of 0.0562 min −1 , which is about 4 times better than pristine ZnO (heating 9 h) and several times higher than other RGO/ZnO composites. Meanwhile, the recycle experiments of 1.5 wt% RGO/ZnO suggest that it has excellent stability, reusability and excellent photocatalytic activity. The work provides a new strategy that developing nanosheets with high‐energy plane grown on the surface of semiconductor particles to enhance photoelectrochemical performance and reusability.