Enhanced water dissociation performance of graphitic-C3N4 assembled with ZnCr-layered double hydroxide

•The ZnCr-LDH/g-C3N4 composite photocatalyst is designed and prepared.•The composite exhibit excellent catalytic activity for water dissociation in the BPM.•A method for evaluating the photoelectrocatalytic performance is proposed. In this study, we have constructed ZnCr-LDH/g-C3N4 composite photoca...

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Bibliographic Details
Published in:Chemical engineering journal (Lausanne, Switzerland : 1996) Switzerland : 1996), 2018-04, Vol.337, p.560-566
Main Authors: Liu, Xian, Liang, Jintao, Song, Xiuli, Yang, Huimin, Li, Xiaojing, Dai, Hongyan, Song, Yingli, Liu, Yuan, Hu, Jie, Pan, Xinru, OuYang, Xiu, Liang, Zhenhai
Format: Article
Language:English
Subjects:
Bipolar membrane
Optical material
Photoelectrocatalysis
Water dissociation
ZnCr-LDH/g-C3N4
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Summary:•The ZnCr-LDH/g-C3N4 composite photocatalyst is designed and prepared.•The composite exhibit excellent catalytic activity for water dissociation in the BPM.•A method for evaluating the photoelectrocatalytic performance is proposed. In this study, we have constructed ZnCr-LDH/g-C3N4 composite photocatalysts via in-situ synthesis approach. This composite material was used as catalyst interlayer of BPM to promote water dissociation. Results indicated that the combination of ZnCr-LDH and g-C3N4 could effectively improve the photoelectrocatalytic water dissociation activity. When the experiment time lasted for 1 h, the pH decreased to 1.52 in compartment 2, and increased to 13.11 in compartment 4 by using ZnCr-LDH/g-C3N4 composite catalyst.
ISSN:1385-8947
1873-3212
DOI:10.1016/j.cej.2017.12.138