CdIn<sub>2</sub>S<sub>4</sub>/In(OH)<sub>3</sub>/NiCr-LDH Multi-Interface Heterostructure Photocatalyst for Enhanced Photocatalytic H<sub>2</sub> Evolution and Cr(VI) Reduction

CdIn<sub>2</sub>S<sub>4</sub>/In(OH)<sub>3</sub>/NiCr-LDH Multi-Interface Heterostructure Photocatalyst for Enhanced Photocatalytic H<sub>2</sub> Evolution and Cr(VI) Reduction

The development of highly active and stable photocatalysts, an effective way to remediate environment pollution and alleviate energy shortages, remains a challenging issue. In this work, a CdIn<sub>2</sub>S<sub>4</sub>/In(OH)<sub>3</sub> nanocomposite was deposite...

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Autores principales: Rao Fu, Yinyan Gong, Can Li, Lengyuan Niu, Xinjuan Liu
Formato: article
Lenguaje:EN
Publicado: MDPI AG 2021
Materias:
photocatalysis
nano-heterostructures
charge separation
LDHs
CdIn<sub>2</sub>S<sub>4</sub>
In(OH)<sub>3</sub>
Chemistry
QD1-999
Acceso en línea:https://doaj.org/article/d644512858b340e1a773f0bb40f1b063
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spelling oai:doaj.org-article:d644512858b340e1a773f0bb40f1b0632021-11-25T18:32:37ZCdIn<sub>2</sub>S<sub>4</sub>/In(OH)<sub>3</sub>/NiCr-LDH Multi-Interface Heterostructure Photocatalyst for Enhanced Photocatalytic H<sub>2</sub> Evolution and Cr(VI) Reduction10.3390/nano111131222079-4991https://doaj.org/article/d644512858b340e1a773f0bb40f1b0632021-11-01T00:00:00Zhttps://www.mdpi.com/2079-4991/11/11/3122https://doaj.org/toc/2079-4991The development of highly active and stable photocatalysts, an effective way to remediate environment pollution and alleviate energy shortages, remains a challenging issue. In this work, a CdIn<sub>2</sub>S<sub>4</sub>/In(OH)<sub>3</sub> nanocomposite was deposited in-situ on NiCr-LDH nanosheets by a simple hydrothermal method, and the obtained CdIn<sub>2</sub>S<sub>4</sub>/In(OH)<sub>3</sub>/NiCr-LDH heterostructure photocatalysts with multiple intimate-contact interfaces exhibited better photocatalytic activity. The photocatalytic H<sub>2</sub> evolution rate of CdIn<sub>2</sub>S<sub>4</sub>/In(OH)<sub>3</sub>/NiCr-LDH increased to 10.9 and 58.7 times that of the counterparts CdIn<sub>2</sub>S<sub>4</sub> and NiCr-LDH, respectively. Moreover, the photocatalytic removal efficiency of Cr(VI) increased from 6% for NiCr-LDH and 75% for CdIn<sub>2</sub>S<sub>4</sub> to 97% for CdIn<sub>2</sub>S<sub>4</sub>/In(OH)<sub>3</sub>/NiCr-LDH. The enhanced photocatalytic performance was attributed to the formation of multi-interfaces with strong interfacial interactions and staggered band alignments, which offered multiple pathways for carrier migration, thus promoting the separation efficiency of photo-excited electrons and holes. This study demonstrates a facile method to fabricate inexpensive and efficient heterostructure photocatalysts for solving environmental problems.Rao FuYinyan GongCan LiLengyuan NiuXinjuan LiuMDPI AGarticlephotocatalysisnano-heterostructurescharge separationLDHsCdIn<sub>2</sub>S<sub>4</sub>In(OH)<sub>3</sub>ChemistryQD1-999ENNanomaterials, Vol 11, Iss 3122, p 3122 (2021)
institution DOAJ
collection DOAJ
language EN
topic photocatalysis
nano-heterostructures
charge separation
LDHs
CdIn<sub>2</sub>S<sub>4</sub>
In(OH)<sub>3</sub>
Chemistry
QD1-999
spellingShingle photocatalysis
nano-heterostructures
charge separation
LDHs
CdIn<sub>2</sub>S<sub>4</sub>
In(OH)<sub>3</sub>
Chemistry
QD1-999
Rao Fu
Yinyan Gong
Can Li
Lengyuan Niu
Xinjuan Liu
CdIn<sub>2</sub>S<sub>4</sub>/In(OH)<sub>3</sub>/NiCr-LDH Multi-Interface Heterostructure Photocatalyst for Enhanced Photocatalytic H<sub>2</sub> Evolution and Cr(VI) Reduction
description The development of highly active and stable photocatalysts, an effective way to remediate environment pollution and alleviate energy shortages, remains a challenging issue. In this work, a CdIn<sub>2</sub>S<sub>4</sub>/In(OH)<sub>3</sub> nanocomposite was deposited in-situ on NiCr-LDH nanosheets by a simple hydrothermal method, and the obtained CdIn<sub>2</sub>S<sub>4</sub>/In(OH)<sub>3</sub>/NiCr-LDH heterostructure photocatalysts with multiple intimate-contact interfaces exhibited better photocatalytic activity. The photocatalytic H<sub>2</sub> evolution rate of CdIn<sub>2</sub>S<sub>4</sub>/In(OH)<sub>3</sub>/NiCr-LDH increased to 10.9 and 58.7 times that of the counterparts CdIn<sub>2</sub>S<sub>4</sub> and NiCr-LDH, respectively. Moreover, the photocatalytic removal efficiency of Cr(VI) increased from 6% for NiCr-LDH and 75% for CdIn<sub>2</sub>S<sub>4</sub> to 97% for CdIn<sub>2</sub>S<sub>4</sub>/In(OH)<sub>3</sub>/NiCr-LDH. The enhanced photocatalytic performance was attributed to the formation of multi-interfaces with strong interfacial interactions and staggered band alignments, which offered multiple pathways for carrier migration, thus promoting the separation efficiency of photo-excited electrons and holes. This study demonstrates a facile method to fabricate inexpensive and efficient heterostructure photocatalysts for solving environmental problems.
format article
author Rao Fu
Yinyan Gong
Can Li
Lengyuan Niu
Xinjuan Liu
author_facet Rao Fu
Yinyan Gong
Can Li
Lengyuan Niu
Xinjuan Liu
author_sort Rao Fu
title CdIn<sub>2</sub>S<sub>4</sub>/In(OH)<sub>3</sub>/NiCr-LDH Multi-Interface Heterostructure Photocatalyst for Enhanced Photocatalytic H<sub>2</sub> Evolution and Cr(VI) Reduction
title_short CdIn<sub>2</sub>S<sub>4</sub>/In(OH)<sub>3</sub>/NiCr-LDH Multi-Interface Heterostructure Photocatalyst for Enhanced Photocatalytic H<sub>2</sub> Evolution and Cr(VI) Reduction
title_full CdIn<sub>2</sub>S<sub>4</sub>/In(OH)<sub>3</sub>/NiCr-LDH Multi-Interface Heterostructure Photocatalyst for Enhanced Photocatalytic H<sub>2</sub> Evolution and Cr(VI) Reduction
title_fullStr CdIn<sub>2</sub>S<sub>4</sub>/In(OH)<sub>3</sub>/NiCr-LDH Multi-Interface Heterostructure Photocatalyst for Enhanced Photocatalytic H<sub>2</sub> Evolution and Cr(VI) Reduction
title_full_unstemmed CdIn<sub>2</sub>S<sub>4</sub>/In(OH)<sub>3</sub>/NiCr-LDH Multi-Interface Heterostructure Photocatalyst for Enhanced Photocatalytic H<sub>2</sub> Evolution and Cr(VI) Reduction
title_sort cdin<sub>2</sub>s<sub>4</sub>/in(oh)<sub>3</sub>/nicr-ldh multi-interface heterostructure photocatalyst for enhanced photocatalytic h<sub>2</sub> evolution and cr(vi) reduction
publisher MDPI AG
publishDate 2021
url https://doaj.org/article/d644512858b340e1a773f0bb40f1b063
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