Electrophoretic deposition of ZnSnO3/MoS2 heterojunction photoanode with improved photoelectric response by low recombination rate

Photoactive heterostructures with low recombination rate of photocarriers, high photostability, and easy fabrication methods are desirable for the future photoelectrochemical applications. Herein, photostable ZnSnO3 and MoS2 based heterojunction photoanodes were synthesized readily via an electropho...

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Veröffentlicht in:Journal of alloys and compounds 2019-11, Vol.810, p.151845, Article 151845
Hauptverfasser: Ma, Jingyao, Lu, Chunhui, Liu, Changji, Qi, Mei, Xu, Xiang, Yang, Dan, Xu, Xinlong
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container_title Journal of alloys and compounds
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creator Ma, Jingyao
Lu, Chunhui
Liu, Changji
Qi, Mei
Xu, Xiang
Yang, Dan
Xu, Xinlong
description Photoactive heterostructures with low recombination rate of photocarriers, high photostability, and easy fabrication methods are desirable for the future photoelectrochemical applications. Herein, photostable ZnSnO3 and MoS2 based heterojunction photoanodes were synthesized readily via an electrophoretic deposition method. The photoelectrochemical measurements revealed that the maximum photocurrent density of these ZnSnO3/MoS2 heterojunction photoanodes is ∼2.3 times and ∼27.3 times larger than that of pristine ZnSnO3 and pristine MoS2 photoanodes at the same experimental condition, respectively. According to the high-resolution X-ray photoelectron spectroscopy analysis, we can confirm that the ZnSnO3/MoS2 interface forms a type II band alignment. Photoelectrochemical property of the ZnSnO3/MoS2 photoelectrodes is enhanced mainly attribute to the separation improvement of photogenerated carriers at the ZnSnO3/MoS2 interface, which is proved by the impedance spectroscopy analysis. This work confirms that two-dimensional materials such as MoS2 as a most stable narrow band-gap materials can alleviate the photocarrier recombination rate to improve the traditional photoactive materials, which have great potential applications in photoelectrochemical cells. •Novel ZnSnO3/MoS2 heterostructure photoanodes were synthesized by electrophoretic deposition method.•The ZnSnO3/MoS2 heterostructure photoanode shows improved photoelectric response.•The type-II band alignment of ZnSnO3/MoS2 heterojunction has been formed.•The photoelectric enhancement of ZnSnO3/MoS2 photoanode is mainly due to effective charge separation.
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Herein, photostable ZnSnO3 and MoS2 based heterojunction photoanodes were synthesized readily via an electrophoretic deposition method. The photoelectrochemical measurements revealed that the maximum photocurrent density of these ZnSnO3/MoS2 heterojunction photoanodes is ∼2.3 times and ∼27.3 times larger than that of pristine ZnSnO3 and pristine MoS2 photoanodes at the same experimental condition, respectively. According to the high-resolution X-ray photoelectron spectroscopy analysis, we can confirm that the ZnSnO3/MoS2 interface forms a type II band alignment. Photoelectrochemical property of the ZnSnO3/MoS2 photoelectrodes is enhanced mainly attribute to the separation improvement of photogenerated carriers at the ZnSnO3/MoS2 interface, which is proved by the impedance spectroscopy analysis. This work confirms that two-dimensional materials such as MoS2 as a most stable narrow band-gap materials can alleviate the photocarrier recombination rate to improve the traditional photoactive materials, which have great potential applications in photoelectrochemical cells. •Novel ZnSnO3/MoS2 heterostructure photoanodes were synthesized by electrophoretic deposition method.•The ZnSnO3/MoS2 heterostructure photoanode shows improved photoelectric response.•The type-II band alignment of ZnSnO3/MoS2 heterojunction has been formed.•The photoelectric enhancement of ZnSnO3/MoS2 photoanode is mainly due to effective charge separation.</description><identifier>ISSN: 0925-8388</identifier><identifier>EISSN: 1873-4669</identifier><identifier>DOI: 10.1016/j.jallcom.2019.151845</identifier><language>eng</language><publisher>Lausanne: Elsevier B.V</publisher><subject>Dimensional stability ; Electrons ; Electrophoretic deposition ; Heterojunction photoanode ; Heterojunctions ; Heterostructures ; Molybdenum disulfide ; MoS2 ; Photoanodes ; Photoelectric effect ; Photoelectric emission ; Photoelectricity ; Photoelectrochemical devices ; Photoelectrons ; Spectroscopic analysis ; Spectrum analysis ; Two dimensional analysis ; Two dimensional materials ; Zinc stannate ; ZnSnO3</subject><ispartof>Journal of alloys and compounds, 2019-11, Vol.810, p.151845, Article 151845</ispartof><rights>2019 Elsevier B.V.</rights><rights>Copyright Elsevier BV Nov 25, 2019</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c374t-bce4a408122b410fd3000fc3406700af90eb22f5050cf1f892da5cd43455bb7f3</citedby><cites>FETCH-LOGICAL-c374t-bce4a408122b410fd3000fc3406700af90eb22f5050cf1f892da5cd43455bb7f3</cites><orcidid>0000-0002-3034-810X</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.jallcom.2019.151845$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3548,27923,27924,45994</link.rule.ids></links><search><creatorcontrib>Ma, Jingyao</creatorcontrib><creatorcontrib>Lu, Chunhui</creatorcontrib><creatorcontrib>Liu, Changji</creatorcontrib><creatorcontrib>Qi, Mei</creatorcontrib><creatorcontrib>Xu, Xiang</creatorcontrib><creatorcontrib>Yang, Dan</creatorcontrib><creatorcontrib>Xu, Xinlong</creatorcontrib><title>Electrophoretic deposition of ZnSnO3/MoS2 heterojunction photoanode with improved photoelectric response by low recombination rate</title><title>Journal of alloys and compounds</title><description>Photoactive heterostructures with low recombination rate of photocarriers, high photostability, and easy fabrication methods are desirable for the future photoelectrochemical applications. 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subjects Dimensional stability
Electrons
Electrophoretic deposition
Heterojunction photoanode
Heterojunctions
Heterostructures
Molybdenum disulfide
MoS2
Photoanodes
Photoelectric effect
Photoelectric emission
Photoelectricity
Photoelectrochemical devices
Photoelectrons
Spectroscopic analysis
Spectrum analysis
Two dimensional analysis
Two dimensional materials
Zinc stannate
ZnSnO3
title Electrophoretic deposition of ZnSnO3/MoS2 heterojunction photoanode with improved photoelectric response by low recombination rate
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