A novel TiO2/ZnIn2S4/MgIn2S4 three-phase heterojunction photoanode for enhanced photoelectrochemical cathodic protection of 316L SS

•A three-phase multistep heterojunction photoanode is fabricated.•The TiO2/ZnIn2S4/MgIn2S4 photoelectrode presents desirable PECCP performance.•The possible mechanism for improving PECCP is proposed. A novel TiO2/ZnIn2S4/MgIn2S4 photoanode for photoelectrochemical cathodic protection (PECCP) was pre...

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Published in:Materials letters 2023-11, Vol.351, p.135030, Article 135030
Main Authors: Qian, Feng, Cheng, Yuanhang, Bai, Zhenyu, Cao, Meijing, Tian, Jing, Li, Jiarun, Wang, Lei
Format: Article
Language:English
Subjects:
Composite materials
Photoelectrochemical cathodic protection
Semiconductors
Three-phase heterojunction
TiO2/ZnIn2S4/MgIn2S4
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cited_by cdi_FETCH-LOGICAL-c306t-2fde8c235e89fdec59f85d46b03de02a5b7b87d19868cdfb7074cd8758d85743
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container_end_page
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container_start_page 135030
container_title Materials letters
container_volume 351
creator Qian, Feng
Cheng, Yuanhang
Bai, Zhenyu
Cao, Meijing
Tian, Jing
Li, Jiarun
Wang, Lei
description •A three-phase multistep heterojunction photoanode is fabricated.•The TiO2/ZnIn2S4/MgIn2S4 photoelectrode presents desirable PECCP performance.•The possible mechanism for improving PECCP is proposed. A novel TiO2/ZnIn2S4/MgIn2S4 photoanode for photoelectrochemical cathodic protection (PECCP) was prepared by twostep hydrothermal method. A three-phase multistep heterojunction structure was fabricated by the uniform distribution of ZnIn2S4/MgIn2S4 composite layer on TiO2 nanosheets. The resultant type II heterostructure promoted the separation of photogenerated carriers and alleviated the recombination of electron-hole pairs. A photocurrent density of 34.5 μA cm−2 between the photoanode and 316L stainless steel (316L SS) associated with a potential drop of 587 mV of 316L SS were obtained after coupling the photoanode with 316L SS under the illumination of AM 1.5G, validating a desirable PECCP performance of TiO2/ZnIn2S4/MgIn2S4 photoanode.
doi_str_mv 10.1016/j.matlet.2023.135030
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subjects Composite materials
Photoelectrochemical cathodic protection
Semiconductors
Three-phase heterojunction
TiO2/ZnIn2S4/MgIn2S4
title A novel TiO2/ZnIn2S4/MgIn2S4 three-phase heterojunction photoanode for enhanced photoelectrochemical cathodic protection of 316L SS
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