New g-C3N4/GO/MoS2 composites as efficient photocatalyst for photocathodic protection of 304 stainless steel

Photocathodic protection is an economical and environmental metal anticorrosion method. In this research, we successfully synthesized the g-C3N4/GO (15 wt%)/MoS2 catalytic materials by a facile hydrothermal method. The results show that the as-prepared g-C3N4/GO (15 wt%)/MoS2 composites prominently...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Hongai Zheng, Xin Sun, Yue Liu, Shuangyan Jiang, Derui Wang, Yankun Fan, Lili Hu, Daquan Zhang, Weifeng Yao, Lizhi Zhang
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	graphitic carbon nitride heterojunction photocathodic protection photoelectrochemical Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/7888337ae7124f95983bd975da4ded3a
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:7888337ae7124f95983bd975da4ded3a
record_format	dspace
spelling	oai:doaj.org-article:7888337ae7124f95983bd975da4ded3a2021-11-06T11:16:17ZNew g-C3N4/GO/MoS2 composites as efficient photocatalyst for photocathodic protection of 304 stainless steel0273-12231996-973210.2166/wst.2021.235https://doaj.org/article/7888337ae7124f95983bd975da4ded3a2021-08-01T00:00:00Zhttp://wst.iwaponline.com/content/84/3/499https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732Photocathodic protection is an economical and environmental metal anticorrosion method. In this research, we successfully synthesized the g-C3N4/GO (15 wt%)/MoS2 catalytic materials by a facile hydrothermal method. The results show that the as-prepared g-C3N4/GO (15 wt%)/MoS2 composites prominently enhanced photocatalytic activities for the photocathodic protection of 304 stainless steel (SS) compared with the corresponding pristine g-C3N4 and MoS2. Notably, the AC impedance results demonstrated that the Rct value of 304 SS coupled with g-C3N4/GO (15 wt%)/MoS2 decreased to 35.66 Ω•cm2, which is 29 and 37 times lower than that of g-C3N4 and MoS2 alone. In addition, g-C3N4/GO (15 wt%)/MoS2 provided the highest current density (77.19 μA•cm2) for the 304 SS, which is four times that of pristine g-C3N4. All results indicate that as-prepared g-C3N4/GO (15 wt%)/MoS2 photocatalysts have produced a distinct enhancement on photocathodic protection performance. An optimum decorating amount of MoS2 onto g-C3N4 forms heterojunctions of g-C3N4/MoS2, which favor the separation of electrons and holes efficiently. Furthermore, the addition of GO further promotes the separation and transfer of photo-induced carriers. HIGHLIGHTS g-C3N4/GO/MoS2 photocatalytic activity was enhanced to protect 304 stainless steel.; The absorption boundary of g-C3N4/GO/MoS2 was red-shifted toward the visible area.; The photo-induced carriers’ recombination of g-C3N4/GO/MoS2 was inhibited.; The 304 stainless steel was effectively protected when coupled to a photo-anode.;Hongai ZhengXin SunYue LiuShuangyan JiangDerui WangYankun FanLili HuDaquan ZhangWeifeng YaoLizhi ZhangIWA Publishingarticlegraphitic carbon nitrideheterojunctionphotocathodic protectionphotoelectrochemicalEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 84, Iss 3, Pp 499-511 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	graphitic carbon nitride heterojunction photocathodic protection photoelectrochemical Environmental technology. Sanitary engineering TD1-1066
spellingShingle	graphitic carbon nitride heterojunction photocathodic protection photoelectrochemical Environmental technology. Sanitary engineering TD1-1066 Hongai Zheng Xin Sun Yue Liu Shuangyan Jiang Derui Wang Yankun Fan Lili Hu Daquan Zhang Weifeng Yao Lizhi Zhang New g-C3N4/GO/MoS2 composites as efficient photocatalyst for photocathodic protection of 304 stainless steel
description	Photocathodic protection is an economical and environmental metal anticorrosion method. In this research, we successfully synthesized the g-C3N4/GO (15 wt%)/MoS2 catalytic materials by a facile hydrothermal method. The results show that the as-prepared g-C3N4/GO (15 wt%)/MoS2 composites prominently enhanced photocatalytic activities for the photocathodic protection of 304 stainless steel (SS) compared with the corresponding pristine g-C3N4 and MoS2. Notably, the AC impedance results demonstrated that the Rct value of 304 SS coupled with g-C3N4/GO (15 wt%)/MoS2 decreased to 35.66 Ω•cm2, which is 29 and 37 times lower than that of g-C3N4 and MoS2 alone. In addition, g-C3N4/GO (15 wt%)/MoS2 provided the highest current density (77.19 μA•cm2) for the 304 SS, which is four times that of pristine g-C3N4. All results indicate that as-prepared g-C3N4/GO (15 wt%)/MoS2 photocatalysts have produced a distinct enhancement on photocathodic protection performance. An optimum decorating amount of MoS2 onto g-C3N4 forms heterojunctions of g-C3N4/MoS2, which favor the separation of electrons and holes efficiently. Furthermore, the addition of GO further promotes the separation and transfer of photo-induced carriers. HIGHLIGHTS g-C3N4/GO/MoS2 photocatalytic activity was enhanced to protect 304 stainless steel.; The absorption boundary of g-C3N4/GO/MoS2 was red-shifted toward the visible area.; The photo-induced carriers’ recombination of g-C3N4/GO/MoS2 was inhibited.; The 304 stainless steel was effectively protected when coupled to a photo-anode.;
format	article
author	Hongai Zheng Xin Sun Yue Liu Shuangyan Jiang Derui Wang Yankun Fan Lili Hu Daquan Zhang Weifeng Yao Lizhi Zhang
author_facet	Hongai Zheng Xin Sun Yue Liu Shuangyan Jiang Derui Wang Yankun Fan Lili Hu Daquan Zhang Weifeng Yao Lizhi Zhang
author_sort	Hongai Zheng
title	New g-C3N4/GO/MoS2 composites as efficient photocatalyst for photocathodic protection of 304 stainless steel
title_short	New g-C3N4/GO/MoS2 composites as efficient photocatalyst for photocathodic protection of 304 stainless steel
title_full	New g-C3N4/GO/MoS2 composites as efficient photocatalyst for photocathodic protection of 304 stainless steel
title_fullStr	New g-C3N4/GO/MoS2 composites as efficient photocatalyst for photocathodic protection of 304 stainless steel
title_full_unstemmed	New g-C3N4/GO/MoS2 composites as efficient photocatalyst for photocathodic protection of 304 stainless steel
title_sort	new g-c3n4/go/mos2 composites as efficient photocatalyst for photocathodic protection of 304 stainless steel
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/7888337ae7124f95983bd975da4ded3a
work_keys_str_mv	AT hongaizheng newgc3n4gomos2compositesasefficientphotocatalystforphotocathodicprotectionof304stainlesssteel AT xinsun newgc3n4gomos2compositesasefficientphotocatalystforphotocathodicprotectionof304stainlesssteel AT yueliu newgc3n4gomos2compositesasefficientphotocatalystforphotocathodicprotectionof304stainlesssteel AT shuangyanjiang newgc3n4gomos2compositesasefficientphotocatalystforphotocathodicprotectionof304stainlesssteel AT deruiwang newgc3n4gomos2compositesasefficientphotocatalystforphotocathodicprotectionof304stainlesssteel AT yankunfan newgc3n4gomos2compositesasefficientphotocatalystforphotocathodicprotectionof304stainlesssteel AT lilihu newgc3n4gomos2compositesasefficientphotocatalystforphotocathodicprotectionof304stainlesssteel AT daquanzhang newgc3n4gomos2compositesasefficientphotocatalystforphotocathodicprotectionof304stainlesssteel AT weifengyao newgc3n4gomos2compositesasefficientphotocatalystforphotocathodicprotectionof304stainlesssteel AT lizhizhang newgc3n4gomos2compositesasefficientphotocatalystforphotocathodicprotectionof304stainlesssteel
_version_	1718443739673788416

New g-C3N4/GO/MoS2 composites as efficient photocatalyst for photocathodic protection of 304 stainless steel

Ejemplares similares