Boosted photoinduced cathodic protection performance of ZnIn2S4/TiO2 nanoflowerbush with efficient photoelectric conversion in NaCl solution

doi:10.1016/j.jallcom.2021.160144

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	Boosted photoinduced cathodic protection performance of ZnIn2S4/TiO2 nanoflowerbush with efficient photoelectric conversion in NaCl solution
	Jiang, Xuhong 1,3,4,5; Sun, Mengmeng 2,3,4,5; Chen, Zhuoyuan 2,3,4,5; Jing, Jiangping 2,3,4,5; Lu, Guiying 1,3,4; Feng, Chang 1,3,4
刊名	JOURNAL OF ALLOYS AND COMPOUNDS
	2021-09-25
卷号	876 页码:15
关键词	Nanoflowerbush photoelectrode Anticorrosion Photoinduced cathodic protection NaCl solution Copper and carbon steel Photoelectric conversion
ISSN号	0925-8388
DOI	10.1016/j.jallcom.2021.160144
通讯作者	Chen, Zhuoyuan(zychen@qdio.ac.cn)
英文摘要	Boosting the photoinduced cathodic protection (CP) for metals in NaCl solution is crucial for achieving the application of photoelectrochemical conversion in marine corrosion protection. An environmentally friendly three-dimensional ZnIn2S4/TiO2 nanoflowerbush (NFB) photoelectrode was constructed with sufficient interfacial incorporation based on the ultrafine branched TiO2 nanobush substrate via a facile in situ hydrothermal method. This ZnIn2S4/TiO2 NFB nanoheterojunction composite behaves excellent photo induced CP performance for metallic materials. This is owing to the optimized construction of photoelectrode with relatively negative band potential, wide solar spectrum response, effective generation and collection of photoinduced electrons. The morphology, distribution and performance of ZnIn2S4 vary with different substrates. The pure ZnIn2S4 powder is nanoflower sphere composed of a lot of thin petals; when ZnIn2S4 grow onto the FTO glass, the ZnIn2S4 petals are distributed vertically on the two-dimensional structure; when ZnIn2S4 grow on the three-dimensional ultrafine branched TiO2 nanobush substrate, a ZnIn2S4/TiO2 NFB architecture with ultrafine TiO2 branchlet cores are formed. This ZnIn2S4/TiO2 NFB photoelectrode can achieve efficient photoinduced CP performance for pure copper and low alloy steels with different negative self-corrosion potentials, such as Cu (-0.18 V), E40 (-0.45 V), Q345 (-0.55 V) and Q235 carbon steel (-0.65 V) under simulated sunlight irradiation in NaCl solution without additional hole scavengers, and the photoinduced CP current densities reach as high as 170, 72, 63 and 44 mu A cm(-2), respectively. The high-efficiency photoinduced CP performance is closely related to the band structure gradient matching between the TiO2 and ZnIn2S4, prompting both the widened absorption of solar spectrum and high-efficiency transfer of the photogenerated electron-hole pairs. Importantly, the negative band potential of ZnIn2S4 endues a lower surface work function which benefits the electron transport to the under-protected metallic materials to achieve photoinduced CP. This photoelectrode exhibits huge photoinduced CP application potential in marine environments. (C) 2021 Elsevier B.V. All rights reserved.
资助项目	National Natural Science Foundation of China[41676069] ; National Natural Science Foundation of China[41976036] ; National Natural Science Foundation of China[41906034] ; Qingdao Applied Basic Research Plan Program[19-6-2-79cg] ; State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute (LSMRI)[KF190408]
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000660305100001
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/176900]
专题	海洋研究所_海洋腐蚀与防护研究发展中心
通讯作者	Chen, Zhuoyuan
作者单位	1.Univ Chinese Acad Sci, 19 Jia Yuquan Rd, Beijing 100049, Peoples R China 2.Pilot Natl Lab Marine Sci & Technol Qingdao, Open Studio Marine Corros & Protect, 1 Wenhai Rd, Qingdao 266237, Peoples R China 3.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Environm Corros & Biofouling, 7 Nanhai Rd, Qingdao 266071, Peoples R China 4.Chinese Acad Sci, Ctr Ocean Megasci, 7 Nanhai Rd, Qingdao 266071, Peoples R China 5.Luoyang Ship Mat Res Inst LSMRI, State Key Lab Marine Corros & Protect, Wenhai Rd, Qingdao 266237, Peoples R China
推荐引用方式 GB/T 7714	Jiang, Xuhong,Sun, Mengmeng,Chen, Zhuoyuan,et al. Boosted photoinduced cathodic protection performance of ZnIn2S4/TiO2 nanoflowerbush with efficient photoelectric conversion in NaCl solution[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2021,876:15.
APA	Jiang, Xuhong,Sun, Mengmeng,Chen, Zhuoyuan,Jing, Jiangping,Lu, Guiying,&Feng, Chang.(2021).Boosted photoinduced cathodic protection performance of ZnIn2S4/TiO2 nanoflowerbush with efficient photoelectric conversion in NaCl solution.JOURNAL OF ALLOYS AND COMPOUNDS,876,15.
MLA	Jiang, Xuhong,et al."Boosted photoinduced cathodic protection performance of ZnIn2S4/TiO2 nanoflowerbush with efficient photoelectric conversion in NaCl solution".JOURNAL OF ALLOYS AND COMPOUNDS 876(2021):15.