Neweffects of TiO2 nanotube/g-C3N4 hybrids on the corrosion protection performance of epoxy coatings

doi:10.1016/j.molliq.2020.114214

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	Neweffects of TiO2 nanotube/g-C3N4 hybrids on the corrosion protection performance of epoxy coatings
	Pourhashem, Sepideh 2,3,4; Duan, Jizhou 2,3,4; Guan, Fang 2,3,4; Wang, Nan 1,2,3,4; Gao, Ying 1,2,3,4; Hou, Baorong 2,3,4
刊名	JOURNAL OF MOLECULAR LIQUIDS
	2020-11-01
卷号	317 页码:15
关键词	TiO2 nanotube/g-C3N4 hybrids Epoxy coating Corrosion resistance Visible light
ISSN号	0167-7322
DOI	10.1016/j.molliq.2020.114214
通讯作者	Duan, Jizhou(duanjz@qdio.ac.cn)
英文摘要	In this research, the effects of visible-light-driven titanium dioxide (TiO2) nanotube/graphitic carbon nitride (g-C3N4) hybrids on the corrosion protection performance of epoxy coatings both in the dark and under visible-light irradiation are studied. For this, TiO2 nanotube/g-C3N4 hybrids and 3-(aminopropyl)triethoxysilane functionalized hybrids were synthesized and characterized by X-ray diffraction, X-ray photoelectron spectroscopy, transmission electron microscopy, scanning electron microscopy coupled with energy dispersive X-ray spectroscopy mapping, N-2 adsorption/desorption technique, and UV-Vis spectroscopy. TiO2 nanotubes containing 30 wt% g-C3N4 (H30%) showed the highest photocatalytic performance due to the simultaneous effects of high surface area and band-gap structure; however, the photocatalytic activity decreased after the silane functionalization of H30%. Then, epoxy coatings containing H30% and silane functionalized H30% in different amounts (0.1, 0.3, and 0.5 wt%) were prepared, and their corrosion resistance was investigated by electrochemical impedance spectroscopy in NaCl solution. The results revealed that the epoxy coatings containing 0.3 wt% hybrids have higher corrosion resistance than that of the neat coating, and silane-functionalized nanofillers more effectively enhance the corrosion resistance. However, when these nanocomposite coatings are irradiated with visible light, their corrosion protection performance remarkably reduces owing to the degradation of organic matrix by the oxidizing radicals formed on the photocatalytic hybrid surface. (C) 2020 Elsevier B.V. All rights reserved.
资助项目	CAS President's International Fellowship Initiative (PIFI)[2019PE0059] ; National Natural Science Foundation of China (NSFC)[41806090] ; National Natural Science Foundation of China (NSFC)[41827805]
WOS研究方向	Chemistry ; Physics
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000580655700038
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/169063]
专题	海洋研究所_海洋腐蚀与防护研究发展中心
通讯作者	Duan, Jizhou
作者单位	1.Univ Chinese Acad Sci, 19 Jia Yuquan Rd, Beijing 100039, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Environm Corros & Biofouling, 7 Nanhai Rd, Qingdao 266071, Peoples R China 3.Pilot Natl Lab Marine Sci & Technol Qingdao, Open Studio Marine Corros & Protect, 1 Wenhai Rd, Qingdao 266237, Peoples R China 4.Chinese Acad Sci, Ctr Ocean Megasci, 7 Nanhai Rd, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Pourhashem, Sepideh,Duan, Jizhou,Guan, Fang,et al. Neweffects of TiO2 nanotube/g-C3N4 hybrids on the corrosion protection performance of epoxy coatings[J]. JOURNAL OF MOLECULAR LIQUIDS,2020,317:15.
APA	Pourhashem, Sepideh,Duan, Jizhou,Guan, Fang,Wang, Nan,Gao, Ying,&Hou, Baorong.(2020).Neweffects of TiO2 nanotube/g-C3N4 hybrids on the corrosion protection performance of epoxy coatings.JOURNAL OF MOLECULAR LIQUIDS,317,15.
MLA	Pourhashem, Sepideh,et al."Neweffects of TiO2 nanotube/g-C3N4 hybrids on the corrosion protection performance of epoxy coatings".JOURNAL OF MOLECULAR LIQUIDS 317(2020):15.