Experimental and DFT studies on corrosion protection performance of epoxy/graphene quantum dots@TiO2 nanotubes coatings

doi:10.1016/j.conbuildmat.2022.126501

	Experimental and DFT studies on corrosion protection performance of epoxy/graphene quantum dots@TiO2 nanotubes coatings
	Ji, Xiaohong 1,2,3; Seif, Abdolvahab 4; Duan, Jizhou1,2,3 ; Rashidi, Alimorad 4; Zhou, Ziyang 1,2,3; Pourhashem, Sepideh 1,2,3; Mirzaee, Majid 5; Zhai, Xiaofan 1,2,3; Zhao, Xia1,2,3 ; Hou, Baorong 1,2,3
	2022-03-07
发表期刊	CONSTRUCTION AND BUILDING MATERIALS
ISSN	0950-0618
卷号	322 页码:13
通讯作者	Duan, Jizhou([email protected]) ; Rashidi, Alimorad([email protected])
摘要	In this paper, the nanohybrids of graphene quantum dots and TiO2 nanotubes (GQD@TNT) with different GQD: TNT weight ratios of 1:0.5, 1:1, and 1:2 are synthesized which are abbreviated as H (1:0.5), H (1:1), and H (1:2), respectively, and further modified with 3-(aminopropyl) triethoxysilane. Then, the silane-modified nanohybrids are loaded at 0.3 wt% in the solvent-borne epoxy matrix to achieve anti-corrosion nanocomposite coatings on the steel substrates. The results reveal that the coatings loaded with silane-modified H (1:1) more effectively enhance the corrosion protection efficiency of the polymer coatings, which has a low-frequency impedance modulus of 5.64 x 10(9) Omega.cm(2) even after 90 days of immersion in the 3.5 wt% NaCl solution. Moreover, the density functional theory (DFT) method is performed to explore the energetics and the interaction mechanisms at each interface. The results imply that the strong adhesions observed at each interface would twist and increase the diffusion path of the corrosive agents, and consequently, retard the electrochemical corrosion reactions at the surface of the metal. Therefore, the proposed strategies could be successfully applied for the development of long-term anti-corrosion coatings.
关键词	GQD@TNT nanohybrids Silane modification Long-term corrosion resistance Epoxy coating DFT study
DOI	10.1016/j.conbuildmat.2022.126501
收录类别	SCI
语种	英语
资助项目	CAS-VPST Silk Road Science Fund[133137KYSB20200034]; INSF[99010368]; Key Research Program of Frontier Sciences, CAS[ZDBS-LY-DQC025]; National Natural Science Foundation of China[42106042]; China Postdoctoral Science Fund[2021M693206]; Applied Basic Research Programs of Qingdao[E1KY12106N]
WOS研究方向	Construction & Building Technology ; Engineering ; Materials Science
WOS类目	Construction & Building Technology ; Engineering, Civil ; Materials Science, Multidisciplinary
WOS记录号	WOS:000750953800003
出版者	ELSEVIER SCI LTD
引用统计	被引频次：17[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/177958
专题	海洋环境腐蚀与生物污损重点实验室
通讯作者	Duan, Jizhou; Rashidi, Alimorad
作者单位	1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Environm Corros & Biofouling, Qingdao 266071, Peoples R China 2.Pilot Natl Lab Marine Sci & Technol, Open Studio Marine Corros & Protect, Qingdao 266237, Peoples R China 3.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao 266071, Peoples R China 4.Res Inst Petr Ind RIPI, Nanotechnol Res Ctr, West Entrance Blvd,POB 14857-33111, Tehran, Iran 5.Niroo Res Inst, Nonmetall Mat Res Grp, POB 14665517, Tehran, Iran
第一作者单位	中国科学院海洋研究所; 中国科学院海洋大科学研究中心
通讯作者单位	中国科学院海洋研究所; 中国科学院海洋大科学研究中心
推荐引用方式 GB/T 7714	Ji, Xiaohong,Seif, Abdolvahab,Duan, Jizhou,et al. Experimental and DFT studies on corrosion protection performance of epoxy/graphene quantum dots@TiO2 nanotubes coatings[J]. CONSTRUCTION AND BUILDING MATERIALS,2022,322:13.
APA	Ji, Xiaohong.,Seif, Abdolvahab.,Duan, Jizhou.,Rashidi, Alimorad.,Zhou, Ziyang.,...&Hou, Baorong.(2022).Experimental and DFT studies on corrosion protection performance of epoxy/graphene quantum dots@TiO2 nanotubes coatings.CONSTRUCTION AND BUILDING MATERIALS,322,13.
MLA	Ji, Xiaohong,et al."Experimental and DFT studies on corrosion protection performance of epoxy/graphene quantum dots@TiO2 nanotubes coatings".CONSTRUCTION AND BUILDING MATERIALS 322(2022):13.

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