Surface modification of Ti6Al4V alloy by polydopamine grafted GO/ZnO nanocomposite coating

doi:10.1016/j.surfcoat.2021.127534

	Surface modification of Ti6Al4V alloy by polydopamine grafted GO/ZnO nanocomposite coating
	Hu, Yong 2,3; Li, Shenshen 1,3; Kang, Wenjiang 2,3; Lin, Hongze 2,3; Hu, Yongqi 2,3
刊名	SURFACE & COATINGS TECHNOLOGY
	2021-09-25
卷号	422
关键词	Ti6Al4V Polydopamine Graphene oxide Zinc oxide Corrosion resistance Antibacterial activity
ISSN号	0257-8972
DOI	10.1016/j.surfcoat.2021.127534
英文摘要	Implant prosthetics composed of the Ti6Al4V alloy are prone to releasing harmful metal ions into surrounding tissue, as well as causing bacterial infections, in the human body. In order to address these problems, the surface of the Ti6Al4V alloy was grafted with polydopamine (PDA) and then coated with a graphene oxide/zinc oxide (GO/ZnO) nanocomposite coating by both hydrothermal growth and drop-casting methods. The phase composition, microstructure, wettability, corrosion resistance, and antibacterial activities of the nanocomposite coatings at each stage of growth were systematically analyzed. The results showed that the ZnO/PDA nanocoating and GO/ZnO/PDA nanocomposite coating demonstrated excellent wettability properties as well as antibacterial activities against Escherichia coli and Staphylococcus aureus. The introduction of GO into the ZnO/PDA nanocoating enhanced the ability of the nanocoating, which synergistically enabled the mineralization of hydroxyapatite onto the nanocomposite coating while immersed in a simulated body fluid (SBF) solution. The GO/ZnO/ PDA nanocomposite coating also improved the corrosion resistance of Ti6Al4V substrate in Ringer's solution by preventing the diffusion of corrosive electrolyte ions through the coating to the Ti6Al4V substrate.
WOS研究方向	Materials Science ; Physics
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000685607200057
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/148787]
专题	材料科学与工程学院
作者单位	1.Shandong Univ, Natl Engn Res Ctr Colloidal Mat, Jinan 250100, Peoples R China; 2.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China; 3.Lanzhou Univ Technol, Sch Mat Sci & Engn, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	Hu, Yong,Li, Shenshen,Kang, Wenjiang,et al. Surface modification of Ti6Al4V alloy by polydopamine grafted GO/ZnO nanocomposite coating[J]. SURFACE & COATINGS TECHNOLOGY,2021,422.
APA	Hu, Yong,Li, Shenshen,Kang, Wenjiang,Lin, Hongze,&Hu, Yongqi.(2021).Surface modification of Ti6Al4V alloy by polydopamine grafted GO/ZnO nanocomposite coating.SURFACE & COATINGS TECHNOLOGY,422.
MLA	Hu, Yong,et al."Surface modification of Ti6Al4V alloy by polydopamine grafted GO/ZnO nanocomposite coating".SURFACE & COATINGS TECHNOLOGY 422(2021).