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Self-Assembled Silane Film and Silver Nanoparticles Coating on Magnesium Alloys for Corrosion Resistance and Antibacterial Applications
R. C. Zeng; L. J. Liu; S. Q. Li; Y. H. Zou; F. Zhang; Y. N. Yang; H. Z. Cui; E. H. Han
2013
Source PublicationActa Metallurgica Sinica-English Letters
ISSN1006-7191
Volume26Issue:6Pages:681-686
AbstractContamination resulting from microbial adhesion on magnesium alloys is very common in many applications. Self-assembly technology was employed to prepare an antibacterial composite coating by fixing silver nanoparticles (AgNPs) onto the surface of magnesium alloys. The AgNPs were immobilized on the surface of 3-aminopropyltrimethoxysilane (APTMS)-modified magnesium alloy AZ31 (APTMS/Mg) through electrostatic inter-attraction between partially protonated amino groups and negatively charged citrate-capped AgNPs, resulting in the AgNPs attached APTMS/Mg (AgNPs/APTMS/Mg) substrate. The prepared Ag colloid and functionalized AZ31 alloy were characterized by ultraviolet-visible (UV-vis) spectroscopy, Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), and electrochemical methods. Finally, the bactericidal activity of AgNPs/APTMS/Mg substrate against Escherichia coli was assessed by the inhibition zone. The results demonstrated that Si-O-Si covalent bonds existed on the substrate with the formation of inorganic Si-O-Mg bonds. AgNPs were immobilized and well-dispersed, forming a uniform submonolayer on the silane film in two dimensions. The AgNPs/APTMS-pretreated AZ31 alloys exhibited better corrosion resistance and excellent antibacterial performance.
description.department[zeng, rongchang ; liu, lijun ; li, shuoqi ; zhang, fen ; cui, hongzhi] shandong univ sci & technol, coll mat sci & engn, qingdao 266590, peoples r china. [zou, yuhong ; yang, yanan] shandong univ sci & technol, coll chem & environm engn, qingdao 266590, peoples r china. [han, en-hou] chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china. ; zeng, rc (reprint author), shandong univ sci & technol, coll mat sci & engn, qingdao 266590, peoples r china. ; rczeng@forxmail.corn ; lishuoqi@sdust.edu.cn
KeywordMagnesium Alloy Nanoparticles Self-assembly Corrosion Antibacterial Effect Gold Nanoparticles Stainless-steel Az31 Pretreatment Performance Adsorption Protection Substrate Behavior Al
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Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/72414
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
R. C. Zeng,L. J. Liu,S. Q. Li,et al. Self-Assembled Silane Film and Silver Nanoparticles Coating on Magnesium Alloys for Corrosion Resistance and Antibacterial Applications[J]. Acta Metallurgica Sinica-English Letters,2013,26(6):681-686.
APA R. C. Zeng.,L. J. Liu.,S. Q. Li.,Y. H. Zou.,F. Zhang.,...&E. H. Han.(2013).Self-Assembled Silane Film and Silver Nanoparticles Coating on Magnesium Alloys for Corrosion Resistance and Antibacterial Applications.Acta Metallurgica Sinica-English Letters,26(6),681-686.
MLA R. C. Zeng,et al."Self-Assembled Silane Film and Silver Nanoparticles Coating on Magnesium Alloys for Corrosion Resistance and Antibacterial Applications".Acta Metallurgica Sinica-English Letters 26.6(2013):681-686.
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