|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
|Source Publication||Acta Metallurgica Sinica-English Letters
|Abstract||Contamination 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.|
; 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.
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.
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.
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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