Fabrication of Ag/Al(OH)3 mesoporous nanocomposite film

Title
Fabrication of Ag/Al(OH)3 mesoporous nanocomposite film
Authors
서영익이영중김대군이규환김영도
Keywords
meso porous; nano composite; Ag/Al(OH)3; film formation mechanism; In situ dispersion; Ag nanoparticles; Mesoporous surface; Alkali surface modification; Polyol process
Issue Date
2011-03
Publisher
Microporous and mesoporous materials
Citation
VOL 139, NO 1-3, 211-215
Abstract
In this study, a Ag/Al(OH)3 mesoporous nanocomposite film was fabricated for antibacterial and biomedical applications. First, a mesoporous Al(OH)3 layer was prepared by alkali surface modification of an Al substrate. The prepared Al(OH)3 layer was composed of flaky crystals woven within and covering the entire substrate surface so that the specific surface area was considerably enlarged because of voids of several tens of nanometers between the flakes. The substrate covered by the Al(OH)3 layer was immersed in a solution of ethylene glycol where polyvinylpyrrolidone (PVP) and silver nitrate (AgNO3) were dissolved for the polyol process. When the solution with the substrate was heated to 120 ℃ and maintained at that temperature up for 4 h, the Ag nanoparticles were nucleated and grown at the mesoporous Al(OH)3 layer surface, as well as in the solution as colloids. It is believed that the Al(OH)3 layer is a suitable matrix for the fabrication of mesoporous nanocomposite film.
URI
http://pubs.kist.re.kr/handle/201004/42268
ISSN
1387-1811
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KIST Publication > Article
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