Synthesis of Gold Nanoparticle/Silica Nanostructures
A novel approach is proposed to prepare organic-inorganic composite tubular structure by mineralizing silica and/or gold nanoparticle in the LbL assembled polypeptide multilayers films. Mesoporous silica (m-SiO2) and gold nanoparticle/mesoporous silica (Au NP/m-SiO2) tubes were prepared by subsequent calcination. The LbL assembled poly-L-lysine (PLL)/poly-L-tyrosine (PLT) multilayer film within the inner pores of polycarbonate templates acts as both a mineralizing agent and template for the formation of these materials. The as-prepared mesoporous SiO2 and Au NP/m-SiO2 tubes have well-defined structures. Gold nanoparticles with size smaller than 8 nm were immobilized in the silica network and the as-prepared Au NP/m-SiO2 tubes exhibit good catalytic activity towards the reduction of p-nitrophenol. This approach may provide a facile and general method to synthesize organic-inorganic and metal-oxide nanocomposites with different composition and structures.
layer-by-layer gold nanoparticles porous silica polypeptide silica mineralization
Jeng-Shiung Jan Po-Jui Chen Yu-Han Ho
Department of Chemical Engineering National Cheng Kung University No 1, University Rd., Tainan,Taiwa Department of Chemical Engineering National Cheng Kung University No 1, University Rd., Tainan, Taiw
国际会议
11th IUMRS International Conference in Asia(第十一届国际材联亚洲材料大会 IUMRS-ICA 2010)
青岛
英文
321-325
2010-09-25（万方平台首次上网日期，不代表论文的发表时间）