An electroless-plating-like solution approach for the preparation of PS@TiO2@Ag core–shell spheres |
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Authors: | Chao Wang Daichuan Ma Xinsheng Li Daibing Luo Liangzhuan Wu |
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Institution: | College of Chemistry, Sichuan University, No. 29, Wangjiang Road, Wuhou District, Chengdu 610064 P. R. China ; Analytical & Testing Center, Sichuan University, No. 29, Wangjiang Road, Wuhou District, Chengdu 610064 P. R. China.; College of Computer Science, Sichuan University, No. 29, Wangjiang Road, Wuhou District, Chengdu 610064 P. R. China ; Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190 P. R. China, |
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Abstract: | PS@TiO2@Ag spheres with triple-level core–shell nanostructures were prepared via a versatile coating procedure based on an electroless-plating-like solution deposition (EPLSD) method. A peroxo-titanium-complex (PTC) aqueous solution was used as the precursor to react with an aniline monomer in the EPLSD preparation. Aniline plays an important role in the TiO2 layer anchoring process through the swollen effects of the PS cores. As extended, peroxo-metal-complex (PMC) with the d0 configuration can be introduced onto PS spheres to form varieties of PS@metal oxide core–shell structures by this method under mild conditions. Ag layers were then modified onto the PS@TiO2 spheres via the photocatalytic method. By the extraction of the PS cores, hollow TiO2 and TiO2@Ag spheres could be obtained. The photochemical degradation of methylene blue (MB) under UV light irradiation was performed on the composite nanostructures.PS@TiO2@Ag spheres with a core–shell nanostructure were prepared by electroless-plating-like solution deposition (EPLSD) method, which can be alternatively extended to prepare PS@metal(1) oxide@metal(2) composite spheres and their relative hollow spheres. |
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