Chain-Like Au/TiO2 Nanoparticle Assemblies for Photocatalytic Degradation of Methylene Blue
발표자
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초록
내용
Combination of metal-metal oxide core-shell nanoparticles (NPs) have important role in photocatalysis because they can integrate plasmonic function of metal NPs and the photocatalytic function of metal oxide. In this regard, we synthesize chain-like NP assembly to investigate the effects of their morphologies on the plasmon-assisted catalytic activities. The chain-like Au NPs were synthesized by adding the amount of salt, in such a way that the number and the size of Au NPs inside the shell could be adjusted. Then, the Au@TiO2 core-shell NPs were synthesized by controlled hydrolysis of TiO2 precursor around the surface of Au NPs. The prepared Au@TiO2 NPs chain-like assemblies lead to interesting materials properties in photocatalytic reaction. By illuminating the synthesized Au@TiO2 NPs with different-colored light, we investigated the synergistic effect of Au and TiO2 on the degradation kinetics of methylene blue.