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Synthesis of Au nanoparticles supported on metal oxides (H3PMo12O40 and TiO2) by PS-PVP block copolymer encapsulation method

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Abstract

Au supported on metal oxides (P-25, HPA) was successfully synthesized by PS-PVP block copolymer encapsulation method. The size of nanoparticles was strongly dependent on calcination conditions (time and temperature). The particle size was also controlled by selection of the appropriate length of PVP part in block copolymer. When particulate gold was doped on the surface of P-25, it strongly improved visible light absorption by plasma resonance. Compared with pure TiO2, Au supported on P-25 demonstrated much higher photocatalytic activity for acetaldehyde decomposition under visible light illumination. The enhanced photocatalytic activity could be attributed to the increase of visible light absorption and catalytic activity of nanoparticulate Au.

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Correspondence to Sung-Hyeon Baeck.

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Kim, GP., Jung, YS., Yoon, SB. et al. Synthesis of Au nanoparticles supported on metal oxides (H3PMo12O40 and TiO2) by PS-PVP block copolymer encapsulation method. Macromol. Res. 15, 693–696 (2007). https://doi.org/10.1007/BF03218952

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  • DOI: https://doi.org/10.1007/BF03218952

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