Department of Chemistry and Nano Science, Ewha Womans University, 11-1 Daehyun-dong, Seodaemun-gu, Seoul 120-750, Korea.
Chemistry. 2011 Jan 10;17(2):540-5. doi: 10.1002/chem.201001802. Epub 2010 Nov 9.
Hybrid Pt/TiO(2) nanostructures with diverse morphologies from nanodot, nanowire to mesoporous structures were obtained by a one-step synthesis based on block copolymer self-assembly. The structural transformation was easily tuned by controlling the relative amount of TiO(2) sol-gel precursor to poly(styrene-block-ethylene oxide) diblock copolymer (PS-b-PEO). These Pt/TiO(2) nanocomposites were utilized as photocatalysts with enhanced activity via synergistic coupling. Key parameters including the amount of TiO(2), types of morphology of photocatalysts, and the platinization of TiO(2) discussed in this study affected photocatalytic performance given that the hybrids were well-dispersed in nanopatterned configurations.
通过基于嵌段共聚物自组装的一步合成，得到了具有从纳米点、纳米线到介孔结构等不同形态的混合 Pt/TiO(2)纳米结构。通过控制 TiO(2)溶胶-凝胶前体与聚苯乙烯-嵌段-聚环氧乙烷（PS-b-PEO）两嵌段共聚物的相对用量，很容易实现结构的转变。这些 Pt/TiO(2)纳米复合材料作为光催化剂，通过协同耦合作用，具有增强的活性。本研究讨论了 TiO(2)的用量、光催化剂形态的类型以及 TiO(2)的铂化等关键参数，由于这些混合材料在纳米图案化配置中得到了很好的分散，因此这些参数影响了光催化性能。
