摘要
TiO2 nanofibers decorated with Pt and Pd nanoparticles have been synthesized and studied in various photocatalytic processes. Excellent photocatalytic behavior in the decomposition of organic dyes in water, degradation of organic stains on the surface of flexible freestanding cellulose/catalyst composite films and in generation of hydrogen from ethanol using both suspended and immobilized catalysts are demonstrated. The performance of the nanofiber-based TiO2 materials is competitive with and in some cases outperforms--their conventional nanoparticle-based counterparts. In all cases, Pd-decorated TiO2 nanoparticles and nanofibers proved to be more efficient than their Pt-based counterparts, which could be explained on the basis of the formation of nano-sized Schottky interfaces at the contacts between TiO2 and metal nanoparticles. The feasibility of forming cellulose/catalyst composites provides a novel way of utilizing photocatalyst materials in large-area coatings and freestanding films.
与磅和 Pd nanoparticles 装饰的 TiO2 nanofibers 在各种各样的 photocatalytic 过程被综合了并且学习。在水里的器官的染料的分解的优秀 photocatalytic 行为，灵活独立纤维素 / 催化剂的表面上的器官的污点的降级合成电影并且在从乙醇用的氢的产生推迟了并且使不能调动催化剂被表明。基于 nanofiber 的 TiO2 材料的表演是在某情况 outperformstheir 的竞争 withand 常规基于 nanoparticle 的对应物。在所有情况中，装饰 Pd 的 TiO2 nanoparticles 和 nanofibers 证明了比他们的基于磅的对应物更有效，它能在在 TiO2 和金属 nanoparticles 之间的接触根据缩放 nano 的 Schottky 接口的形成被解释。形成纤维素 / 催化剂 composites 的可行性提供在大区域的涂层和独立电影利用光催化剂材料的一个新奇方法。
