Photoelectrochemical preparation of Pt/TiO2 catalysts
Photoelectrochemical preparation of Pt/TiO2 catalysts
复制标题
Pt/TiO2催化剂的光电化学制备
DOI：
10.1016/0021-9517(85)90232-5
复制
发表时间：
1985
影响因子：
7.3
通讯作者：
Shinri Sato
中科院分区：
文献类型：
--
作者：
Shinri Sato
以六氯铂酸溶液为原料，采用光电化学沉积法制备了Pt/TiO 2（Pt/TiO 2）催化剂，并用红外光谱和容量法表征了其对CO和H2的吸附性能.虽然Pt存款的分散性取决于商业来源的TiO 2，光沉积Pt然后借助于牺牲还原剂的光还原导致良好的结果，但是在还原剂存在下的Pt的光电镀倾向于降低Pt的分散性。六氯铂酸的光浸渍，然后在空气中煅烧和在H2中还原制备分散良好的Pt-TiO 2催化剂，而不管TiO 2的来源。
Pt TiO 2 (anatase) catalysts were prepared by the photoelectrochemical deposition of Pt from hexachloroplatinic acid solution, and their properties for CO and H 2 adsorption were characterized by infrared spectroscopic and volumetric methods. Although the dispersion of Pt deposit depends on the commercial source of TiO 2, the photodeposition of Pt followed by photoreduction with the aid of a sacrificial reducing agent leads to a good result, but the photoelectroplating of Pt in the presence of the reducing agent tends to lower Pt dispersion. The photoimpregnation of hexachloroplatinic acid followed by calcination in air and reduction in H 2 prepares well-dispersed Pt TiO 2 catalysts irrespective of the source of TiO 2.