锐钛矿
材料科学
无定形固体
兴奋剂
单层
化学工程
电致变色
杂原子
纳米技术
无机化学
光催化
电极
催化作用
结晶学
有机化学
物理化学
光电子学
化学
戒指(化学)
工程类
作者
Hua Li,Yih–Charng Deng,Ralf Brüning,Yuwei Liu,Jacques Robichaud,Jian Liang,Weihui Jiang,Yahia Djaoued
标识
DOI:10.1002/admi.202300497
摘要
Abstract Steaming‐assisted conversion route, a new strategy, is first adapted for the synthesis of highly crystallized anatase TiO 2 2D inverse opal (IO) monolayer films, and then to Nb‐doped TiO 2 and W‐doped TiO 2 2D IO monolayer films. Pure water, ammonia, or HCl solutions are used as a source of steaming vapor to convert dry films of amorphous TiO 2 IO, NbCl 5 /TiO 2 , and WCl 6 /TiO 2 composite IOs into anatase TiO 2 , Nb‐doped TiO 2 , and W‐doped TiO 2 IO films. This new strategy renders possible the doping of metal ions within the framework of the anatase TiO 2 IO films under low temperature and liquid‐free conditions. Further, the ordered array structure of the IO films is also effectively retained. The low steaming conversion temperature allows high dopant rates of homogeneously distributed heteroatoms, resulting in Nb doping as high as ≈34%. The thus prepared TiO 2 , Nb‐doped TiO 2 , and W‐doped TiO 2 anatase IO films are successfully used as active electrodes in the fabrication of electrochromic devices.
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