100-Fold Enhancement of Charge Transport in Uniaxially Oriented Mesoporous Anatase TiO2 Films
Ke Li[a], Jie Liu[a], Xia Sheng[a], Liping Chen[a], Tao Xu[b], Kai Zhu[c], and Xinjian Feng*[a]（封心建）
[a] College of Chemistry, Chemical Engineering and Materials Science，
Soochow University, Suzhou 215123 (P.R. China)
[b] Department of Chemistry and Biochemistry Northern Illinois ，University, DeKalb, Illinois 60115 (USA)
[c] National Renewable Energy Laboratory，15031 Denver West Parkway Golden, Colorado 80401 (USA)
Chem. Eur. J. 2018, 24, 89--92
Mesoporous semiconductor films are of considerable interest for applications in photoelectrochemical devices, however, despite intensive research till now, their charge transport properties remain significantly lower than their single-crystal counterparts. Herein, we report a novel low-temperature template-free technique for growing high surface area mesoporous anatase TiO2films with a preferred [001] crystalline-orientation on FTO-coated glass substrate. Compared to mesoporous films that comprised of randomly oriented crystallites, the uniaxial orientation enables a 100-fold increase in the rate of electron transport. The uniaxially oriented mesoporous anatase TiO2films exhibit should greatly facilitate the development and application of photoelectrochemical and electrochemical devices.
链接：http://onlinelibrary.wiley.com/doi/10.1002/chem.201704944/abstract