Pan Feng, Wu Kai, Li Hexing, Xu Guoqin, Chen Wei
Education Ministry Key Laboratory of Resource Chemistry, Shanghai Normal University, Shanghai 200234 (China); Department of Chemistry, National University of Singapore, 3 science Drive 3, Singapore 117543 (Singapore); NUS Environmental Research Institute, National University of Singapore, 5 A Engineering Drive 1, Singapore 117411 (Singapore); SPURc, 1 CREATE Way, #15-01, CREATE Tower, Singapore 138602 (Singapore).
Chemistry. 2014 Nov 10;20(46):15095-101. doi: 10.1002/chem.201403866. Epub 2014 Sep 26.
Sword-like anatase TiO2 nanobelts exposed with 78% clean {100} facets were synthesized and the facet-dependent photoreactivity of anatase TiO2 was investigated. By quantitative comparison with the reference {001} facets, the {100} facets possessed about ten-times higher active sites density than that on {001} facets, resulting in higher photoreaction efficiency. After the active sites density normalization, the {100} and {001} facets exhibited distinct wavelength-dependent photocatalytic performance, attributed to the anisotropic electronic structures in TiO2 crystals.
合成了暴露有78%清洁{100}晶面的剑状锐钛矿型TiO₂纳米带，并研究了锐钛矿型TiO₂的晶面依赖性光反应活性。通过与参考{001}晶面的定量比较，{100}晶面的活性位点密度比{001}晶面高约十倍，从而导致更高的光反应效率。在活性位点密度归一化后，{100}和{001}晶面表现出不同的波长依赖性光催化性能，这归因于TiO₂晶体中的各向异性电子结构。
