碳、氮和硫掺杂二氧化钛纳米材料可见光吸收特性的电子起源
The electronic origin of the visible-light absorption properties of C-, N- and S-doped TiO2 nanomaterials.
作者信息
Chen Xiaobo, Burda Clemens
机构信息
Center for Chemical Dynamics & Nanomaterials Research Department of Chemistry, Case Western Reserve University, Cleveland, Ohio 44106, USA.
出版信息
J Am Chem Soc. 2008 Apr 16;130(15):5018-9. doi: 10.1021/ja711023z. Epub 2008 Mar 25.
The origin of the visible-light absorption of main-group element (C, N, S) doped TiO2 nanostructures is investigated via diffuse reflectance and valence band X-ray photoelectron spectroscopy. The synthesized C-, N-, and S-doped titania nanomaterials show an increased electron density of states above the valence band of TiO2, which explains the red-shifted light absorption of these potential photocatalysts and simultaneously suggests a lowered potential as photooxidants compared to Degussa P25 TiO2.
通过漫反射和价带X射线光电子能谱研究了主族元素（碳、氮、硫）掺杂的二氧化钛纳米结构可见光吸收的起源。合成的碳、氮和硫掺杂的二氧化钛纳米材料在二氧化钛价带上方显示出增加的态电子密度，这解释了这些潜在光催化剂的红移光吸收现象，同时表明与德固赛P25二氧化钛相比，其作为光氧化剂的电位降低。
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