Abstract In this paper, the high-concentration aqueous dispersion N-doped anatase TiO 2 is prepared based on low temperature non-aqueous solvent-thermal method by using TCl 4 and NH 4 Cl as titanium source and nitrogen source respectively. From TEM image, we can learn that the particle is composed of spindle-shaped particles with the size from 8 to 15 nm. According to the XRD and XPS spectra of N-doped TiO 2 , it can be seen that, during the synthesis process, N atoms permeate into the TiO 2 lattice, and the impurity level can be formed within the band gap of TiO 2 . The impurity level can extend to absorb UV and the visible light. As for N-doped TiO 2 nanoparticle of XPS spectrum, ethanol is used as solvent to form carbonaceous species on the surface of TiO 2 . The carbonaceous species in visible light can excite electrons towards the TiO 2 conduction band, so as to increase the number of electrons in the conduction band under visible light to improve the catalytic activity of TiO 2 which possesses the feature of high catalytic activity under UV–visible light.

中文翻译：

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基于低温溶剂-热法合成高水分散性氮掺杂锐钛矿型二氧化钛

摘要 本文以TCl 4 和NH 4 Cl分别为钛源和氮源，采用低温非水溶剂-热法制备高浓度水分散体N掺杂锐钛矿型TiO 2 。从 TEM 图像中，我们可以了解到该颗粒由大小为 8 至 15 nm 的纺锤形颗粒组成。根据N掺杂TiO 2 的XRD和XPS光谱可以看出，在合成过程中，N原子渗透到TiO 2 晶格中，并在TiO 2 的带隙内形成杂质能级。杂质水平可以扩展到吸收紫外线和可见光。对于XPS光谱的N掺杂TiO 2 纳米颗粒，乙醇作为溶剂在TiO 2 表面形成含碳物质。