The structural and photoluminescence studies related to the surface of the TiO_2 sol prepared by wet chemical method

Baoshun Liu; Xiujian Zhao; Liping Wen

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The structural and photoluminescence studies related to the surface of the TiO_2 sol prepared by wet chemical method

机译：湿化学法制备TiO_2溶胶表面的结构和光致发光研究

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The stable anatase TiO_2 sol was prepared firstly. The crystallinity and morphology were investigated by XRD, TEM and Raman patterns. The photo-luminescence was used to study the surface electronic structure of TiO_2 sol with respect to the particle size, UV illumination, pH and electron acceptor addition. The PL spectra show that the photoinduced carriers are easy to transfer to surface in the case of small particles; the acidic environment can destroy the surface electronic structure because the surface recombination is quenched, but the bulk recombination is still clearer. The PL spectra also show that the UV illumination can obviously change surface electronic structure; the Ag~+ addition can increase electron transportation to Ag~+.

机译：首先制备了稳定的锐钛矿型TiO_2溶胶。通过XRD，TEM和Raman图案研究了结晶度和形态。利用光致发光技术研究了TiO_2溶胶的表面电子结构，包括粒径，紫外线照射，pH值和电子受体的添加。 PL光谱表明，在小颗粒的情况下，光致载流子易于转移到表面。酸性环境可破坏表面电子结构，因为表面重组被淬灭，但本体重组仍然更加清晰。 PL光谱还表明，紫外线照射可以明显改变表面电子结构。 Ag〜+的添加可以增加电子向Ag〜+的传输。

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来源
《Materials Science and Engineering. B, Solid-State Materials for Advanced Technology》 |2006年第1期|p.27-31|共5页
作者
Baoshun Liu; Xiujian Zhao; Liping Wen;
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作者单位

Key Laboratory of Silicate Materials Science and Engineering, Wuhan University of Technology, Ministry of Education, Wuhan, Hubei 430070, PR China;

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原文格式 PDF
正文语种 eng
中图分类工程材料学;
关键词
electron-hole pairs; surface electronic structure; PL spectra; TiO_2 sol;

机译：电子-空穴对;表面电子结构;PL光谱;TiO_2溶胶;

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The structural and photoluminescence studies related to the surface of the TiO_2 sol prepared by wet chemical method

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