硅酸盐学报2013，Vol.41Issue(3)：409-415,7.DOI:10.7521/j.issn.0454-5648.2013.03.23
偶联剂改性对纳米二氧化钛光催化活性的影响
Influence of Coupling Agents Modification on Photocatalysis Activity of Nano-TiO2
摘要
Abstract
In order to improve the dispersion stability and photocatalysis activity of TiO2 nano-particles, silane coupling agent and titanium coupling agent groups were grafted on the surface of TiO2 nano-particles by an alcolholysis method. The surface bonding property of the TiO2 nano-particles was characterized by Fourier transform infrared spectroscopy. The hydrophobic, content of surface hydroxyl, dispersion stability in the organic solvent and photocatalysis activity of the nano-particles were determined. The results indicate that the molecular of coupling agent are bonded on the surface of TiO2 nano-particles by chemical bonds. The TiO2 nano-particles were lipophilic, the content of surface hydroxyl decreased and the lipophilic degree improved. Also, the aggregation of the modified TiO2 nano-particles with the average size of 50 nm was reduced and the dispersion stability was improved, leading to the enhancement of the photocatalysis activity.关键词
纳米二氧化钛/偶联剂/光催化活性Key words
nano-titanium dioxide/ coupling agent/ photocatalysis activity分类
化学化工引用本文复制引用
杨平,霍瑞亭..偶联剂改性对纳米二氧化钛光催化活性的影响[J].硅酸盐学报,2013,41(3):409-415,7.
