Enhanced photocatalytic activity of TiO<sub>2sub> by polydimethylsiloxane deposition and subsequent thermal treatment at 800 掳C
- 作者：Myung-Geun Jeong<sup>asup> ; Hyun Ook Seo<sup>asup> ; Kwang-Dae Kim<sup>asup> ; Young Dok Kim<sup>asup><sup> ; sup><sup>ydkim91@skku.edusup> ; Dong Chan Lim<sup>bsup><sup> ; sup><sup>dclim@kims.re.krsup>
- 关键词：Photocatalysis ; Evaporation ; polydimethylsiloxane ; Titanium Dioxide ; Powders ; Hydrophilic Interaction ; Methylene Blue
- 刊名：Thin Solid Films
- 出版年：2012
- 期刊代码：78_00406090
- 类别：ph
- 出版时间：31 May, 2012
- 卷：520
- 期：15
- 页码：4929-4933
- 文件大小：1067 K
摘要
A thin film of polydimethylsiloxane (PDMS) was coated on TiO<sub>2sub> nanoparticles (P-25, Dagussa), and surface structures of the thin films were analyzed by Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy. Furthermore, photocatalytic activity of PDMS-coated TiO<sub>2sub> samples with various annealing temperatures was determined using UV irradiation. We show that the 800 掳C-annealed sample of PDMS-coated TiO<sub>2sub> showed a two-fold higher photocatalytic activity with respect to the bare TiO<sub>2sub>. The enhanced photocatalytic activity was attributed to the greater hydrophilicity of the annealed PDMS coating.