时 间：2017-3-16 (星期四) 10:00-12:00
杨英男，女，日本 筑波大学 生命环境研究科 终身教授，日本国家科学技术振兴会科研基金评审专家。主要从事高效生物能源生产技术的研究开发，新型环境材料，特别是可利用太阳光的高效稳定型光触媒的开发以及环境修复污染控制与生物资源的有效利用方面的科研、教学工作。研究成果先后在Advanced Functional Materials. Journal of Materials Chemistry A. Scientific Reports. ACS Applied Materials £ Interfaces. Bioresource Technology. Water Research. Chemical Engineering Journal. Journal of Hazardous Materials. Ultrasonics sonochemistry. 等国际著名学术期刊发表学术论文100多篇，国际学会邀请报告20多次、国际以及日本国内学会发表230多次；取得日本国家专利５项，曾获得2013年筑波科学技术展示会最优秀奖、2014年中日韩环境资源生命国际论坛一等奖、2015年被评为日本国立筑波大学优秀教授、2016年环境与持续发展国际大会最佳海报奖、2017医学工学筑波大会研究奖励奖等多项荣誉。
TiO2 doped with noble metals (Ag and Au) has been investigated, resulting to effectively transfer the plasmon electrons from noble metals to titanium dioxide and then improve the separation of photogenerated electron-hole pairs. Recently, many narrow band photocatalysts, such as Ag-based semiconductors combined with TiO2 have been paid more attention, as combination with these semiconductors could lead to expanding the absorption spectrum from UV to the visible light region to effectively utilize the solar light (1). More recently, a novel Ag3PO4 photocatalyst with band gap of 2.43 eV has been reported (2), possessing remarkable photocatalytic ability for organic dye degradation. Therefore, in this work a highly efficient photocatalyst P/Ag/Ag2O/Ag3PO4/TiO2 has been synthesized and followed by the characterization of SEM, TEM, XRD, EDS, XPS, UV-vis and PL respectively.
XRD, TEM and XPS results indicated that Ag, Ag2O and Ag3PO4 nanoparticles were successfully doped on TiO2. P/Ag/Ag2O/Ag3PO4/TiO2 composite showed the strong absorption in visible light region and high separation efficiency of electron-hole pairs. In summary, P/Ag/Ag2O/Ag3PO4/TiO2 photocatalyst has been successfully synthesized, showing improved photocatalytic ability which is ascribed to the plasmon resonance of metallic silver and the narrow band gap of composite photocatalyst. Therefore, as-prepared P/Ag/Ag2O/Ag3PO4/TiO2 photosensitizer has the potential for environmental and energy application under visible light.