核壳结构功能纳米材料的催化应用
2014中国功能材料科技与产业高层论坛——Core-shell nanostructures are nano particles encapsulated and protected by an outer shell that isolates the nano particles and prevents their migration and coalescence during the catalytic reactions; The synthesis and characterization of effective core-shell catalysts has been at the center of our research efforts and is the focus of this presentation; We have developed a surface-protected etching process to prepare meso-porous silica and titania shells with controllable porosity; In certain cases, we can tune catalytic reac¬tion rates by adjusting the porosity of the outer shell. We also designed and successfully applied a silica-protected calcination method to prepare crystalline shells with high surface area, using anatase titania as a model system; We achieved a high degree of control over the crystallinity and porosity of the anatase shells, allowing for the systematic optimization of their photocatalytic activity.
关键词: 功能纳米材料 核壳结构 稳定性 催化应用 2014中国功能材料科技与产业高层论坛
主讲人:教授 张桥 机构:苏州大学功能纳米与软物质研究院
时长:0:21:23 年代:2014年
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