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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