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纳米光催化材料的表界面设计与精准制备
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摘要
发展无机复合纳米结构是提高光催化效率的有效途径之一。考虑到界面结构在电荷和能量转移方面的重要性,界面工程对于光催化过程的整体效率优化是至关重要的。另一方面,无机纳米晶体在分子吸附和活化方面的特性可以通过其表面结构的调节而实现精确调控。在此报告中,我们将展示表面和界面工程在设计具有改善光催化性能的无机复合纳米结构方面的重要性。展示的范例包括:用于广谱光吸收的半导体-等离激元复合结构、具有改善电荷分离效率的金属-半导体复合结构、活化表面反应的半导体-金属有机骨架复合结构。该系列工作将为理性设计光诱导应用相关的新型材料提供一些新的视角。
To achieve high photocatalytic efficiency, there is a major trend to develop materials based on inorganic hybrid nanostructures. Interface engineering holds the promise for boosting the overall efficiency, given the key roles of interface structures in charge and energy transfer. Meanwhile, mastery over the surface of a nanocrystal enables control of its properties in molecular adsorption and activation. In this talk, I will demonstrate several different approaches to designing inorganic hybrid structures with improved photocatalytic performance via surface and interface engineering. The typical demonstrations include semiconductor-plasmonics systems for broad-spectrum light harvesting, metal-semiconductor interfaces for improved charge separation, semiconductor-MOF(metal-organic framework) configurations for activated surface reactions. It is anticipated that this series of works open a new window to rationally designing inorganic hybrid materials for photo-induced applications.
引文
[1]Bai,S.;Wang,C.;Deng,M.;Gong,M.;Bai,Y.;Jiang,J.;Xiong,Y.Angew.Chem.Int.Ed.2014,53:12120.
    [2]Bai,S.;Li,X.;Kong,Q.;Long,R.;Wang,C.;Jiang,J.;Xiong,Y.Adv.Mater.2015,27:3444.
    [3]Liu,D.;Li,L.;Gao,Y.;Wang,C.;Jiang,J.and Xiong,Y.Angew.Chem.Int.Ed.2015,54:2980.
    [4]Bai,S.;Ge,J.;Wang,L.;Gong,M.;Deng,M.;Kong,Q.;Song,L.;Jiang,J.;Zhang,Q.;Luo,Y.;Xie,Y.;Xiong,Y.Adv.Mater.2014,26:5689.
    [5]Li,R.;Hu,J.;Deng,M.;Wang,H.;Wang,X.;Hu,Y.;Jiang,H.L.;Jiang,J.;Zhang,Q.;Xie,Y.;Xiong,Y.Adv.Mater.2014,26:4783.

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