新型铌酸盐基交互积层纳米复合材料的构筑及光催化性能研究

项目名称： 新型铌酸盐基交互积层纳米复合材料的构筑及光催化性能研究

项目编号： No.21201070

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 无机化学

项目作者： 张东恩

作者单位： 淮海工学院

项目金额： 23万元

中文摘要： 在分子水平上制备特定功能的材料是二十一世纪材料科学研究的热点之一。层状化合物层与层之间的结合力较弱，在一定条件下通过剥离反应可以得到组成其基本单元的无机纳米层，剥离得到的无机纳米层不仅具有单结晶纳米级的特异物性，而且由于该单结晶层的厚度为分子级水平(约1 nm)，因而作为纳米级新物质材料组装的基本基元在功能纳米材料研究领域显示了强大的应用前景。本项目以系列层状半导体铌酸盐剥离得到的纳米层为主体，以层状锰氧化合物和层状钛酸盐剥离得到的氧化锰纳米层和氧化钛纳米层为客体，在分子级水平上实现纳米层复合生成功能性层状纳米材料。利用多种手段对交互积层纳米复合材料进行结构表征、性质测定和光催化活性评价。并通过异质结光催化作用机制、制备条件与结构、性能等系列关系的研究，以期获得具有较高光催化活性的新型纳米复合材料。

中文关键词： 无机层状化合物；金属卟啉衍生物；导电聚合物；光化学；电催化

英文摘要： One of 21 century's focuses in materials science is to design and to prepare functional materials with demanded features at a molecular level. Inorganic layered materials could be exfoliated into their single nanosheets under some appropriate condition due to the interaction between layers is relatively werker for layered materials. The exfoliated nanosheets have a molecular thickness and single crystal characteristic, which can be used as the basic unit for reassembling new functional nanomaterials. A cross-reassem-bling nanocomposite with semiconductor-semiconductor heterojunction structure can be obtained at the molecular level by a delamination-reassmbling technology which use a series of layered niobate (KTiNbO5、K4Nb6O17 and KNb3O8) as host materials and metal oxide semiconductor (TiO2 and SnO2) as guest materials in this study. The structures, morphologies and photocatalytically activities of the as-prepared nanocomposites were investigated by means of XRD, TG/DSC, SEM, UV-Vis, IR, BET, XPS and so on. It is expected that the enhanced photocatalytic activity of novel nanocomposite materials can be obtained through reseach the relations between photocatalysis mechanism of heterojunction structure, the preparation conditions, structure, and performance.

英文关键词： Inorganic layered compound；Metalloporphyrin derivatives；Conducting polymers；Photochemistry；Electrocatalytic