介孔氮化碳类复合材料的辅助合成、结构调控及光催化性能研究

项目名称： 介孔氮化碳类复合材料的辅助合成、结构调控及光催化性能研究

项目编号： No.21471036

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 无机化学

项目作者： 陈萌

作者单位： 复旦大学

项目金额： 85万元

中文摘要： 能源和环境问题的解决很大程度上依赖于已有催化剂的性能改进和新催化剂的开发，介孔石墨型氮化碳（mpg-C3N4）是一种具有潜在应用前景的无机聚合物催化剂。本项目拟将首先制备富含氮碳元素有机物稳定修饰的无机纳米粒子，包括SiO2、双金属合金或核壳结构、一维半导体纳米结构等；再利用固相或溶剂热反应，对所得无机纳米粒子进行热处理，制备掺杂无机纳米粒子的石墨型氮化碳复合材料；利用稀酸或还原剂等对氮化碳复合材料进行腐蚀、溶解，还可合成介孔石墨型氮化碳复合结构，从而实现氮化碳材料的组分可调、结构可控以及半导体性能的改善，发展一种新型的石墨型有序介孔氮化碳类材料的制备技术；根据材料的掺杂组分和微观结构，研究比较mpg-C3N4及其复合材料光降解有机物的性能，探索复合材料的宏观性能与微观结构之间的对应关系，建立具有一定普遍意义的功能化氮化碳类材料的掺杂复合模型。

中文关键词： 氮化碳；纳米材料；纳米催化

英文摘要： Solving energy and environmental problems is largely dependent on the performance improvements and development of catalysts. graphite-type mesoporous carbon nitride materials(mpg-C3N4) is one of important inorganic polymeric catalyst with a wide variety of potential applications. This project intends firstly to prepare stable inorganic nanoparticles modified by nitrogen- and carbon-rich organics, including silica, bimetallic alloys or core-shell structures, and one-dimensional semiconductor nanostructures, which can regulate the semiconductor structure of nitride carbon materials, and improve its catalytic performances.Solid-phase reaction and solvothermal technique will be used to heat the resulting inorganic nanoparticles, and obtain graphitic carbon nitride composite materials doped with the inorganic nanoparticles. With the aid of oxidizing by dilute acids, or reducing by reductants, mesoporous graphitic carbon nitride composites could then be obtained by corrosion or dissolution, which can make its component adjustable, structure controllable, and improve the performance of semiconductor structures. Thus a new preparative technique to mesoporous graphitic carbon nitride composites will be developed. Based on doping component and microstructure of the obtained materials, we will make great efforts to study and compare photocatalytic properties of degradation of organic pollutant, explore the corresponding relationship between the macroscopic properties of composite materials and their microstructure, hoping to establish a universal doped model for functionalized carbon nitride based materials.

英文关键词： Carbon Nitride;nanostructured materials;Nanocatalysis