介孔g-C3N4包覆ZnO复合光催化剂的制备及光催化稳定性研究

项目名称： 介孔g-C3N4包覆ZnO复合光催化剂的制备及光催化稳定性研究

项目编号： No.51502081

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 一般工业技术

项目作者： 刘海瑞

作者单位： 河南师范大学

项目金额： 21万元

中文摘要： 光催化技术是解决环境污染和能源危机的最有效途径之一。ZnO作为一种高效、廉价、无毒、易制备的光催化材料，已受到国内外学者的广泛关注。但是ZnO在紫外线照射下极易被光腐蚀，这一特点严重阻碍了它的利用，本研究即为针对如何提高ZnO材料的光催化稳定性、有效利用太阳能等问题，设计合成一种由介孔石墨相氮化碳（mpg-C3N4）包覆ZnO所得的核壳结构ZnO@mpg-C3N4复合光催化材料；研究mpg-C3N4的介孔结构、含量以及核壳厚度对ZnO@mpg-C3N4复合物光催化活性和稳定性的影响；然后将Ag纳米颗粒加入ZnO中，然后再用mpg-C3N4对其进行包覆从而制备出ZnO@mpg-C3N4/Ag复合物，最后通过对两种光催化材料的微观结构、光催化活性及稳定性的研究对比，找出一种更高效、更稳定的光催化材料，同时探明影响其催化活性及稳定性的相关因素。

中文关键词： 复合材料；氧化锌；介孔石墨相氮化碳；核壳结构；光催化稳定性

英文摘要： Photocatalytic technology is considered to be one of the most effective ways to solve environmental pollution and energy crisis. ZnO materials, as a kind of high efficient; non-toxic; easy preparation, has received extensive attention in the world. However, photocorrosion significantly limits the applications of ZnO photocatalysts, in order to improve the photocatalytic stability and harness solar energy of ZnO materials, this project puts forward various suggestions with mesoporous graphite-like carbon nitride (mpg-C3N4) coated ZnO to form the core-shell structure ZnO@mpg-C3N4, and study the effect of mesoporous structure, content and thickness of coated mpg-C3N4 on photocatalytic activity and stability of ZnO@mpg-C3N4 composites. Then ZnO@mpg-C3N4/Ag composites were fabricated by added Ag nanoparticles in ZnO@mpg-C3N4 composites. Finally, by compared the microstructure, photocatalytic activity and stability of the composites, it is try to found Zno-base composites with perfect photocatalytic activity and stability.

英文关键词： composites;zinc oxide;mesoporous graphite-like carbon nitride ;core-shell structure;photocatalytic stability