锑基多元硫化物可见光光催化剂的设计、制备及降解有机污染物性能研究

项目名称： 锑基多元硫化物可见光光催化剂的设计、制备及降解有机污染物性能研究

项目编号： No.21307012

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 环境科学、安全科学

项目作者： 薛珲

作者单位： 福建师范大学

项目金额： 24万元

中文摘要： 开发高效可见光光催化材料对解决环境污染问题具有重要的科学意义和实用价值。基于p区金属(In, Ga, Sn)基硫化物具有优良的可见光光催化性能，本项目拟开展p区金属锑基多元硫化物可见光光催化降解有机污染物体系的研究。采用各种的化学合成法制备一系列具有不同组成、结构和形貌的锑基多元硫化物；研究催化剂化学组成、能带结构、晶体结构、形貌等对光催化性能的影响；详细表征催化剂的表面状态、活性物种、反应中间及最终产物、反应动力学及催化剂与光的相互作用，揭示锑基多元硫化物光催化过程的微观本质；依据密度泛函理论和半导体能带理论设计开发具有优良理化性能和高量子效率的锑基多元硫化物新型可见光光催化剂。该研究为深入理解光催化剂的组成-结构-性能之间的关系以及开发新型可见光光催化剂提供了理论和实验上的依据，对于推广光催化技术在环境治理中的应用具有重要的意义。

中文关键词： 锑基化合物；可见光；光催化；有机污染物；

英文摘要： Developing efficient visible light photocatalytic materials has important scientific significance and practical value for solving the problems of environmental pollution. Based on the high visible light photocatalytic performance of p-block metal (In, Ga, Sn)-based sulfides, photocatalytic degradation of organic pollutants under visible light irradiation on antimony-based multi-component sulfides are studied in the present item. P-block metal antimony-based multi-component sulfides with different composition, structure and morphology will be prepared via various chemistry synthesis methods. The effects of chemical composition, band structure, crystal structure, morphology on photocatalytic performance will be investigated. The surface state of catalyst, active species, reaction intermediate and final products as well as reaction kinetics, together with interaction between catalyst and light will be examined in details. The microscopic essences of antimony-based multi-component sulfides photocatalysis will be revealed. Based on density functional theory and semiconductor band theory, antimony-based multi-component sulfides as new visible-light-driven photocatalysts with excellent physical and chemical properties and high quantum efficiency will be designed and developed. This study provide a theoretical and exper

英文关键词： antimony-based compounds；visible light；photocatalytic；organic pollutants；