界面调控和原位生长助催化剂的策略协同提升光催化剂同步降解抗生素/产氢性能研究

针对水环境中存在的抗生素污染问题，围绕开发“能够利用太阳能去除水中抗生素类污染物并同步产生氢气的新型光催化材料及相关理论和技术”的目标，本项目拟通过界面调控和原位生长助催化剂的策略来协同提升光催化剂同步降解抗生素/产氢性能。首先构建具有不同界面结构的II型g-C3N4-CdS异质结，然后在异质结中的CdS表面（电子聚集端，有利其表面捕获）原位生长助催化剂。在此基础上，将复合光催化剂用于水中抗生素降解并同步产氢，研究抗生素降解/同步产氢的协同效应、抗生素的降解机理，揭示复合光催化剂界面结构、物相组成等物理性质对其整体光催化活性的影响机理。揭示典型水环境因子对所制备光催化剂同步光催化降解抗生素类污染物/产氢效率的影响规律及机理。研究成果将为新型光催化材料的理性设计和可控制备、光催化过程中的协同效应研究提供新思路；同时也为实际水环境中有机污染物的治理、控制及其资源化利用提供理论依据。

Based on the target of developing novel visible light responsive photocatalysts and relative mechanism and technology for the simultaneous antibiotics degradation and hydrogen evolution. This project intended to improve the performance of photocatalysts on simultaneous antibiotics degradation and hydrogen evolution through the strategies combination of interface control and in-situ growth of cocatalysts. Firstly, type II g-C3N4-CdS heterojunctions with diffrent interface structures were prepared. Then, the phosphides were selectively deposited on the surface of CdS by a in-situ growth method. Then, the obtained photocatalysts would be used to remove antibiotics with simultaneous hydrogen evolution. The synergestic effect of simultaneous antibiotics degradation and hydrogen evolution, the degrdation pathways of different antibiotics would be investigated systematacially. The relationship between the photocatalytic activity of the photocatalysts with their surface properties and interface structures would also be exposured. The influences of environmental factors on the photocatalytic performance of simultaneous antibiotics degradation and hydrogen evolution would be investigated and illustrated. Therefore, the project would find a new way for the rational design and preparation of new photocatalyst. The results would provide a theoretical basis for the treatment, control and resource utilization of organic pollutants in the actual water environment.