石墨烯@类水滑石对水中抗生素/Cr(VI)复合污染物的协同去除机制研究

项目名称： 石墨烯@类水滑石对水中抗生素/Cr(VI)复合污染物的协同去除机制研究

项目编号： No.51509093

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 其他

项目作者： 黄柱坚

作者单位： 华南农业大学

项目金额： 20万元

中文摘要： 针对目前水体中抗生素/重金属复合污染问题，本项目以水中典型抗生素/Cr(VI)复合污染为研究对象，拟制备一系列的石墨烯@类水滑石材料来高效协同去除复合污染物。申请者前期探索研究中发现，石墨烯与类水滑石复合后能高效吸附有机污染物和Cr(VI)，同时Cr(VI)的存在能有效促进有机物的自然光催化降解。本项目将结合吸附、光催化、再生性实验和现代谱学等手段，重点研究石墨烯@类水滑石材料对水中抗生素/Cr(VI)的竞争吸附特性、自然光下同步去除机制、界面反应特征以及材料循环再生性能，实现自然光下协同去除水中抗生素/Cr(VI)复合污染物和材料循环利用的目标。研究成果将对同步修复抗生素/重金属复合污染具有重要理论意义与实际价值，同时为认识自然光下抗生素/重金属复合污染物的水-矿物微界面反应特征和水体复合污染的调控规律提供新的理论与实验依据。

中文关键词： 吸附；光催化；协同作用；界面反应；循环再生

英文摘要： Based on current issue of combined pollution of antibiotics and heavy metal, this proposal intends to synthesize a series of graphene@layered double hydroxides (LDHs) composites to effectively remove the combined pollutants from water. The preliminary exploration by the applicant found that the graphene@LDHs composites could efficiently adsorb organic pollutants and Cr(VI), and the presence of Cr(VI) promotes significantly the photocatalytic degradation of organic pollutants under visible light. The proposal, combining the experiment of adsorption, photocatalysis, cyclic regeneration and the technology of spectroscopy, focuses on the study of the competitive adsorption behavior of antibiotic/Cr(VI), the simultaneous removal mechanism under visible light, interfacial reaction feature and the recycling performance of the composites, the aim of which is to find the suitable and reusable catalyst for treatment of antibiotic/Cr(VI) combined pollutants and reveal the underlying removal mechanism. The research findings would further our understanding of the interfacial reaction feature between combined pollutants and minerals under sunlight, and provides new theoretic and experimental basis for the control of antibiotic/Cr(VI) combined pollutants in water.

英文关键词： adsorption;photocatalysis;synergistic effects;interfacial reaction;cyclic regeneration