氧化石墨烯对抗生素-重金属污染吸附效应及机理的研究  

Study on Adsorption Effect of Antibiotic-Heavy Metal by Graphene Oxide(GO) and Its Mechanism

作　　者：欧阳科[1] 谢珊[1] 王海 李秋华[1] 柴晓晴 韩昌福 

机构地区：[1]广东省五邑大学化学与环境工程学院,广东江门529020 [2]武汉市环境保护科学研究院,湖北武汉430015 [3]北京建筑大学,北京100044

出　　处：《水处理技术》2017年第12期47-50,56,共5页Technology of Water Treatment

基　　金：国家自然科学基金项目(51308421);国家自然科学基金(51508420);广东省自然科学基金(2015A030313641);广东省自然科学基金(2017A030313319);广东省教育厅特色创新项目(2014KTSCX133);广东省高等学校优秀青年教师培养计划(3211700203);江门市科技计划(201409);五邑大学青年科学基金项目(2014ZK03);广东省"千百十"人才培养计划(201406)

摘　　要：氧化石墨烯材料具有吸附能力强、耐酸碱等优点,能高效去除水体中各类污染,但针对抗生素-重金属污染类型报道较少。采用了一种改良Hummers法制备GO,采用SEM、TEM、FTIR、XRD和BET等方法进行表征,结果表明制备的GO比表面积较大,表面富含各类含氧官能团。研究了GO对水体复合污染的去除效果,结果表明去除效果较好,单独吸附时,对盐酸四环素的吸附显著强于Cr(VI)。共吸附时,两者之间存在相互抑制效应,且TC对Cr(VI)的吸附抑制要强于Cr(VI)对TC的吸附抑制,分析了其吸附机理,GO对TC吸附的主要作用π-π共轭作用,而GO对Cr(VI)吸附机理主要是络合吸附,且GO对TC的共轭吸附作用强于对Cr(VI)的络合吸附。Graphene oxide （GO） material have stronger adsorption capacityand with acid and alkali resistance, which could removal various pollutants in water efficiently, but antibiotic-heavy metal removal report was less. The GO was prepared by modified Hummers method in this paper, and it was characterized by SEM, TEM, FTIR, XRD and BET. The results showed that, the prepared GO have large specific surface area and rich kinds of oxygen-containing functional group in the surface. The removal effect of combined pollutants in water by GO was studied and removal efficiency was good. In the single adsorption, the maximum adsorption capacity of tetracycline hydrochloride （TC） and Cr （VI） was 69.55 mg/g and 13.37 mg/g respectively.In co-adsorption, TC and Cr（VI） inhibited each other, and the adsorption inhibition of TC for Cr（VI） was stronger than Cr（VI） for TC. The adsorption mechanism was analyzed, the main influence of TC adsorption on GO was π-π interactions and the main influence of Cr（VI） adsorption on GO was complex adsorption. The results also showed that TChad a greater impact on GO adsorption performance than Cr（VI）.

关 键 词：氧化石墨烯 吸附 盐酸四环素 六价铬离子 

分 类 号：TQ424[化学工程]