Cu-BTC/氧化石墨烯复合材料对刚果红的吸附特性  

Adsorption Characteristics of Metal-Organic Framework/Graphene Oxide Composites on Congo Red

作　　者：王璇[1] 贾荣畅[2] 曹晓强[1] 郭琳[3] 李琳[3] 胡术刚[1] 吕宪俊[3] WANG Xuan;JIA Rongchang;CAO Xiaoqiang;GUO Lin;LI Lin;HU Shugang;LYU Xianjun(College of Safety and Environmental Engineering,Shandong University of Science and Technology,Qingdao 266590,China;Chemical Technology Academy of Shandong Province,Qingdao University of Science and Technology,Jinan 250014,China;College of Chemical and Biological Engineering,Shandong University of Science and Technology,Qingdao 266590,China)

机构地区：[1]山东科技大学安全与环境工程学院,山东青岛266590 [2]青岛科技大学山东化工研究院,山东济南250014 [3]山东科技大学化学与生物工程学院,山东青岛266590

出　　处：《环境科学与技术》2019年第12期45-52,共8页Environmental Science & Technology

基　　金：国家自然科学基金项目(51204104,51474140,51674161);山东科技大学访问学者支持计划以及山东科技大学“群星”计划(QX2018M43);山东省研究生导师指导能力提高计划(SDYY18080);煤炭加工与高效洁净利用教育部重点实验室开放基金。

摘　　要：文章采用溶剂热合成法制备出了金属有机骨架(MOF)1,3,5-均苯三羧酸铜,即Cu-BTC,然后将Cu-BTC与氧化石墨烯(GO)进行复合制备Cu-BTC/GO复合材料。利用扫描电子显微镜(SEM)、X射线衍射仪(XRD)、红外光谱(FT-IR)、BET分析仪对材料进行了表征,并研究了复合材料对阴离子染料刚果红(CR)的吸附特性。XRD谱图显示MOF复合材料具有较高的结晶度。SEM表征证实了MOF在GO表面实现了成功生长。复合材料对CR的去除率大于单一MOF的去除率,吸附过程符合准2级动力学和Langmuir吸附等温线模型,吸附容量达到1491.6 mg/g。总的来说,Cu-BTC/GO可以作为染料废水处理的优良候选材料。Metal-organic framework(MOF)1,3,5-p-benzenetricarboxylate(Cu-BTC)was prepared by solvothermal synthesis.The Cu-BTC/GO composite was then prepared by combining Cu-BTC with graphene oxide(GO).The materials were characterized by scanning electron microscopy(SEM),X-ray diffraction(XRD),infrared spectroscopy(FTIR)and BET analyzer.The adsorption characteristics of the composite material to the anionic dye Congo red(CR)were studied.The XRD spectrum shows that the MOF composite has a high degree of crystallinity.SEM characterization confirmed that MOF achieved successful growth on the GO surface.The removal rate of CR by composites is greater than that of single MOF.The adsorption process conforms to quasi-second-order kinetics and Langmuir adsorption isotherm model,and the adsorption capacity reaches 1491.6 mg/g.In general,Cu-BTC/GO can be used as an excellent candidate for dye wastewater treatment.

关 键 词：金属有机骨架 氧化石墨烯 吸附 刚果红 

分 类 号：X592[环境科学与工程—环境工程]