基于氧化石墨烯和亚氧化钛的纳米复合材料用于脱盐的研究  

Graphene oxide/titanium suboxide-based nanocomposites for desalination

作　　者：郑鹏坤 王黎[1] 余杨 ZHENG Peng-kun;WANG Li;YU Yang(School of Resources and Environment Engineering,Wuhan University of Science and Technology,Wuhan 430081,China)

机构地区：[1]武汉科技大学资源与环境工程学院,湖北武汉430081

出　　处：《现代化工》2022年第7期176-181,共6页Modern Chemical Industry

基　　金：湖北省重大技术创新项目(2019ACA152)。

摘　　要：以不同质量比的石墨烯(GO)与亚氧化钛为原料制备复合电极,并通过对比复合材料的形貌结构及其电化学特性选择出最适合的质量比;再将复合电极制作成电容去离子脱盐装置进行吸附实验。通过X射线衍射、红外光谱、循环伏安曲线以及电化学电阻抗等对其进行表征,结果表明,m(GO)∶m(亚氧化钛)∶m(聚乙烯醇)=4.9∶2.1∶3时,其比电容量为100.76 F/g,比表面积为247.06 m^(2)/g,吸附量为13.78 mg/g。复合材料之所以表现出良好的脱盐性能,是因为GO和亚氧化钛对Na^(+)吸附的协同作用。Composite electrodes are prepared from graphene oxide(GO)and titanium suboxide under different mass ratios.The most suitable mass ratio is determined through comparing the morphology and electrochemical characteristics of the composite electrodes prepared.The composite electrodes is used in constructing a capacitive deionization desalination device for adsorption experiments.The composite electrodes are characterized through X-ray diffraction,infrared spectroscopy,cyclic voltammetry curve,electrochemical impedance and other measurements.It is concluded that the specific capacitance of the electrode can reach 100.76 F·g^(-1),the specific surface area can reach 247.06 m^(2)·g^(-1),and the adsorption capacity can reach 13.78 mg·g^(-1) when the mass ratio of GO:titanium suboxide:polyvinyl alcohol is 4.9:2.1:3.The good desalination performance is due to the synergistic adsorption effect of GO and titanium suboxide to Na^(+).

关 键 词：电容去离子 GO 亚氧化钛 复合材料 脱盐 

分 类 号：X703[环境科学与工程—环境工程]