摘要
采用水热法将Keggin型磷钼酸H3PMo12O40与金属有机骨架MIL-101(Fe)复合,制得复合材料H3PMo12O40/MIL-101(Fe).通过SEM,XRD,IR和TG等表征方法,结果证实成功合成了复合材料H3PMo12O40/MIL-101(Fe).以H3PMo12O40/MIL-101(Fe)为吸附剂,以亚甲基蓝(MB)水溶液为目标染料废水.探究溶液的初始pH、温度、初始的浓度等条件对吸附剂吸附性能的影响.发现了H3PMo12O40/MIL-101(Fe)对MB的去除率明显高于两种纯物质.同时吸附机理实验证明,复合材料H3PMo12O40/MIL-101(Fe)对MB吸附过程符合Langmuir等温吸附模型以及拟二级动力学模型.热力学参数ΔΗ<0和ΔG<0表明该吸附过程是自发和放热的.
Keggin-type phosphomolybdic acid H3PMo12O40 and metal organic framework MIL-101(Fe)were compounded by hydrothermal method to obtain the composite material H3PMo12O40/MIL-101(Fe).The results were confirmed by SEM,XRD,IR and TG.Successfully synthesized the composite material H3PMo12O40/MIL-101(Fe).Taking H3PMo12O40/MIL-101(Fe)as the adsorbent and methylene blue(MB)aqueous solution as the target dye wastewater.Explore the effect of the initial pH,temperature,initial concentration of the solution,etc.on the adsorption performance of the adsorbent.It was found that the removal rate of MB by H3PMo12O40/MIL-101(Fe)was significantly higher than that of the two pure substances.At the same time,the adsorption mechanism experiment proved that the adsorption process of the composite material H3PMo12O40/MIL-101(Fe)to MB conformed to the Langmuir isotherm adsorption model and the pseudo-second-order kinetic model.The thermodynamic parametersΔΗ<0 andΔG<0 indicated that the adsorption process was spontaneous and exothermic.
作者
胡豪
冯诗娅
吴双
何云鹏
杨水金
HU Hao;FENG Shiya;WU Shuang;HE Yunpeng;YANG Shuijin(College of Chemistry and Chemical Engineering,Hubei Key Laboratory of Pollutant Analysis &Reuse Technology,Hubei Normal University,Huangshi 435002,China)
出处
《湖北大学学报（自然科学版）》
CAS
2020年第5期554-561,568,共9页
Journal of Hubei University：Natural Science
基金
湖北省自然科学基金重点项目(2014CFA131)
2020年湖北省大学生创新创业训练计划项目(202010513003)资助。
