摘要
目的研究金属有机骨架复合材料对水溶液中亚甲基蓝(MB)吸附的性能。方法采用溶剂热法制备H_6P_2Mo_(18)O_(62)/MOF-5,并采用XRD,IR,TG,SEM等手段对其进行了表征。探讨温度、初始浓度、溶液pH值对其吸附效果的影响。结果降低温度和降低溶液的初始pH值有利于MB的吸附。结论等温吸附模型符合Langmuir等温吸附模型,动力学符合拟二级动力学,H_6P_2Mo_(18)O_(62)/MOF-5对MB的吸附是自发和放热过程。
Purposes—To investigate the adsorption performance of metal organic framework composite for methylene blue(MB)in aqueous solution.Methods—H6P2Mo18O62/MOF-5composite photocatalysts were synthesized with solvothermal method and characterized by X-ray powder diffraction pattern(XRD),fourier transform infrared spectrum(FT-IR),thermogravimetric(TG)and scanning electron micrographs(SEM).The effects of such experimental parameters as sample temperature,initial concentration and solution initial pH on H6P2Mo18O62/MOF-5have been investigated.Results—It is showed that the lower temperature and lower initial pH value were beneficial to the dye(MB)adsorption.Conclusions— The experiment data could be well described by the Langmuir equations and pseudo-sencond-order kinetic model,the MB adsorption onto H6P2Mo18O62/MOF-5was spontaneous and endothermic processes.
作者
杜晓刚
龚文朋
陈丹
杨水金
DU Xiao - gang;GONG Wen - peng;CHEN Dan;YANG Shui- jin(College of Chemistry and Chemical Engineering? Hubei Collaborative Innovation Center for Rare Meial Chemistry,Hubei Normal University,Huangshi 435002, Hubei? China)
出处
《宝鸡文理学院学报（自然科学版）》
CAS
2016年第2期27-34,共8页
Journal of Baoji University of Arts and Sciences(Natural Science Edition)
基金
湖北省自然科学基金重点项目(2014CFA131)
关键词
金属有机骨架
亚甲基蓝
吸附
metal organic frameworks
methylene blue
adsorption
