摘要
采用溶剂热法制备复合材料H_(3)PMo_(12)O_(40)/UiO-66,通过加入不同质量的三氯乙酸来调节H_(3)PMo_(12)O_(40)/UiO-66复合材料的形貌,提高对亚甲基蓝(MB)溶液的吸附.通过X射线衍射、扫描电镜、红外光谱等表征方法证明复合材料制备成功,当添加TCA为10 mmol、pH=6时,H_(3)PMo_(12)O_(40)/UiO-66的吸附效果最优,多次循环实验后,吸附量未发生明显变化,表明该材料吸附性能稳定.吸附过程符合Langmuir吸附模型和二级动力学模型,通过热力学参数发现ΔG<0和ΔH<0,证明复合材料H_(3)PMo_(12)O_(40)/UiO-66吸附MB的吸附过程属于自发放热的.
The composite material H_(3)PMo_(12)O_(40)/UiO-66 was prepared by solvothermal method.The morphology of H_(3)PMo_(12)O_(40)/UiO-66 composite material was adjusted by adding trichloroacetic acid of different quality to improve the adsorption of methylene blue(MB)solution.X-ray diffraction,scanning electron microscopy,infrared spectroscopy and other characterization methods proved that the composite material was successfully prepared.When TCA was 10 mmol and pH was 6,the adsorption effect of H_(3)PMo_(12)O_(40)/UiO-66 was the best.After many cycles of experiments,the adsorption capacity did not change significantly,which indicated that the adsorption performance of the material was stable.The adsorption process conformed to the Langmuir adsorption model and the second-order kinetic model.The thermodynamic parameters find that ΔG<0 and ΔH<0,which prove that the adsorption process of the composite material H_(3)PMo_(12)O_(40)/UiO-66 to adsorb MB is self-exothermic.
作者
赵莹鑫
胡豪
陈飘
杨水金
ZHAO Yingxin;HU Hao;CHEN Piao;YANG Shuijin(Hubei Key Laboratory of Pollutant Analysis&Reuse Technology,College of Chemistry and Chemical Engineering,Hubei Normal University,Huangshi 435002,China)
出处
《湖北大学学报（自然科学版）》
CAS
2023年第4期558-566,共9页
Journal of Hubei University：Natural Science
基金
湖北省教育厅重点科研项目(D20213102)
2022年湖北师范大学研究生创新科研项目(2022057)资助。
