Mg-Fe-LDO的制备及光催化降解亚甲基蓝的性能研究  

Preparation and Photocatalytic MB Degradation of Mg-Fe-LDO

作　　者：杨洋[1] 胡丽芳[1,2] 陈秀 Yang Yang;Hu Lifang;Chen Xiu(School of Chemical Engineering,Anhui University of Science and Technology,Huainan 232001,China;Institute of Environmental Friendly Materials and Occupational Health,Anhui University of Science and Technology(Wuhu),Wuhu 241000,China)

机构地区：[1]安徽理工大学化学工程学院,安徽淮南232001 [2]安徽理工大学环境友好材料与职业健康研究院(芜湖),安徽芜湖241000

出　　处：《山东化工》2021年第20期5-6,共2页Shandong Chemical Industry

基　　金：安徽理工大学环境友好材料与职业健康研究院(芜湖)科技专项(ALW2020YF09)资助。

摘　　要：本文采用水热合成法制备了镁铁层状双金属氢氧化物(Mg-Fe-LDHs),并煅烧制备了镁铁金属氧化物(Mg-Fe-LDO)。用X射线衍射仪和紫外-可见漫反射光谱仪对制备的催化剂的相组成、晶体结构和光学性能进行了表征。所有样品的光催化性能基于亚甲基蓝的降解效果进行评估。根据XRD分析,Mg-Fe-LDHs的特殊层状结构在500℃煅烧后会形成Mg-Fe-LDO。紫外-可见光谱表征结果表明,Mg-Fe-LDO对可见光的吸收范围最宽。Mg-Fe-LDHs和Mg-Fe-LDO对亚甲基蓝的光催化降解效率分别为58.5%,84%,由此可以看出Mg-Fe-LDO具有良好的光催化稳定性。In this paper,Mg-Fe layered double metal hydroxides(Mg-Fe-LDHs)was prepared by hydrothermal synthesis,and Mg-Fe-LDO were prepared by calcination.X-ray diffractometer and ultraviolet-visible diffuse reflectance spectrometer were used to characterize the phase composition,crystal structure and optical properties of all the prepared catalysts.The photocatalytic performance of all samples was evaluated based on the degradation effect of methylene blue.XRD show that the Mg-Fe-LDOs was form after calcinated at 500℃.The UV-vis characterization results show that Mg-Fe-LDO has the widest absorption range for visible light.The photocatalytic degradation efficiencies of Mg-Fe-LDHs and Mg-Fe-LDO for methylene blue are 58.5%and 71.3%,respectively,which shows that Mg-Fe-LDO has good photocatalytic stability.

关 键 词：类水滑石 吸附 亚甲基蓝 水污染 光催化 

分 类 号：X703[环境科学与工程—环境工程] O643.36[理学—物理化学]