不同尖晶石型铁酸盐的吸附及光催化性能研究  

Adsorption and photocatalytic properties of different spinel ferrites

作　　者：高雯雯[1,2] 弓莹 张智芳[1] 高续春[1] 马向荣[1] 刘玲娜[1,2] Gao Wenwen;Gong Ying;Zhang Zhifang;Gao Xuchun;Ma Xiangrong;Liu Lingna(Shaanxi Key Laboratory of Low Metamorphic Coal Clean Utilization,School of Chemistry and Chemical Engineering,Yulin University,Yulin 719000,Shaanxi,China;Yulin Key Laboratory of Resource Utilization of Coal Chemical Wastes,Yulin 719000,Shaanxi,China)

机构地区：[1]榆林学院,陕西省低变质煤洁净利用重点实验室,化学与化工学院,陕西榆林719000 [2]榆林市煤化工废弃物资源化利用重点实验室,陕西榆林719000

出　　处：《工业催化》2022年第6期41-45,共5页Industrial Catalysis

基　　金：国家自然科学基金(52062047)资助项目;陕西省科技厅项目(2019SF-273);陕西省教育厅重点科学研究计划项目(重点实验室项目)(21JS043,21JS047);榆林市科技局项目(CXY-2020-002-02);榆林市高新区科技计划项目(CXY-2021-43)。

摘　　要：采用沉淀法制备不同尖晶石型铁酸盐(MFe_(2)O_(4),M=Zn、Co、Ni)材料,利用XRD、SEM、FTIR和紫外-可见漫反射等对铁酸盐材料进行表征,以邻硝基酚为目标污染物,考察不同铁酸盐材料的吸附和光催化性能。结果表明,铁酸盐对邻硝基酚的吸附量顺序为:ZnFe_(2)O_(4)>CoFe_(2)O_(4)>NiFe_(2)O_(4),铁酸盐对邻硝基酚均显示了较好的光催化降解率,其光催化活性顺序与对应的吸附量相反,其中NiFe_(2)O_(4)对邻硝基酚的降解率最大,为85.5%。最后分析了铁酸盐降解邻硝基酚光催化机理。Spinel ferrite(MFe_(2)O_(4),M=Zn,Co,Ni)catalysts were prepared by precipitation method and characterized by XRD,SEM,FTIR and UV-vis diffusion reflection.O-nitrophenol was used as the target pollutant to investigate the adsorption and photo-catalytic properties of spinel ferrites.The results showed that the adsorption capacity of spinel ferrites for o-nitrophenol is as follows:ZnFe_(2)O_(4)>CoFe_(2)O_(4)>NiFe_(2)O_(4).All spinel ferrites exhibited good photo-catalytic activity for o-nitrophenol.The trend of photo-catalytic activity of spinel ferrites is reversed to the relevant adsorption capacity,and the best decomposition efficiency reached to 85.5%on NiFe_(2)O_(4).Finally,the photocatalytic mechanism of ferrites for o-nitrophenol degradation was proposed.

关 键 词：催化化学 铁酸盐 吸附 光催化 邻硝基酚 

分 类 号：TQ426[化学工程] O643.36[理学—物理化学]