硅藻土纳米结构铁/锌氧化物制备及As(V)吸附研究  

Preparation and Adsorption Properties of Diatomite Based Nanostructured Iron/Zinc Oxides for Removal of As(V)

作　　者：杜玉成[1] 谷恒学 李生辉 李杨[1] 牛炎 Du Yucheng;Gu Hengxue;Li Shenghui;Li Yang;Niu Yan(Key Lab of Advanced Functional Materials,Ministry of Education,Department of Materials and Manufacturing,Beijing University of Technology,Beijing 100124)

机构地区：[1]北京工业大学材料与制造学部,新型功能材料教育部重点实验室,北京100124

出　　处：《非金属矿》2020年第6期94-97,共4页Non-Metallic Mines

基　　金：国家重点研发计划项目(2017YFB0310804);宁夏回族自治区重点研发计划项目(2019BFG02032)。

摘　　要：以硅藻土为基体,ZnCl2为锌源,FeC2O4为铁源,氨水为沉淀剂,十六烷基三甲基溴化铵(CTAB)为模板剂,利用水热法,通过控制水热温度及时间在硅藻土表面制备了纳米花片状结构铁酸锌;采用X射线粉末衍射(XRD)仪、扫描电子显微镜(SEM)、透射电子显微镜(TEM)、比表面积(BET)分析仪、X射线光电子能谱(XPS)分析等技术对样品进行表征分析。制备的纳米结构ZnFe2O4呈尖晶石结构,比表面积为313 m^2/g。研究了ZnFe2O4/硅藻土样品对As(V)吸附性能,其对As(V)的最大饱和吸附容量为186 mg/g,最佳条件下As(V)吸附去除率均达99%。With diatomite as matrix,FeC2O4 as iron source,ZnCl2 as zinc source,NH3-H2O as precipitation agent,cetyl trimethyl ammonium bromide as template,nanometer flower-like zinc ferrite was prepared by hydrothermal method on diatomite surface through controlling hydrothermal temperature and time;XRD,SEM,TEM,BET and XPS were used to characterize and analyze the samples.The prepared nanostructure ZnFe2O4 has a spinel structure,the surface area is 313 m^2/g.The adsorption performance of samples for As(V)was studied,and the maximum saturation absorption capacity of As(V)was 186 mg/g,and the removal rate of As(V)was 99%under the best conditions.

关 键 词：硅藻土 纳米结构 ZNFE2O4 AS(V) 吸附 

分 类 号：TQ424.22[化学工程] X703[环境科学与工程—环境工程]