LI Qiang，DU Yucheng，LI Yang，ZHANG Feng，WANG Xuekai，NIU Yan，JIN Cuixin

(Key Lab of Advanced Functional Materials, Ministry of Education,College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China)

Abstract: The flower-like and sheet-like nanostructure AlOOH-MnO₂ deposited diatomite composite absorbents were prepared via one-step hydrothermal method using AlCl₃·6H₂O as the source of aluminum, urea as precipitant, KMnO₄ as the source of manganese, (NH₄)2S₂O₈ as oxidant, and sodium dodecylbenzenesulfonate as template. The samples were characterized by SEM、TEM、XRD、BET and XPS, and the adsorption property for As(Ⅴ) was investigated. The results show that the maximum adsorption capacity for As(Ⅴ) of the samples is 90 mg/g and the specific surface area is 95 m2/g. The removal efficiency of AlOOH-MnO2 diatomite reaches 98% when initial concentration of As(Ⅴ) is 10 mg/L. The adsorption model for As(Ⅴ) is keeping with the Langmuir adsorption model.

Keywords: diatomite; nanostructure ; As(Ⅴ); adsorption

中图分类号：X703; TQ424.22                        文献标志码：A

文章编号：1008-5548(2019)04-0061-09

DOI:10.13732/j.issn.1008-5548.2019.04.009

收稿日期： 2019-01-23，修回日期：2019-02-27，在线出版时间：2019-04-29 13:58。

基金项目：国家重点研发计划项目，编号：2017YFB0310804。

第一作者简介：李强(1993—)，男，硕士研究生，研究方向为环境功能材料、非金属矿物材料。E-mail：lqiang@emails.bjut.edu.cn。

通信作者简介：杜玉成(1963—)，男，博士，教授，硕士生导师，研究方向为环境功能材料、非金属矿物材料。E-mail：ychengdu@bjut.edu.cn。