Preparation of CeO2/CaAl-LDHs/AC and its environmental applications

被引：0

作者：

Xie, Fei ^{[1
]}

Li, Jing ^{[1
]}

Jin, Guanping ^{[1
]}

机构：

[1] School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei,Anhui,230009, China

来源：

Huagong Jinzhan/Chemical Industry and Engineering Progress | 2016年 / 35卷 / 01期

关键词：

Chromium compounds - Fluorine compounds - Dyes - Solutions - Thermogravimetric analysis - Lead compounds - Scanning electron microscopy - Fourier transform infrared spectroscopy - Field emission microscopes - Activated carbon - Carbonate minerals - Isotherms - Precipitation (chemical) - X ray diffraction - Cerium oxide - X ray photoelectron spectroscopy;

D O I：

10.16085/j.issn.1000-6613.2016.01.024

中图分类号：

学科分类号：

摘要：

Ce-doped CaAl/layered double hydroxide was coated at activated carbon (CeO2/CaAl-LDHs/AC) by co-precipitation method with the aid of ultrasound. The products was characterized by field emission scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy and thermogravimetric analysis. Flower-like layer structure CeO2/CaAl-LDHs was well distributed on the surface of active carbon with good thermostability. The adsorption of Cr(VI), Pb(II), fluoride and malachite green by CeO2/CaAl-LDHs/AC were investigated respectively in aqueous solution. All the adsorption processes agree with the pseudo-second-order kinetic model and the Langmuir isotherm model. The maximum adsorption capacity of Cr(VI), Pb(II), fluoride and malachite green are 83.06 mg/g, 131.58 mg/g, 61.20 mg/g and 420.17 mg/g at pH=7.0, 45℃ and 2 h, respectively. © 2016, Chemical Industry Press. All right reserved.

引用

页码：182 / 188