论文摘要
Fe-Al（hydr）oxide nano-/micro-particles were well grown and dispersed on a wheat straw template, which was characterized by a scanning electron microscope（SEM） with energy-dispersive X-ray spectroscopy（EDS）, X-ray diffraction（XRD）, and a vibrating sample magnetometer（VSM）. The adsorption mechanism of the biomass-based Fe-Al（hydr）oxide nanocomposite was studied by the adsorption isotherms, which followed the Langmuir model better than the Freundlich and Temkin models. In particular, a synergistic adsorption by the mixed Fe-Al（hydr）oxide nano-/micro-particles based on the wheat straw was found, with higher maximum adsorption capacity（Q0） than that of the material containing only Fe3O4 or Al（OH）3 nano-/micro-particles, which was most obvious when the mole ratio of Fe to Al was 1:1. The degree of this unusual effect was reasonably determined by the departure between the experimental and calculated maximum adsorption capacity（Q0-Q0（cal））, which showed that the synergistic effect was most pronounced when the mole ratio of Fe to Al was approximately 1:1. The good adsorption capacity of the mixed Fe-Al（hydr）oxide nano-/micro-particles and the good dispersity by the wheat straw matrix were combined in the biomass-based Fe-Al（hydr）oxide nanocomposite. The nanocomposite material showed high adsorption capacity for both fluoride（F-） and arsenic（As（III） and As（V））, and had the advantage of magnetic separation by tuning its compositions.
论文目录
文章来源
类型: 期刊论文
作者: DaYong Huang,BoXuan Li,Min Wu,Shigenori Kuga,Yong Huang
来源: Paper and Biomaterials 2019年02期
年度: 2019
分类: 工程科技Ⅰ辑
专业: 有机化工,材料科学
单位: National Engineering Research Center of Engineering Plastics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences,University of Chinese Academy of Sciences
基金: supported by the National Natural Science Foundation of China(No.51472253),National Key Project of Research and Development Plan(2016YFC1402500),Chinese Academy of Sciences Visiting Professorships
分类号: TQ424;TB383.1
页码: 20-31
总页数: 12
文件大小: 1787K
下载量: 6