环境工程学报2012，Vol.6Issue(11)：3975-3980,6.
不同改性多壁碳纳米管对Cr^3＋的吸附性能
Adsorption properties of Cr~(3+) on multiwall carbon nanotubes modified by different chemical methods
摘要
Abstract
Using catalytic splitting decomposition method,multiwalled carbon nanotubes(MWCNTs) were prepared and followed by modification via different chemical reagents.The physicochemical properties and adsorption properties of Cr3+ on MWCNTs modified by different chemical methods were investigated.The porosity of MWCNTs was uniform.The outside diameter and length were 30~50 nm and 0.5~2 μm,respectively.Large amount of oxygenous functional groups was introduced onto the surface of MWCNTs by chemical modification.The adsorption kinetics curves of Cr3+ on unmodified MWCNTs and the MWCNTs modified by H2SO4,HNO3 or H2SO4-HNO3 could be well correlated by Langergren kinetic adsorption model.Their adsorption isotherms for Cr3+ could be well correlated by Freundlich model.Increase of both temperature and pH value were helpful for Cr3+ adsorption on chemical modified MWCNTs.关键词
多壁碳纳米管/化学改性/Cr3＋/吸附Key words
multiwalled carbon nanotubes/chemical modification/Cr3+/adsorption分类
资源环境引用本文复制引用
崔春月,郑庆柱,杨文方..不同改性多壁碳纳米管对Cr^3＋的吸附性能[J].环境工程学报,2012,6(11):3975-3980,6.基金项目
国家自然科学基金资助项目 （）
青岛农业大学博士基金资助项目 （）
