化工学报2012，Vol.63Issue(8)：2655-2660,6.DOI:10.3969/j.issn.0438-1157.2012.08.045
羧甲基纤维素/蒙脱土纳米复合材料对刚果红染料的吸附及解吸性能
Adsorption and desorption properties for Congo red dye of carboxymethylcellulose/montmorillonite nanocomposites
摘要
Abstract
The structure of carboxymethylcellulose/montmorillonite (CMC/MMT) nanocomposites was characterized by X-ray diffraction ( XRD) , transmission electron microscope (TEM) and scanning electron microscope (SEM). The nanocomposites were prepared with a solution intercalation technique and the effects of mass ratio of carboxymethylcellulose to montmorillonite, reaction time and reaction temperature on adsorption capacity were investigated. The desorption properties were also investigated. Microscopic observation showed that carboxymethylcellulose intercalated into montmorillonite interlayer via destroying the crystalline structure of montmorillonite, and intercalated-exfoliated structure was formed in carboxymethylcellulose/montmorillonite nanocomposites. The maximum adsorption capacity of the nanocomposite for Congo red dye was as high as 50. 42 mg· g-1 using the mass ratio of carboxymethylcellulose to montmorillonite of 1 : 1 after being treated at 60℃ for 6 h. The desorption efficiency of the nanocomposite was 80. 17% using desorption agent of 0. 01 mol · L-1 NaOH after being treated by ultrasonic wave for 50 min.关键词
羧甲基纤维素/蒙脱土/纳米复合材料/吸附/解吸Key words
carboxymethylcellulose/ montmorillonite/ nanocomposite/ adsorption/ desorption分类
资源环境引用本文复制引用
赵亚红,薛振华,王喜明,王丽..羧甲基纤维素/蒙脱土纳米复合材料对刚果红染料的吸附及解吸性能[J].化工学报,2012,63(8):2655-2660,6.基金项目
国家林业公益性行业科研专项(201104004) （201104004）
国家自然科学基金项目(20867004). （20867004）
