摘要
用改进的Hummers法制备氧化石墨,在机械搅拌下,氧化石墨和壳聚糖反应,制备了氧化石墨/壳聚糖复合水凝胶吸附剂。采用傅里叶红外光谱仪、X射线粉末衍射仪、热重分析仪和比表面积孔径分析仪等仪器对水凝胶进行结构表征。用原子吸收分光光度计测定离子浓度,探究吸附温度、pH、时间和氧化石墨用量对Zn^(2+)和Pb^(2+)吸附性能的影响以及吸附动力学模型。
Graphite oxide was prepared by modified Hummers method,and graphite oxide/chitosan composite hydrogel was prepared through the reaction of graphite oxide and chitosan under mechanical agitation.The hydrogel structure was characterized by fourier transform infrared spectroscopy(FTIR),x-ray powder diffraction(XRD),thermogravimetry(tg)and surface area aperture analyzer(SA).The effects of adsorption temperature,pH,time and the amount of graphite oxide on the adsorption properties of Zn^(2+)and Pb^(2+),and the adsorption kinetic model were investigated by measuring the ion concentration with photometer.
作者
胡章记
王彦娜
梁慧锋
王晓楠
HU Zhangji;WANG Yanna;LIANG Huifeng;WANG Xiaonan(College of Chemistry and Chemical Engineering,Xingtai University,Xingtai 054001,China;Department of Chemical Engineering,Xinjiang Institute of Science and Technology,Bazhou 841000,China)
出处
《化工技术与开发》
CAS
2021年第5期9-14,共6页
Technology & Development of Chemical Industry
基金
河北省省级科技计划资助(17211226)。
关键词
氧化石墨
壳聚糖
水凝胶
吸附
graphite oxide
chitosan
hydrogel
adsorption
