摘要
采用一种简便新方法制备了氧化石墨烯/二氧化硅(GO/SiO_(2))复合纳米吸附剂,用傅里叶红外光谱(IR)和X射线衍射(XRD)进行了表征。研究了GO/SiO_(2)复合纳米材料对铬离子(VI)吸附性能,采用动力学分析,等温线模型评价了其吸附过程。结果表明:在pH值=4时,GO/SiO_(2)复合纳米材料对Cr(VI)最大吸附量为181.81 mg/g,其吸附过程符合准二级动力学和Langmuir等温模型。
Graphene oxide/silica(GO/SiO 2)was prepared and characterized by Fourier infrared spectroscopy(IR)and X-ray diffraction(XRD).The adsorption performance of Cr(VI)ions by GO/SiO 2 composite nanomaterials was studied,and the adsorption process was evaluated by kinetic analysis and isotherm model.The results show that at pH=4,the maximum adsorption capacity of GO/SiO 2 composite nanomaterials to Cr(VI)is 181.81 mg/g,and the adsorption process to Cr(VI)complies with the quasi-secondary kinetic model and Langmuir isotherm model.
作者
吴新华
肖洁
刘久逢
刘军
Wu Xinhua;Xiao Jie;Liu Jiufeng;Liu Jun(Hunan Chemical Vocational Technology College,Zhuzhou 412000,China)
出处
《山东化工》
CAS
2023年第12期52-54,58,共4页
Shandong Chemical Industry
基金
湖南省教育厅科学研究项目“氧化石墨烯表面印迹镉离子磁性材料的制备及其吸附性能研究”(20C0678)。