CeO_(2)多孔材料的制备及其吸附性能的研究  

Preparation and Adsorption Properties of CeO_(2)Porous Materials

作　　者：李友凤 杨国凤 潘淇 吕国岭 王世君 Li Youfeng;Yang Guofeng;Pan Qi;Lv Guoling;Wang Shijun(School of Chemistry and Chemical Engineering,Zunyi Normal University,Zunyi 563000;Guizhou Shuangxin Environmental Protection Technology Co.,Ltd.,Zunyi 563000,China)

机构地区：[1]遵义师范学院化学化工学院,贵州遵义563000 [2]贵州双鑫环保技术有限公司,贵州遵义563000

出　　处：《广东化工》2023年第2期4-6,共3页Guangdong Chemical Industry

基　　金：遵义师范学院服务地方产业革命项目(尊师CXY[2021]01号);贵州省教育厅教改项目(2020[179])。

摘　　要：采用聚合物模板法制备CeO_(2)多孔材料,利用XRD、SEM及BET对样品的结构、形貌及织构特性进行表征,实验研究了pH、Cu^(2+)的初始浓度、吸附剂用量和吸附时间等因素对其吸附性能的影响。结果表明制备的多孔材料为立方相CeO_(2),且结晶良好;其对Cu^(2+)吸附性能随吸附液pH的变化显著,pH=10.0时去除率可达到95.83%;随着初始Cu^(2+)的浓度增大,Cu^(2+)的去除率先增大后减小,最佳Cu^(2+)浓度为30 mg/L;吸附剂用量为1.5 g/L可达到最高吸附值,累计吸附量约为0.50 mg/g;且80 min即可达到吸附脱附平衡。CeO_(2)porous material was prepared by polymer template method and its adsorption capacity for copper ion was investigated.X-ray diffraction(XRD),scanning electron microscopy(SEM)and Brunauer-Emmett-Teller(BET)were used to the structure and morphology of the samples.The effects of the initial concentration of Cu^(2+),the pH,the amount of adsorption and the adsorption time on the adsorption properties were analyzed by control variable method.The results show that the prepared porous material is cubic CeO_(2)with good crystallization degree;CeO_(2)adsorbent shows good adsorption capacity for copper ions;The adsorption rate varies obviously with pH,the best adsorption pH was 10.0,and the removal rate can be achieved 95.83%;the optimal amount of adsorbent is 30 mg/L.It displays the maximum adsorption value when the dosage of adsorbent is 1.5 g/L,and the cumulative adsorption capacity is about 0.50 mg/g;The adsorption-desorption equilibrium can be reached at 80 min.

关 键 词：模板法 CeO_(2) 多孔材料 吸附剂 Cu^(2+) 

分 类 号：TQ09[化学工程]