氧化铜/二氧化硅多孔复合材料的制备及其对亚甲基蓝的吸附性能  

Preparation of Copper Oxide-Silica Porous Composites and Its Adsorption of Methylene Blue

作　　者：吴中正[1] 朱维菊[1] 王冬梅[1] 李村[1] 吴振玉[1] 

机构地区：[1]安徽大学化学化工学院,合肥230601

出　　处：《应用化学》2014年第9期1089-1095,共7页Chinese Journal of Applied Chemistry

基　　金：安徽省高校自然科学研究项目(KJ2009A103;KJ2013A013);安徽省自然科学研究项目(11040606M33)~~

摘　　要：采用聚乙二醇(PEG)为模板,通过溶胶凝胶法-水热法制备出CuO/SiO2多孔复合材料,使用FTIR、HRTEM、XRD和BET等技术手段对目标产物进行了表征;研究添加CuO质量及反应温度等反应条件对复合材料的孔结构特征的影响。用目标产物作为吸附材料,研究了其对有机染料亚甲基蓝的吸附性能,结果表明,CuO/SiO2多孔复合材料对亚甲基蓝具有良好的吸附效果,尤其是含CuO质量分数为15%的样品在用量0.015 g、体系pH=9、搅拌时间为2 h的条件下,对10 mL亚甲基蓝(4 mg/L)的去除率最高可达97.17%。对吸附的过程和机理进行了初步探讨。Mesoporous silica and its copper oxide doped composite materials were synthesized by sol-gel and hydrothermal methods, using polyethylene glycol（PEG） as template. The target products were characterized by FTIR, HRTEM, XRD, BET and so on. The influences of reaction condition, such as copper oxide quality and reaction temperature, on porous structure were investigated in details. The samples used as adsorption material for adsorption of methylene blue（MB） in wastewater were studied. CuO/SiO2 mesoporous oxide composite has good absorbability of MB. The maximum removal rate reaches 97.17% for 10 mL of 4 mg/L MB solution at pH 9 in the presence of 0.015 g sorbent. The process and mechanism of adsorption were also studied.

关 键 词：溶胶凝胶法-水热法 复合材料 多孔材料 吸附 

分 类 号：O635.2[理学—高分子化学]