碳硅介孔材料对水中Cr^(6+)和苯酚的吸附性能研究  

Study on the properties of mesoporous carbon-silicon materials to adsorb Cr^(6+) and phenol in water

作　　者：祝建中[1] 殷同昕 武婧 孙胜浩 丁莹[1] 郭艳华 沈烨 陈靓 俞学如[3] ZHU Jian-zhong;YIN Tong-xin;WU Jing;SUN Sheng-hao;DING Ying;GUO Yan-hua;SHEN Ye;CHEN Liang;YU Xue-ru(College of Environment,Hohai University,Nanjing 210098,China;Qinhuai River Water Conservancy Project Management Office in Jiangsu Province,Nanjing 210001,China;Jiangsu Environmental Science Society,Nanjing 210000,China)

机构地区：[1]河海大学环境学院,江苏南京210098 [2]江苏省秦淮河水利工程管理处,江苏南京210001 [3]江苏省环境科学学会,江苏南京210000

出　　处：《应用化工》2018年第3期464-468,473,共6页Applied Chemical Industry

基　　金：国家自然科学基金(51438006);中央高校业务费(2016B04614);水利部"948"项目(20165009112);国家重大仪器设备开发专项经费(2014YQ060773);江苏高校优秀学科建设工程资助项目(PAPD);江苏省环保科技创新课题(20165043212);江苏省普通高校研究生科研创新计划项目(KYZZ15_0147)

摘　　要：以正硅酸乙酯(TEOS)为硅源,十六烷基三甲基溴化铵(CTAB)为模板和碳源,用水热合成法制备介孔氧化硅(MCM-41),再加浓硫酸,经过干燥、煅烧、水洗,得到介孔碳硅复合材料。考察其对环境水体中Cr^(6+)和苯酚的吸附性能。结果表明,吸附苯酚的最适条件:30℃,pH=5,吸附时间24 h,此时饱和吸附量为7~11 mg/g;吸附Cr^(6+)的最适条件:20℃,pH=8,吸附时间24 h,饱和吸附量为15~20 mg/g。用材料吸附微污染水中Cr^(6+)和苯酚,去除率分别达到70%和79.77%。With TEOS as the silicon source,CTAB as the template and carbon source,MCM-41 was prepared by hydrothermal synthesis.Then concentrated sulfuric acid was used to obtain the materials by drying,calcining and washing.Furthermore the adsorption properties of Cr6+and phenol in environmental water are studied.The result showed that the optimum conditions for adsorption of phenol were:30℃,pH=5,adsorption time 24 h,so saturated adsorption capacity was 7~11 mg/g;the optimum conditions for adsorption of Cr6+were:20℃,pH=8,adsorption time 24 h,saturated adsorption capacity was 15~20 mg/g.At the same time,the removal rate of hexavalent chromium ions and phenol in the micro-pollution water is 70%and 79.77%respectively.

关 键 词：介孔二氧化硅 介孔碳硅复合材料 苯酚 六价铬离子 吸附 

分 类 号：TQ424.2[化学工程] TQ016.1