介孔C／SiO2粉体的制备及对阳离子型染料的吸附  

Mesoporous C/SiO_2 Powder:Preparation and Adsorption of Cationic Dyes

作　　者：宋晓翠[1] 谷景华[1] 姚红英[2] 滕玮[3] 张跃[1] 

机构地区：[1]北京航空航天大学材料科学与工程学院,空天材料与服役教育部重点实验室,北京100191 [2]复旦大学物理系,上海200433 [3]复旦大学化学系,先进材料实验室,上海200433

出　　处：《无机化学学报》2012年第6期1239-1244,共6页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.51178017)资助项目

摘　　要：采用吸附法处理染料废水需要合适的吸附剂。利用溶剂蒸发自组装法，以甲阶酚醛树脂为碳源、介孔SiO2粉体为载体制备介孔C/SiO2粉体，表征所制C/SiO2粉体的结构，研究C/SiO2粉体对阳离子型染料亚甲基蓝和阳离子红X-GRL的吸附性能，并与相同条件下制备的非负载的多孔C粉体以及介孔SiO2载体进行比较。结果表明，介孔C/SiO2粉体的孔窗口为11-18 nm，比表面积为303 m^2·g^-1，比孔容为1.11 cm^3·g^-1；C/SiO2粉体对这两种染料吸附量均高于C粉体和SiO2载体；在pH≤10的范围内，吸附量随pH值增大而显著提高。Mesoporous C/SiO2 powder was synthesized by solvent evaporation induced self-assembly method using resol as the cabon source and mesoporous SiO2 powder as the support. The microstructure of the title powder was characterized. The adsorption of methylene blue and cationic red X-GRL on C/SiO2 powder was investigated. The adsorption capacity on the title material was compared with those on mesoporous SiO2 support and unsupported C powder synthesized under the same condition. The mesoporous C/SiO2 powder has a pore window size of 11-18 nm, a specific surface area of 303 m^2·g^-1, and a specific pore volume of 1.11 cm^3·g^-1. The adsorption capacity of methylene blue and cationic red X-GRL on C/SiO2 powder is higher than that on porous C powder or mesoporous SiO2 support. The adsorption capacity of these two dyes on C/SiO2 powder increases remarkably with the increase in pH value provided that the pH value of the system is pH≤10.

关 键 词：介孔C/SiO2 吸附 亚甲基蓝 阳离子红X-GRL 

分 类 号：O613.71[理学—无机化学] O613.72[理学—化学]