介孔材料
吸附
材料科学
化学工程
碳纤维
比表面积
微型多孔材料
多孔性
无机化学
介孔有机硅
碳化
活性炭
介孔二氧化硅
打赌理论
作者
Tian Chen,Tao Wang,Daojun Wang,Hairong Xue,Jianqing Zhao,Xiaochun Ding,Shichao Wu,Jianping He
标识
DOI:10.1016/j.materresbull.2011.05.009
摘要
Abstract Highly ordered mesoporous carbon with large accessible pores (OMC-P) was prepared by using laboratory-made poly(ethylene oxide)-b-polystyrene diblock copolymer as template via the evaporation-induced self-assembly method. The OMC-P was first used as adsorbent for removal of Cr(VI) ion from aqueous solution. Adsorption behavior was studied as a function of time, concentration of adsorbate, temperature, and pH. The kinetics of adsorption of Cr(VI) ion onto OMC-P is well fit to the pseudo-second order model. The Cr(VI) ion adsorption is favored at lower temperatures and at initial acid pH values in the equilibrium. The Freundlich and the Langmuir isotherm fit the equilibrium data satisfactorily. The influence of porosity on equilibrium adsorption capacity was investigated on three types of carbon materials, namely, OMC-P, ordered mesoporous carbon templated from amphiphilic triblock copolymer F127 (OMC-F) and commercial activated carbon (AC). The prepared OMC-P exhibits much higher adsorption performance than the other two carbons.
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