硅酸盐通报2017，Vol.36Issue(9)：3207-3212,3219,7.
MCFs吸附茜素红S的研究
Adsorption of Alizarin Red S by MCFs
耿爱芳 1翟庆洲1
作者信息
- 1. 长春理工大学纳米技术研究中心,长春 130022
- 折叠
摘要
Abstract
Mesocellular foams ( MCFs ) silica was successfully synthesized by hydrothermal method .In this article , MCFs was used to adsorb alizarin red S and the optimum conditions of adsorption were obtained.The maximum capacity of adsorption was 3.750 mg/g.The thermodynamic properties of adsorption system were obtained from a temperature range of 293 .15-323 .15 K.The reaction enthalpy△H0 =48.038 kJ/mol>0, showed that process of the adsorption of alizarin red S by MCFs belongs to an endothermic reaction.The entropy change △S0 =243.3 J/(mol· K) >0, indicated that the adsorption of alizarin red S by MCFs is a process of increase in entropy .Over the range of the temperature , the free energy change value △G0 of adsorption reaction is less than zero ,the adsorption is a spontaneous reaction and the adsorption reaction is accompanied by physical adsorption and chemical adsorption .The process in which alizarin red S is adsorbed by MCFs accords with the dynamic quasi-two-order equation .The fitting effect of Freundlich isotherm equation was better than that of Langmuir isotherm equation , the results of adsorption accorded with the Freundlich adsorption isotherm , and the adsorption process belongs to a multiple molecular layer adsorption .关键词
茜素红S/吸附/MCFs/介孔材料Key words
alizarin red S/adsorption/MCFs/mesoporous material分类
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耿爱芳,翟庆洲..MCFs吸附茜素红S的研究[J].硅酸盐通报,2017,36(9):3207-3212,3219,7.
