Adsorption of malachite green from aqueous solutions onto ordered mesoporous carbons

作者：Tian, Yong; Liu, Ping; Wang, Xiufang^*; Lin, Hansen

来源：Chemical Engineering Journal, 2011, 171(3): 1263-1269.

DOI：10.1016/j.cej.2011.05.040

• Ordered mesoporous carbon
• Malachite green
• Adsorption
• Thermodynamic

The carbon materials with well-ordered mesoporous tubular structure were synthesized, which were confirmed by transmission electronmicroscopy (TEM), Raman spectrum, small angle X-ray diffraction (XRD), and N-2 adsorption/desorption analysis. Moreover, by adjusting the ratio of furfuryl alcohol (FA) and trimethylbenzene (TMB), the structural parameters of the ordered mesoporous carbons (OMCs) could be facilely tuned. The materials synthesized were applied as a host in adsorption MG molecules. The carbon materials after the adsorption of Malachite green (MG) were also characterized by XRD and N-2 adsorption/desorption analysis. The results showed that the adsorption of MG had not greatly changed the basic ordered pore structure of the OMCs. The mixed 1,2-order equation(MOE) was suitable for the dynamic adsorption of MG on OMCs. Thermodynamic parameters of adsorption such as free energy change and enthalpy change were obtained from the equilibrium constants at different temperatures. The thermodynamic data indicated that MG adsorption onto OMCs was a spontaneous and exothermic physical process.

• 出版日期2011-7-15
• 单位河南科技学院; 广东药科大学