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采用软模板法,以活性炭纤维毡(ACF)为基材制备了一种有序介孔碳(OMC)活性炭纤维毡复合碳材料ACF@OMC,采用扫描电镜(SEM)和透射电镜(TEM)对其微观形貌结构进行表征,N2物理吸附脱附对其孔道结构参数进行测试,选取酸性橙Ⅱ作为模拟污染物,考察其吸附性能.结果表明:ACF@OMC材料以OMC包裹ACF纤维生长的方式结合;比表面积754m2·g-1,介孔孔容0.39cm3·g-1,平均孔径为2.9nm;其吸附性能明显优于ACF(5h达到吸附平衡),达到吸附平衡时间为3h;其吸附行为符合准二级吸附动力学方程,速率常数达0.030 3g·mg-1·min-1(R2=0.999 1),约为ACF体系的1.4倍;该材料对酸性橙Ⅱ的吸附量达到318.7mg·g-1,吸附等温线符合Langmuir模型.
ACF @ OMC, an ordered mesoporous carbon (OMC) carbon fiber mat, was prepared by soft template method using activated carbon fiber mat (ACF) as a substrate. Scanning electron microscopy (SEM) and transmission electron microscopy The microstructure of the ACF @ OMC was characterized by N2 physical adsorption and desorption, and its pore structure parameters were tested. Acid orange Ⅱ was chosen as the simulated pollutant and its adsorption performance was investigated. With a specific surface area of 754m2 · g-1 and a mesopore volume of 0.39cm3 · g-1 with an average pore diameter of 2.9nm. Its adsorption capacity was significantly better than that of ACF (adsorption equilibrium reached at 5h), and the adsorption equilibrium time was 3h. The behavior was in accordance with the quasi-second order adsorption kinetics equation with a rate constant of 0.030 3g · mg-1 · min-1 (R2 = 0.999 1), about 1.4 times that of the ACF system. The adsorption capacity of Acid Orange Ⅱ to this material was 318.7mg · G-1, the adsorption isotherm fitted the Langmuir model.