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将中草药药渣微波干燥后经碳化、KOH活化制备出具有较高比表面积的多孔炭质材料。采用比表面积及孔隙分析仪测定其N_2吸附脱附等温线;采用扫描电子显微镜、X射线衍射分析仪对介孔材料表面显微结构、及物相变化进行了表征,并分析了多孔炭材料对苯酚的吸附性能。研究结果表明,当炭碱质量比1∶4时,制备的改性多孔炭材料具有丰富的多孔结构,其比表面积达2079.25m~2,介孔率达到79.10%;多孔炭材料对苯酚的饱和吸附量达到187.5mg/g。苯酚在多孔炭材料上的吸附行为符合Langmuir吸附模型。
The Chinese herbal medicine residue was microwave-dried and then carbonized and KOH activated to prepare a porous carbonaceous material with a higher specific surface area. The adsorption and desorption isotherms of N_2 were measured by specific surface area and pore analyzer. The surface microstructure and phase transformation of mesoporous materials were characterized by scanning electron microscopy and X-ray diffraction analysis. The effects of porous carbon materials Adsorption of phenol. The results show that when the mass ratio of carbon to alkali is 1: 4, the modified porous carbon material has a rich porous structure with a specific surface area of 2079.25m 2 and a mesoporosity of 79.10%. The porosity of the porous carbon material Adsorption capacity reached 187.5mg / g. The adsorption behavior of phenol on porous carbon material accords with Langmuir adsorption model.