活性碳纤维的电吸附性能  

Electrosorption Performance of Activated Carbon Fibers(ACF)

作　　者：吴梅芬[1] 金宇宁[1] 赵国华[1] 

机构地区：[1]同济大学化学系,上海200092

出　　处：《建筑材料学报》2011年第1期140-144,共5页Journal of Building Materials

基　　金：国家高科技发展计划(863计划)项目(2008AA06Z329);国家自然科学基金资助项目(20877058);上海市纳米基金资助项目(0852nm01200)

摘　　要：研究了活性碳纤维(ACF)表面结构、性质与其电吸附性能的相关性,并应用于有机污染物的电吸附去除.结果表明:对于S_(BET)分别为791,1 003,1 314 m^2/g的ACF虽然具有相似的孔径分布范围、相近的等电点和相同的表面微观结构,但S_(BET)和微孔体积数的不同将导致ACF物理电阻值和表面电化学阻抗差异较大,从而造成ACF对有机物苯酚的电吸附效果明显不同.而且,ACF的电吸附性能受到吸附质的性质、初始浓度和介质pH值的显著影响.The correlation of the surface structure and characteristics with the electrosorption performance of ACF was studied,and it was used for removing organic pollutants by electrosorption method.The results show that the ACFs with different BET values of 791,1 003,1 314 m^2/g have the similar range of average pore diameter,isoelectric point and the same surface microstructure.However,the different BET values and micropore volumes can cause quite differences in physical resistivity and electrochemical reaction resistance of ACF.The electrosorptive performance of the same ACF is affected by the characteristics of adsorbate,its initial concentration and pH value of medium.

关 键 词：活性碳纤维 比表面积 电吸附 苯酚 

分 类 号：O646.5[理学—物理化学]