活性炭电极对溶液中NaCl的电吸附行为  

Electro-adsorption of NaCl in Solution on Activated Carbon Electrode

作　　者：段小月[1] 常立民[1] 刘伟[1] 曹宇航[2] 

机构地区：[1]吉林师范大学环境工程学院,吉林四平136000 [2]北京市通州区第三中学,北京101100

出　　处：《化工环保》2010年第4期356-359,共4页Environmental Protection of Chemical Industry

摘　　要：用活性炭、酚醛树脂和乌洛托品制备了活性炭电极。利用扫描电子显微镜(SEM)、傅立叶变换红外光谱仪(FTIR)分析了电极的表面性质,发现电极表面的黏结剂可完全碳化,且活性炭上带有大量含氧官能团;利用电化学工作站采用循环伏安法对电极进行了测试,表明电吸附是一稳定而又可逆的过程,电极电流的最大值由碳化前的0.019 8A升至碳化后的0.042 7A,双电层电容提高到碳化前的2.16倍;对NaCl的电吸附实验表明碳化后电极的电吸附率是碳化前的1.59倍,活性炭的吸附容量也由1.14mg/g提高到3.29mg/g,且活性炭电极具有良好的重复利用性。The activated carbon electrode was prepared from activated carbon,phenolic resin and methenamine.The surface properties of the electrode were characterized by SEM and FTIR.The results show that the bonding agent on the electrode surface is carbonized thoroughly,and there are numerous oxygen-containing functional groups on activated carbon.The electrode was tested by cyclic voltammetry.The testing results show that the electroadsorption is a stable and reversible process;The peak current is increased from 0.019 8 A of the un-carbonized electrode to 0.042 7 A of the carbonized electrode,and the double-layer capacitance is 2.16 times that of the un-carbonized electrode.The NaCl electroadsorption experiment results show that: The electroadsorption rate on the carbonized electrode is 1.59 times that on the un-carbonized electrode;The adsorption capacity of the activated carbon is increased from 1.14 mg/g to 3.29 mg/g;The activated carbon electrode can be regenerated and reused.

关 键 词：活性炭 电极 电吸附 氯化钠 再生 

分 类 号：X703[环境科学与工程—环境工程]