吸附条件对活性碳纤维氧化还原吸附钯的影响  

EFFECTS OF ADSORPTION CONDITIONS ON REDOX ADSORPTION OF ACTIVATED CARBON FIBER TOWARDS Pd^(2+)

作　　者：王强[1] 黄文杰[2] 符若文[2] 陆耘[2] 曾汉民[2] 

机构地区：[1]中山大学材料科学研究所,广州市510275 [2]中山大学

出　　处：《材料研究学报》1998年第1期87-90,共4页Chinese Journal of Materials Research

基　　金：中山大学前沿基金;广东省重点项目

摘　　要：研究了吸附条件对粘胶基活性碳纤维VACF氧化还原吸附Pd2+的影响结果表明Pd2+的初始浓度、固／液比、吸附液的pH值，以及吸附温度都明显影响VACF吸附Pd2+的数量.用NaOH或NaAc来调节pH值，会出现一个吸附量最大的最佳pH值；而用NH3·H2O来调节pH值，则只能发生物理吸附.The effects of adsorption conditions, which influence upon the redox adsorption of activated carbon fiber (VACF) towards Pd2+, were systematically investigated. The experimental results indicated that the adsorption capacity of VACF towards Pd2+ significantly depended on the concentration of Pd2+, the ratio of solid/liquid, the pH value of adsorption solution and temperature. The adsorption amount and the adsorption rate increased with the increase of concentration of Pd2+ and the increase of ratio of solid/liquid, respectively. An optimum PH with the most adsorption amount adjusted by NaOH or NaAc appeared. But the adsorption field of VACF for Pd2+ was wider in the case of NaAc than in the case of NaOH. If the PH value of adsorption solution was adjusted by NH3·H2O, the VACF only adsorbed Pd2+ in the form of physical adsorption. The optimum reaction temperature was 40℃.

关 键 词：活性碳纤维 Pd2+氧化还原吸附 吸附条件 电极电位 

分 类 号：O614.823[理学—无机化学] O647.3[理学—化学]