三维蜂窝状花生壳基炭电极对Cr(VI)的电容去离子性能研究  

Study on capacitive deionization of Cr(VI)by 3D honeycomb-like peanut shell based carbon electrode

作　　者：张晓飞 郑哲奎 牛桂玲 范美青 高洪成 苏浩男 ZHANG Xiao-fei;ZHENG Zhe-kui;NIU Gui-ling;FAN Mei-qing;GAO Hong-cheng;SU Hao-nan(Department of Chemical Engineering,Hebei Petroleum University of Technology,Chengde 067000,China;College of Food Engineering,Jilin Engineering Normal University,Changchun130052,China)

机构地区：[1]河北石油职业技术大学化学工程系,河北承德067000 [2]吉林工程技术师范学院食品工程学院,吉林长春130052

出　　处：《化学研究与应用》2022年第5期1077-1082,共6页Chemical Research and Application

基　　金：河北省自然科学青年基金项目(B2017411009)资助;吉林省自然科学基金自由探索重点项目(YDZJ202101ZYTS093)资助。

摘　　要：本研究以废弃生物质花生壳为原材料,通过水热碳化和高温/KOH活化相结合的方法制备出三维蜂窝状花生壳基生物质炭电极材料(PBC)。PBC具有三维蜂窝状分级多孔结构,比表面积为907 m^(2)·g^(-1)。当外加电压1.0 V时,PBC对Cr(VI)的吸附容量为72.57 mg·g^(-1)。PBC对Cr(VI)的吸附过程符合准二级动力学方程。此外,PBC电极表现出良好的循环稳定性。Peanut shell-based biomass carbon material(PBC)with 3D honeycomb-like structure was prepared by means of hydrothermal carbonization and high-temperature/KOH activation using peanut shell as the precursor.The PBC had a three-dimensional honeycomb porous structure,and large accessible specific surface area(907 m^(2)·g^(-1)).When the applied voltage was 1.0 V,the electrosorption capacity of PBC for Cr(VI)was 72.57 mg·g^(-1).The adsorption process of Cr(VI)by PBC followed pseudo-second-order kinetics model.In addition,the PBC electrode showed excellent cyclic stability.

关 键 词：花生壳 生物质炭 电容去离子 CR(VI) 

分 类 号：X131.2[环境科学与工程—环境科学]