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山竹壳基活性炭的制备及性能研究
引用本文:单永芳,黄齐林,韩汝莲,郑朝胚,杨含梅,曾艳萍.山竹壳基活性炭的制备及性能研究[J].现代农业科技,2020(12).
作者姓名:单永芳  黄齐林  韩汝莲  郑朝胚  杨含梅  曾艳萍
作者单位:玉溪师范学院,玉溪师范学院化学生物与环境学院,玉溪师范学院,玉溪师范学院,玉溪师范学院,玉溪师范学院
基金项目:云南省地方本科高校(部分)基础研究联合专项(2018FH001-117、2017FH001-022);开放课题项目(2019DPKF02);玉溪师范学院大学生创新创业训练计划项目(国家级:201811390009;省级:201511390008;校级:2017B34、2016B31、2016B23)*通讯作者:曾艳萍,Email:zyp@yxnu.edu.cn;黄齐林,Email:qqhll@yxnu.edu.cn
摘    要:以山竹壳作为原料,KOH、K_2CO_3、NaOH和Na_2CO_3为活化剂,采用化学活化法制备山竹壳基活性炭。用傅里叶变换红外光谱(FTIR)和扫描电子显微镜(SEM)表征山竹壳基活性炭。按照国标方法测定不同活化剂制备的活性炭吸附值,通过循环伏安法、恒流充放电和电化学阻抗谱考察其电化学性能。结果表明,以KOH为活化剂制备的活性炭性能最好,其碘吸附值为1 657 mg/g;在3 mol/L KOH电解液中,电流密度为10 A/g时,比电容为198 F/g;在电流密度为5 A/g时进行2 000 s恒流充放电测试,比电容保持达到90%以上。说明活化剂有助于改善所制备的活性炭的性能,且碱性越强,活化效果越好。

关 键 词:山竹壳  活性炭  超级电容器  碘吸附
收稿时间:2020/3/10 0:00:00
修稿时间:2020/3/10 0:00:00

Study on Preparation and Properties of Mangosteen Shell-based Activated Carbon
Authors:ZENG Yan-ping
Institution:Yuxi Normal University
Abstract:Mangosteen shell-based activated carbon was prepared with KOH, K2CO3, NaOH and Na2CO3 as activators. Fourier transform infrared spectroscopy (FTIR) and scanning electron microscope (SEM) were used to characterize mangosteen shell-based activated carbon. The adsorption values of activated carbon prepared by different activators were determined according to the national standard method. The electrochemical properties of activated carbon were investigated by cyclic voltammetry, constant current charge and discharge and electrochemical impedance spectroscopy. The results showed that the activated carbon prepared with KOH as activator had the best performance. Its iodine adsorption value was 1657 mg/g. In 3 mol/L KOH electrolyte, the specific capacitance is 197.7 F/g when the current density is 10 A/g. The specific capacitance remains above 90% When the current density is 5A/g and the constant current charge-discharge test of 2000 s is carried out. Activation agent is helpful to improve the properties of the prepared activated carbon, the stronger the alkalinity, the better the activation effect.
Keywords:Mangosteen  shell  activated  carbon  super  capacitor  iodine  adsorption
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