首页|酸角壳基活性炭的制备及其吸附与电化学性能研究

酸角壳基活性炭的制备及其吸附与电化学性能研究

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以生物质废弃物酸角壳为原料,通过KOH活化制备酸角壳基活性炭(HHC),采用傅里叶变换红外光谱、扫描电子显微镜表征.酸角壳基活性炭吸附亚甲基蓝(MB)的研究表明:吸附是自发进行,吸热,增加混乱度有利于吸附进行;准二级吸附动力学方程及Langmuir等温吸附模型能较好拟合吸附过程.以3 mol/L KOH为电解液,在三电极体系下测定HHC制备的超级电容器电极的循环伏安、恒流充放电、循环性能和交流阻抗.结果显示,电流密度为5A/g时,首次放电比电容为100 F/g,循环20 次后容量保持率为100%,具有较好的循环性能,适合用作超级电容器电极材料.
Research on preparation of tamarind shell-based activated carbon and its adsorption and electrochemical performance
Tamarind shell-based activated carbon was prepared by KOH activation(HHC)and char-acterized by Fourier transform infrared spectroscopy and scanning electron microscope.The simulated adsorption of methylene blue(MB)wastewater by HHC shows that the adsorption is spontaneous,en-dothermic,and the increase of confusion is conducive to the adsorption.The quasi-second-order adsorp-tion kinetics equation and Langmuir isothermal adsorption model can fit the adsorption process well.The cyclic voltammetry,constant current charge-discharge,cyclic performance and AC impedance of su-percapacitor electrodes prepared by HHC were measured in a three-electrode system with 3 mol/L KOH as electrolyte.The results show that when the current density is 5 A/g,the specific capacitance of initial discharge is 100 F/g,and the capacity retention rate is 100%after 20 cycles,which has good cycle performance and is suitable for using as electrode material for supercapacitors.

biomass wastemethylene blueadsorption mechanismsupercapacitorelectrochemical performance

曾艳萍、杨菊芳、揭楚玉、周志明、李旭、张春浩、黄齐林

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玉溪师范学院 化学生物与环境学院,云南 玉溪 653100

云南滇清环境科技有限公司,云南 玉溪 653100

云南警官学院 云南省刑事科学技术重点实验室,云南 昆明 650223

生物质废弃物 亚甲基蓝 吸附机理 超级电容器 电化学性能

云南省地方本科高等学校基础研究联合专项云南省地方本科高等学校基础研究联合专项云南省教育厅科研项目云南省教育厅科研项目公安部重点实验室开放基金大学生创新创业训练计划大学生创新创业训练计划大学生创新创业训练计划大学生创新创业训练计划大学生创新创业训练计划大学生创新创业训练计划

2017FH001-0222018FH001-1172019J07372023J09962019DPKF022020113900042021113900372020113900322020113900332020B672021A022

2024

10.16614/j.gznuj.zrb.2024.01.014

贵州师范大学学报(自然科学版)
贵州师范大学

贵州师范大学学报(自然科学版)

CSTPCD北大核心
影响因子：0.41
ISSN：1004-5570
年,卷(期)：2024.42(1)
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