吉林大学学报(理学版) ›› 2024, Vol. 62 ›› Issue (2): 444-0451.

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二硫代氨基甲酸盐改性GO材料及其对Cu2+的吸附性能

杨伟杰, 李杰, 李艳霞, 赵辉   

  1. 周口师范学院 化学化工学院, 河南 周口466001
  • 收稿日期:2023-10-16 出版日期:2024-03-26 发布日期:2024-03-26
  • 通讯作者: 赵辉 E-mail:chromsnow@163.com

Dithiocarbamate Modified GO Material and Its  Adsorption Performance for  Cu2+

YANG Weijie,  LI Jie,  LI Yanxia,  ZHAO Hui   

  1. School of Chemistry and Chemical Engineering,  Zhoukou Normal University,  Zhoukou 466001,  Henan Province,  China
  • Received:2023-10-16 Online:2024-03-26 Published:2024-03-26

摘要: 将三乙烯四胺(TETA)接枝到氧化石墨烯(GO)表面, 再与CS2反应, 制备得到基于TETA的二硫代氨基甲酸盐改性GO材料(GO-TETA-DTC). 采用红外光谱仪、 元素分析仪和扫描电子显微镜对GO-TETA-DTC进行表征分析, 并研究该材料对Cu2+的吸附性能, 考察溶液pH值、 Cu2+初始质量浓度、 吸附时间和温度对吸附效果的影响. 结果表明: GO-TETA-DTC对水中Cu2+的吸附过程遵循准二级动力学方程、颗粒内扩散方程以及Langmuir方程;从Langmuir方程计算得到的GO-TETA-DTC对Cu2+的最大吸附量为294.12 mg/g;吸附过程以吸热和熵增的形式进行.

关键词: 石墨烯, 二硫代氨基甲酸盐,  , 铜离子, 吸附

Abstract: The dithiocarbamate modified graphene oxide (GO) material (GO-TETA-DTC) based on triethylenetetramine (TETA) was prepared by grafting TETA onto the surface of GO firstly and then reacting it with CS2. The GO-TETA-DTC was characterized and analyzed by infrared spectrometer,  element analyzer and scanning electron microscope. We studied the adsorption performance of the material on Cu2+, and investigated the effects of pH values of solution, initial  mass concentration of Cu2+, adsorption time and temperature on adsorption effects. The  results show  that the adsorption process of Cu2+ in water by GO-TETA-DTC follows the quasi-second order kinetic equation,  the intra-particle diffusion equation and Langmuir equation.  The maximum adsorption capacity of GO-TETA-DTC for Cu2+ calculated from Langmuir equation is 294.12 mg/g. The  adsorption process takes place in the form of heat absorption and  entropy increase.

Key words:  , graphene,  , dithiocarbamate,  , copper ion,  , adsorption

中图分类号: 

  • O69