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›› 2010, Vol. 10 ›› Issue (4): 685-690.

• 反应与分离 • 上一篇    下一篇

金属掺杂二氧化钛介孔材料对葛根素的吸附行为

唐文华 刘少友 冯庆革 王翔 龙步明   

  1. 凯里学院应用化学研究所 凯里学院应用化学研究所 广西大学化学化工学院 凯里学院应用化学研究所 广西大学化学化工学院
  • 收稿日期:2010-05-25 修回日期:2010-08-02 出版日期:2010-08-20 发布日期:2010-08-20
  • 通讯作者: 唐文华

Adsorption Behavior of Puerarin on Metal-doped TiO2 Mesoporous Material

FENG Qing-ge TANG Wen-hua LIU Shao-you WANG Xiang LONG Bu-ming，   

  1. Institute of Applied Chemistry, Kaili College Institute of Applied Chemistry, Kaili University College of Chemistry and Chemical Engineering, Guangxi University Institute of Applied Chemistry, Kaili College College of Chemistry and Chemical Engineering, Guangxi University
  • Received:2010-05-25 Revised:2010-08-02 Online:2010-08-20 Published:2010-08-20
  • Contact: FENG Qing-ge

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摘要： 以葛根素为探针分子，研究了pH=4.5、初始浓度8 mg/L、不同时间与温度下TiO2及金属铝、镍、锌单掺杂TiO2介孔材料对葛根素的吸附行为. 结果表明，葛根素在该介孔材料上的吸附行为符合Freundlich等温单层吸附模型；其准一级吸附速率常数k=(0.30~0.58)′10?2 min-1，且kZn-TiO2

关键词: 介孔材料, 葛根素, 吸附, 动力学, 热力学, 扩散系数, 稳定性

Abstract: The adsorption of puerarin on metal (Al, Ni, Zn)-doped TiO2 and bare TiO2 mesoporous materials was investigated at the pH value of 4.5, puerarin concentration of 8 mg/L, different temperatures and various times. The results showed that the adsorption kinetics of puerarin on these mesoporous materials was in better agreement with Freundlich isotherm model and ascribed to the monolayer adsorption. The pseudo-first-order adsorption rate constant k varied from 0.30′10-2 to 0.58′10-2 min-1 and decreased by the order of Zn-TiO2

Key words: mesoporous material, puerarin, adsorption, kinetics, thermodynamics, diffusion, stability

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