[1]阳春,陈晓虹,王瀚,等.双金属掺杂UiO-66及其对四环素的吸附特性[J].中国给水排水,2023,39(21):78-85.
　YANGChun,CHENXiao-hong,WANGHan,et al.Bimetal Doping of UiO-66 and Its Characteristics for Tetracycline Adsorption[J].China Water & Wastewater,2023,39(21):78-85.
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双金属掺杂UiO-66及其对四环素的吸附特性

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第39卷 期数: 2023年第21期 页码: 78-85 栏目: 出版日期: 2023-11-01
Title:
Bimetal Doping of UiO-66 and Its Characteristics for Tetracycline Adsorption
作者:
阳春， 陈晓虹， 王瀚， 成玉， 胡碧波
（重庆大学 三峡库区生态环境教育部重点实验室，重庆 400045）
Author(s):
YANG　Chun， CHEN　Xiao-hong， WANG　Han， CHENG　Yu， HU　Bi-bo
（Key Laboratory of the Three Gorges Reservoir Region’s Eco-Environment ，Chongqing University， Chongqing 400045， China）
关键词:
金属有机骨架;  UiO-66;  金属掺杂;  四环素;  吸附;  材料改性
Keywords:
metal organic framework;  UiO-66;  metal doping;  tetracycline;  adsorption;  material modification
摘要:
锆基金属有机骨架UiO-66是一种具有高吸附效率的吸附剂，为提高其吸附性能，采用溶剂热法在UiO-66中引入铈（Ce）和锰（Mn）两种金属离子制备改性材料CMN-UiO，研究了改性材料的性能和对四环素的吸附特性。合成的CMN-UiO具有良好的循环再生性能，其比表面积为1 056.43 m2/g，平均孔径为1.35 nm。CMN-UiO较未改性的UiO-66对四环素具有更高的吸附效率，最大吸附容量为234.13 mg/g，吸附平衡时间为40 min，吸附过程遵循Langmuir模型和伪二级动力学模型。当pH=9.0时，CMN-UiO对四环素的吸附容量最大。CMN-UiO对四环素的主要吸附机理为静电相互作用、氢键合力、酸碱作用和π-π相互作用。
Abstract:
Zirconium-based organic framework UiO-66 is an adsorbent with high efficiency. To further improve its adsorption performance, two metal ions cerium (Ce) and manganese (Mn) were doped into UiO-66 by solvothermal method to prepare the modified material CMN-UiO. The performance and tetracycline adsorption characteristics of the modified material were investigated. The synthesized CMN-UiO had good recycling performance. The specific surface area was 1 056.43 m2/g, and the average pore size was 1.35 nm. Compared with unmodified UiO-66, CMN-UiO exhibited higher tetracycline adsorption efficiency. The maximum adsorption capacity was 234.13 mg/g, the adsorption reached equilibrium in 40 min, and the adsorption process followed the Langmuir model and pseudo-second-order kinetic model. When the pH was 9.0, CMN-UiO had the maximum tetracycline adsorption capacity. The adsorption mechanisms mainly consisted of electrostatic interaction, hydrogen bonding, acid-base interaction and π-π interaction.
更新日期/Last Update: 2023-11-01