Adsorption Behavior of Rhodamine B on UiO-66

被引：74
作者：
He, Qinqin [1 ]
Chen, Qi [1 ]
Lu, Mengmeng [1 ]
Liu, Xueting [1 ]
机构：
[1] Hefei Univ Technol, Sch Chem Engn, Anhui Key Lab Controllable Chem React & Mat Chem, Hefei 230009, Peoples R China
来源：
CHINESE JOURNAL OF CHEMICAL ENGINEERING | 2014年 / 22卷 / 11-12期
关键词：
Adsorption; UiO-66; Kinetics; Thermodynamics; Isotherm; Regeneration; METAL-ORGANIC FRAMEWORK; METHYLENE-BLUE ADSORPTION; ZEOLITE MEMBRANES; KINETICS; SORPTION;
D O I：
10.1016/j.cjche.2014.09.009
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The adsorption characteristics of UiO-66 (a Zr-containing metal-organic framework formed by terephthalate) for Rhodamine B (RhB), such as isotherms, kinetics and thermodynamics, were investigated systematically. The batch adsorption data conform well to the Langmuir and Freundlich isotherms. The adsorption kinetics of UiO-66 for RhB can be well described by the pseudo first-order model, and the adsorption thermodynamic parameters Delta G(0), Delta H-0 and Delta S-0 at 273 K are -6.282 kJ.mol(-1), 15.096 kJ.mol(-1) and 78.052 J.mol(-1).K-1, respectively. The thermodynamic analyses show that the adsorption process of RhB on UiO-66 is more favorable at higher temperatures. UiO-66 can be regenerated by desorbing in DMF solution with ultrasonic for 1 h. UiO-66 can keep good performance for at least six cycles of sorption/desorption. (C) 2014 The Chemical Industry and Engineering Society of China, and Chemical Industry Press. All rights reserved.
引用
收藏
页码：1285 / 1290
页数：6
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