Highly efficient methyl orange adsorption by UV-012, a new crystalline Co(ii) MOF

CrystEngComm ◽  
2021 ◽  
Author(s):  
Daniel J. Ramírez ◽  
Luis A. Alfonso Herrera ◽  
Raúl Colorado-Peralta ◽  
Rodolfo Peña Rodríguez ◽  
P. K. Camarillo Reyes ◽  
...  

This work presents three scientific contributions: the new metal organic framework (UV-012) crystal structure, the evaluation of this new material for dye adsorption and a new mechanism that explains the excellent and selective anionic dye adsorption by this material.

2017 ◽  
Vol 75 (12) ◽  
pp. 2800-2810 ◽  
Author(s):  
Shi-chuan Wu ◽  
Xia You ◽  
Cao Yang ◽  
Jian-hua Cheng

MIL-68(Al), a powdered aluminum-based metal organic framework (MOF), was synthesized and used to explore its adsorption behavior toward methyl orange (MO). The adsorption isotherm, thermodynamics, kinetics, and some key operating factors as well as changes in the material's structure were investigated. The adsorption isotherm conformed to the Langmuir isotherm model and the maximum equilibrium adsorption capacity was 341.30 mg g−1. Thermodynamic data demonstrated that the adsorption process was spontaneous, endothermic and showed positive entropy. For kinetics, the process of MO adsorption onto MIL-68(Al) was more suitably described by a pseudo-second-order model. Electrostatic and hydrogen-bonding interactions contributed to dye adsorption, with electrostatic interactions considered to be the principal binding force between adsorbent and adsorbate. Furthermore, MIL-68(Al) maintained a stable structure after adsorption. From these results, MIL-68(Al) was suggested here to be a stable MOF adsorbent for removing MO from aqueous solution.


CrystEngComm ◽  
2017 ◽  
Vol 19 (46) ◽  
pp. 7057-7067 ◽  
Author(s):  
Lu Lu ◽  
Jian Wu ◽  
Jun Wang ◽  
Jian-Qiang Liu ◽  
Bao-Hong Li ◽  
...  

A stable 3D Cd(ii) MOF used as chemosensor and adsorbent for dyes in wastewater, which exhibited excellent adsorption performance and selectivity.


Author(s):  
Xiao-Li Yang ◽  
Yang-Tian Yan ◽  
Wen-Juan Wang ◽  
Ze-Ze Hao ◽  
Wen-Yan Zhang ◽  
...  

2020 ◽  
Vol 35 (1) ◽  
pp. 610-617
Author(s):  
Houxiao Wu ◽  
Yinuo Yuan ◽  
Yongwei Chen ◽  
Daofei Lv ◽  
Shi Tu ◽  
...  

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