Fabrication of porous metal–organic frameworks via a mixed-ligand strategy for highly selective and efficient dye adsorption in aqueous solution

CrystEngComm ◽  
2015 ◽  
Vol 17 (31) ◽  
pp. 6037-6043 ◽  
Author(s):  
Xueqiong Zhang ◽  
Yanfei Gao ◽  
Houting Liu ◽  
Zhiliang Liu
Keyword(s):  
Aqueous Solution ◽  
Metal Organic Frameworks ◽  
Dye Adsorption ◽  
Porous Metal ◽  
Mixed Ligand ◽  
Metal Organic

scholarly journals Rapid Room-Temperature Preparation of Hierarchically Porous Metal–Organic Frameworks for Efficient Uranium Removal from Aqueous Solutions

Nanomaterials ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 1539 ◽  
Author(s):  
Chongxiong Duan ◽  
Yi Zhang ◽  
Jiexin Li ◽  
Le Kang ◽  
Yawei Xie ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Aqueous Solutions ◽  
Adsorption Process ◽  
Metal Organic Frameworks ◽  
Porous Metal ◽  
Hierarchically Porous ◽  
Environment And Health ◽  
Effective Removal ◽  
Metal Organic ◽  
Enhanced Adsorption

The effective removal of uranium from an aqueous solution is a highly valuable process for the environment and health. In this study, we developed a facile and rapid method to synthesize hierarchically porous Cu-BTC (RT-Cu-BTC) using a cooperative template strategy. The as-synthesized RT-Cu-BTC exhibited hierarchically porous structure and excellent thermostability, as revealed by X-ray powder diffraction, Fourier-transform infrared spectroscopy, scanning electron microscopy, and thermogravimetric analysis. Compared with conventional metal–organic frameworks (MOFs) and zeolites, the obtained RT-Cu-BTC exhibited enhanced adsorption capacity (839.7 mg·g−1) and high removal efficiency (99.8%) in the capture of uranium (VI) from aqueous solutions. Furthermore, the conditions such as adsorbent dose, contact time, and temperature in adsorption of uranium (VI) by RT-Cu-BTC were investigated in detail. The thermodynamics data demonstrated the spontaneous and endothermic nature of the uranium (VI) adsorption process. The Langmuir isotherm and pseudo-second-order models could better reflect the adsorption process of uranium (VI) onto RT-Cu-BTC. In addition, the as-synthesized RT-Cu-BTC showed excellent stability in removing uranium (VI) from an aqueous solution. This work provides a facile and rapid approach for fabricating hierarchically porous MOFs to realize a highly efficient removal of uranium (VI) from aqueous systems.

Rational assembly of functional Co-MOFs via a mixed-ligand strategy: synthesis, structure, topological variation, photodegradation properties and dye adsorption

CrystEngComm ◽  
2018 ◽  
Vol 20 (34) ◽  
pp. 4973-4988 ◽  
Author(s):  
Chuanbin Fan ◽  
Ziao Zong ◽  
Xia Zhang ◽  
Cungang Xu ◽  
Zheng Zhu ◽  
...  
Keyword(s):  
Rational Design ◽  
Metal Organic Frameworks ◽  
Dye Adsorption ◽  
Mixed Ligand ◽  
Design Approach ◽  
Metal Organic ◽  
Solvothermal Conditions

Four novel Co(ii) metal–organic frameworks were synthesized employing a rational design approach under solvothermal conditions.

Coligand-Rigidity Induced Interpenetration in Flexible Bis-imidazolyl Type Linker Based Mixed Ligand Metal–Organic Frameworks

2019 ◽  
Vol 19 (9) ◽  
pp. 5152-5160 ◽  
Author(s):  
Fazle Haque ◽  
Arijit Halder ◽  
Saheli Ghosh ◽  
Anupam Maiti ◽  
Debajyoti Ghoshal
Keyword(s):  
Metal Organic Frameworks ◽  
Mixed Ligand ◽  
Metal Organic

scholarly journals Highly sensitive detection of nitrobenzene by a series of fluorescent 2D zinc(ii) metal–organic frameworks with a flexible triangular ligand

RSC Advances ◽  
2021 ◽  
Vol 11 (39) ◽  
pp. 23975-23984
Author(s):  
Xue Yang ◽  
Yixia Ren ◽  
Hongmei Chai ◽  
Xiufang Hou ◽  
Zhixiang Wang ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Metal Organic Frameworks ◽  
High Sensitivity ◽  
Fluorescent Sensors ◽  
Sensitive Detection ◽  
Donor Ligands ◽  
Highly Sensitive ◽  
Metal Organic ◽  
Highly Sensitive Detection

Four fluorescent 2D Zn-MOFs based on a flexible triangular ligand and linear N-donor ligands are hydrothermally prepared and used to detect nitrobenzene in aqueous solution with high sensitivity, demonstrating their potential as fluorescent sensors.

Dual Intrareticular Oxidation of Mixed-Ligand Metal–Organic Frameworks for Stepwise Electrochemiluminescence

2021 ◽  
Vol 143 (8) ◽  
pp. 3049-3053
Author(s):  
Da Zhu ◽  
Yong Zhang ◽  
Songsong Bao ◽  
Ningning Wang ◽  
Siqi Yu ◽  
...  
Keyword(s):  
Metal Organic Frameworks ◽  
Mixed Ligand ◽  
Metal Organic

scholarly journals Synthesis of metal–organic frameworks (MOFs) MIL-100(Fe) functionalized with thioglycolic acid and ethylenediamine for removal of eosin B dye from aqueous solution

2021 ◽  
Vol 3 (1) ◽  
Author(s):  
Adedibu C. Tella ◽  
Janet T. Bamgbose ◽  
Vincent O. Adimula ◽  
Mary Omotoso ◽  
Sunday E. Elaigwu ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Thioglycolic Acid ◽  
Metal Organic Frameworks ◽  
Thiol Group ◽  
Spectroscopic Techniques ◽  
Base Interaction ◽  
Adsorption Capacities ◽  
Melting Point Analysis ◽  
Eosin B ◽  
Metal Organic

AbstractThe interaction of eosin B dye from aqueous solution with MIL-100(Fe) and functionalized MIL-100(Fe) metal–organic frameworks (MOFs) is reported in this study. MIL-100(Fe) was prepared and functionalized with thioglycolic acid (TH) and ethylenediammine (ED) separately by incorporating the thiol (–SH) and the amine (–NH2) group of the functionalizing agents into the open metal sites of the MIL-100(Fe) to obtain the acidic (TH-MIL-100) and basic (ED-MIL-100) forms of the MOF respectively. Characterization of the MOFs was done by melting point analysis, elemental analysis, spectroscopic techniques, scanning electron microscopy (SEM), and powdered X-ray diffraction (PXRD) analysis. The adsorption experiments were carried out at different conditions such as pH, adsorbent dosage, contact time, temperature, and initial concentration of the dye to estimate the optimum conditions and the maximum adsorption capacities. Adsorption capacities were observed to increase in the order of ED-MIL-100 < MIL-100 < TH-MIL-100, while the TH-MIL-100 was the most effective in the removal process due to acid–base interaction between the acidic thiol group (–SH) and the alkaline medium of eosin B dye solution. The Langmuir Isotherm was seen to fit well to adsorption data obtained for all three adsorbent materials studied, and adsorption processes followed the pseudo-second order kinetics. This study, therefore, indicates the suitability of functionalization of MIL-100(Fe) towards improving its adsorption capacity.

3D Ln-MOFs as multi-responsive luminescent probe for efficient sensing of Fe3+, Cr2O72‒, and antibiotics in aqueous solution

CrystEngComm ◽  
2021 ◽  
Author(s):  
Yuanshan Xue ◽  
Ji Ding ◽  
Dan-Ling Sun ◽  
Weiwei Cheng ◽  
Xuanrong Chen ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Metal Organic Frameworks ◽  
Luminescent Probe ◽  
Metal Organic ◽  
Lanthanide Metal

Two families of lanthanide metal-organic frameworks (Ln-MOFs), namely {[Ln2L2(DMF)4]·xDMF·yH2O}n (Ln = Ce(1), Pr(2), Sm(3), Eu(4), Gd(5); x = 0,1; y = 0,1), and {[Ln2L2(H2O)2.5]}n (Ln = Dy(6), Ho(7)), have been...

Sign in / Sign up

Export Citation Format

Share Document