Recent progresses in luminescent metal–organic frameworks (LMOFs) as sensors for the detection of anions and cations in aqueous solution

2021 ◽  
Vol 50 (6) ◽  
pp. 1950-1972 ◽  
Author(s):  
Jing Jin ◽  
Juanjuan Xue ◽  
Yanchen Liu ◽  
Guoping Yang ◽  
Yao-Yu Wang
Keyword(s):  
Aqueous Solution ◽  
Aqueous Solutions ◽  
Metal Ions ◽  
Metal Organic Frameworks ◽  
Metal Organic ◽  
Anions And Cations

This work mainly reviews the recent progresses in luminescent metal–organic frameworks (LMOFs) as sensors for detecting various metal ions and anions in aqueous solutions.

Heavy metal removal from waste waters by phosphonate metal organic frameworks

2018 ◽  
Vol 90 (1) ◽  
pp. 35-47 ◽  
Author(s):  
Bianca Maranescu ◽  
Lavinia Lupa ◽  
Aurelia Visa
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Aqueous Solutions ◽  
Metal Ions ◽  
Phosphonic Acid ◽  
Metal Organic Frameworks ◽  
Waste Waters ◽  
Heavy Metals Removal ◽  
Metals Removal ◽  
Metal Organic

AbstractThe increase attention in the area of phosphonate metal organic framework is exemplified with a variety of applications and a rich chemistry of these compounds. Water pollution caused by heavy metal ions is a major concern due to their toxicity to many life forms. In order to decrease the heavy metals impact upon the environment various technologies of water treatment such as: chemical sedimentation, ion exchange, redox process are studied. The tendency is to find a versatile and economical method of heavy metals removal from waste waters. Phosphonate metal organic frameworks were obtained by the reaction of Ni(CH3COO)2·4H2O, phosphonic acid (phosphonoacetic (CP), vinyl phosphonic acid (VP) and N,N-bis(phosphonomethyl)glycine (Gly)) in hydrothermal conditions. Coordination polymers synthesized were characterized by FTIR, XRD, scanning electron microscopy (SEM) and thermal gravimetric analysis (TGA). The adsorption processes represent a very good alternative for heavy metals removal due to low costs and ease of operation. In the present paper the adsorption performance of the mentioned materials in the removal process of heavy metals from aqueous solutions, was studied using the batch method. The adsorption conditions were investigated by varying the initial pH, contact time and adsorbate initial concentration for chromium metal ions removal from aqueous solutions. It was found that the adsorption efficiency of the studied materials in the removal process of Cr(VI) ions from aqueous solutions is in the following order: Ni-CP<Ni-Gly≤Ni-VP.

Pillared metal organic frameworks for the luminescence sensing of small molecules and metal ions in aqueous solutions

2015 ◽  
Vol 44 (4) ◽  
pp. 1754-1760 ◽  
Author(s):  
Fu-Hong Liu ◽  
Chao Qin ◽  
Yan Ding ◽  
Han Wu ◽  
Kui-Zhan Shao ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Metal Ions ◽  
Small Molecules ◽  
Metal Organic Frameworks ◽  
Luminescent Probes ◽  
Highly Sensitive ◽  
Metal Organic

Two pillared-layer MOFs as luminescent probes with multifunctional sensitivities to detect metal ions and small molecules were reported. Our results show that the luminescence intensities of 1a and 2a are highly sensitive to Fe3+ and Cd2+ ions and small molecules such as acetone and nitrobenzene.

Selective removal of transition metal ions from aqueous solution by metal–organic frameworks

RSC Advances ◽  
2015 ◽  
Vol 5 (88) ◽  
pp. 72107-72112 ◽  
Author(s):  
Yutian Zhang ◽  
Xudong Zhao ◽  
Hongliang Huang ◽  
Zhengjie Li ◽  
Dahuan Liu ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Transition Metal ◽  
Metal Ions ◽  
Metal Organic Frameworks ◽  
Transition Metal Ions ◽  
Selective Removal ◽  
Carboxyl Groups ◽  
Separation Selectivity ◽  
Metal Organic ◽  
High Separation

Carboxyl groups in adjacent ligands in UiO-66(Zr)–2COOH exhibit specific capture performance for Cu2+, resulting in high separation selectivity for Cu2+/Ni2+.

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.

Grafting functional groups in metal–organic frameworks for U(vi) sorption from aqueous solutions

2020 ◽  
Vol 49 (36) ◽  
pp. 12536-12545 ◽  
Author(s):  
Jianbo Xiong ◽  
Yaling Fan ◽  
Feng Luo
Keyword(s):  
Aqueous Solution ◽  
Aqueous Solutions ◽  
Functional Groups ◽  
Metal Organic Frameworks ◽  
Uranium Extraction ◽  
Sorption From Aqueous Solutions ◽  
Metal Organic

Recent highlights of the organic groups-functionalized MOFs for uranium extraction from aqueous solution are discussed.

3D water-stable europium metal organic frameworks as a multi-responsive luminescent sensor for high-efficiency detection of Cr2O72−, MnO4−, Cr3+ ions and SDBS in aqueous solution

2018 ◽  
Vol 42 (24) ◽  
pp. 20137-20143 ◽  
Author(s):  
Shuai-Liang Yang ◽  
Yue-Ying Yuan ◽  
Pei-Pei Sun ◽  
Tian Lin ◽  
Chen-Xi Zhang ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Aqueous Solutions ◽  
High Efficiency ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
Luminescent Sensor ◽  
Fluorescence Measurements ◽  
Metal Organic ◽  
Organic Framework

A 3D water-stable europium metal organic framework has been synthesized. Fluorescence measurements show that the MOF can selectively and sensitively detect Cr2O72−, MnO4−, Cr3+ ions and SDBS in aqueous solutions.

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.

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