Extremely stable europium-organic framework for luminescent sensing of Cr2O72− and Fe3+ in aqueous systems

2018 ◽  
Vol 47 (35) ◽  
pp. 12051-12055 ◽  
Author(s):  
Yan-Li Gai ◽  
Qin Guo ◽  
Xue-Yan Zhao ◽  
Yan Chen ◽  
Shan Liu ◽  
...  
Keyword(s):  
Aqueous System ◽  
Aqueous Systems ◽  
Dual Functional ◽  
Aqueous Environments ◽  
Wide Ph Range ◽  
Ph Range ◽  
Luminescent Sensing ◽  
Organic Framework

A novel Eu-MOF which is extremely stable in an aqueous system over a wide pH range is reported as a dual functional Cr2O72− and Fe3+ sensor in aqueous environments.

Rapid Recognition of Fatal Cyanide in Water in a Wide pH Range by a Trifluoroacetamido Based Metal-Organic Framework

2021 ◽  
Author(s):  
Abhijeet Rana ◽  
Chiranjib Gogoi ◽  
Subhrajyoti Ghosh ◽  
Soutick Nandi ◽  
Saurav Kumar ◽  
...  
Keyword(s):  
Thermogravimetric Analysis ◽  
Terephthalic Acid ◽  
Metal Organic Framework ◽  
X Ray Diffraction ◽  
X Ray ◽  
Acid Ligand ◽  
Wide Ph Range ◽  
Metal Organic ◽  
Ph Range ◽  
Organic Framework

A new metal-organic-framework (MOF) called UiO-66-NH-COCF3 was prepared using trifluoroacetamido functionalized terephthalic acid ligand. Powder X-ray diffraction (PXRD), infrared (IR) spectroscopy, thermogravimetric analysis (TGA) and Brunauer Emmett-Teller (BET) experiment were...

A terbium metal–organic framework with stable luminescent emission in a wide pH range that acts as a quantitative detection material for nitroaromatics

RSC Advances ◽  
2015 ◽  
Vol 5 (60) ◽  
pp. 48574-48579 ◽  
Author(s):  
Jinzeng Wang ◽  
Wei Sun ◽  
Siyuan Chang ◽  
Houting Liu ◽  
Guonan Zhang ◽  
...  
Keyword(s):  
Metal Organic Framework ◽  
Quantitative Detection ◽  
Wide Ph Range ◽  
Metal Organic ◽  
Ph Range ◽  
Organic Framework

This work reports a fascinating Tb-MOF which can efficiently and quantitatively detect nitroaromatics and maintain stable luminescent emission in a wide pH range.

scholarly journals Application of MIL-53(Fe) metal-organic framework material in catalytic wet oxidation of phenol

2021 ◽  
Vol 10 (1) ◽  
pp. 28-32
Author(s):  
Danh Huynh Thanh ◽  
Nghi Nguyen Huu ◽  
Du Pham Dinh
Keyword(s):  
Metal Organic Framework ◽  
Phenol Oxidation ◽  
Oxidation Reactions ◽  
Catalytic Wet Oxidation ◽  
X Ray Diffraction ◽  
Initial Ph ◽  
Wide Ph Range ◽  
Metal Organic ◽  
Ph Range ◽  
Organic Framework

In the present study, MIL-53(Fe) metal-organic framework material was applied as catalyst for phenol oxidation reaction in aqueous solution with H2O2 under UV radiation. The materials were characterized using X-ray diffraction (XRD), and fourier transform infrared spectroscopy (FT-IR). The effects of reaction time, initial phenol concentration, and initial pH of the solution on phenol oxidation reactions were investigated. The results indicated that MIL-53(Fe) could work effectively in the wide pH range from 2 to 10. Phenol was quickly oxidized to form simple organic acids, including acetic acid, formic acid and oxalic acid.

Green synthesis of a novel water-stable Sn(ii)-TMA metal–organic framework (MOF): an efficient adsorbent for fluoride in aqueous medium in a wide pH range

2020 ◽  
Vol 44 (4) ◽  
pp. 1354-1361 ◽  
Author(s):  
Arnab Ghosh ◽  
Gopal Das
Keyword(s):  
Zeta Potential ◽  
Green Synthesis ◽  
Aqueous Medium ◽  
Metal Organic Framework ◽  
Fluoride Adsorption ◽  
Wide Ph Range ◽  
Metal Organic ◽  
Ph Range ◽  
Efficient Adsorbent ◽  
Organic Framework

An Sn(ii)-TMA MOF displaying positive zeta potential over a broad pH range (3–10) for selective fluoride adsorption from aqueous medium.

scholarly journals Dual Functional Composite of Montmorillonite-Rich/Chitosan (MCC) for Decolorizing the Water Used in Joss Paper Process: Thermodynamic, Isotherm, and Kinetic Studies

2020 ◽  
Vol 10 (21) ◽  
pp. 7493
Author(s):  
Witsarut Muangrak ◽  
Nutthavich Thouchprasitchai ◽  
Yuththaphan Phongboonchoo ◽  
Sangobtip Pongstabodee
Keyword(s):  
Active Sites ◽  
Dye Removal ◽  
Adsorption Process ◽  
Kinetic Studies ◽  
Dual Functional ◽  
Rate Limiting Step ◽  
Wide Ph Range ◽  
Intra Particle Diffusion ◽  
Pseudo Second Order ◽  
Ph Range

A hybrid montmorillonite (Mt)-rich/chitosan composite (MCC) with high adsorption performance was synthesized for the decolorization of water used in the joss paper process. The performance was reported in terms of the dye removal. The composite expressed higher performance than chitosan or Mt-rich clay, respectively. The optimum condition for complete dye removal was achieved when using at least 0.6 g of the composite over a wide pH range (3–10) and initial dye concentration (10–100 mg L−1). The composite showed good reusability without the requirement of regeneration, adsorbing the dye completely for up to eight successive cycles of adsorption (>1.33 gdye gMCC−1). Thermodynamic analyses revealed the degree of spontaneity and the endothermic adsorption process. From the isotherm studies, the Koble–Corrigan isotherm model fitted very well to the experimental data, revealing that the composite had a heterogeneous surface with various active sites to adsorb the dye molecules. This also evidenced the synergistic electrostatic attraction and hydrophobic interaction between the dye and the composite. The pseudo-second-order model best explained the kinetic rate of adsorption. From evaluation of the adsorption process using the Webber and Morris equation and Boyd model, the rate-limiting step consisted of film diffusion and intra-particle diffusion.

A hydrolytically stable anionic layered indium–organic framework for the efficient removal of 90Sr from seawater

2019 ◽  
Vol 48 (48) ◽  
pp. 17858-17863 ◽  
Author(s):  
Guodong Li ◽  
Guoxun Ji ◽  
Wei Liu ◽  
Jiarong Zhang ◽  
Liping Song ◽  
...  
Keyword(s):  
Layered Compound ◽  
Efficient Removal ◽  
Wide Ph Range ◽  
Ph Range ◽  
Organic Framework

A layered compound with superior selectivity and removal ability toward 90Sr over a wide pH range.

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