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.

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...

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.

A robust polyoxometalate-templated four-fold interpenetrating metal–organic framework showing efficient organic dye photodegradation in various pH aqueous solutions

2018 ◽  
Vol 47 (15) ◽  
pp. 5245-5251 ◽  
Author(s):  
Min Liu ◽  
Xu-Feng Yang ◽  
Hai-Bin Zhu ◽  
Bao-Sheng Di ◽  
Yue Zhao
Keyword(s):  
Aqueous Solutions ◽  
Organic Dyes ◽  
Metal Organic Framework ◽  
Organic Dye ◽  
Light Irradiation ◽  
Wide Ph Range ◽  
Metal Organic ◽  
Ph Range ◽  
Organic Framework

A polyoxometalate-templated four-fold interpenetrating 3-D MOF of 1 acts as a photocatalyst, which can efficiently degrade the organic dyes under UV-Vis light irradiation in aqueous solutions over a wide pH range.

Facile synthesis of an ultra-stable metal–organic framework with excellent acid and base resistance

2017 ◽  
Vol 201 ◽  
pp. 63-70 ◽  
Author(s):  
Nian Zhao ◽  
Ping Li ◽  
Xin Mu ◽  
Chuanfang Liu ◽  
Fuxing Sun ◽  
...  
Keyword(s):  
Large Scale ◽  
Metal Organic Framework ◽  
Scale Production ◽  
Synthesis Conditions ◽  
Large Scale Production ◽  
Acid And Base ◽  
Metal Organic ◽  
Ph Range ◽  
Short Time ◽  
Organic Framework

A novel ultra-stable metal–organic framework, MCIF-1, [Cu2(DCI)2](MeCN), based on dicyanoimidazole and Cu(i), has been synthesized at room temperature successfully. MCIF-1 shows excellent water stability and can retain crystallinity after soaking in water for about one week. In addition, MCIF-1 also shows exceptional resistance under both acidic and basic conditions within a large pH range from 0 to 13.5. What is more, after modifying the synthesis procedure slightly, we can produce this material in a large scale during a very short time. Mild synthesis conditions, excellent stability and ease of large scale production give MCIF-1 great potential for practical use.

scholarly journals A cobalt-organic framework with sensitive detection of Fe3+, Cr2O72–, and CrO42– ions in water

2021 ◽  
Author(s):  
Zhen Zhang ◽  
Han-Xu Sun ◽  
Shi-Fen Li ◽  
Rui-Dong Wang ◽  
Lin Du ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Metal Organic Framework ◽  
Surface Characteristics ◽  
The Novel ◽  
Elemental Analyses ◽  
Metal Organic ◽  
Crystal Structural ◽  
The Stability ◽  
Ph Range ◽  
Organic Framework

Abstract A six-coordinated 3D metal–organic framework (MOF), namely, [Co(BPDC)(3-bpdb)(H2O)2]n (1) (H2BPDC = 4,4′-biphenyldicarboxylic acid, 3-bpdb = 1,4-bis(3-pyridyl)-2,3-diaza-1,3-butadiene) was purposefully constructed and characterized by single-crystal XRD, IR, elemental analyses, PXRD, SEM, and TGA. Crystal structural analysis revealed that the complex consists of a cds-type three-fold interpenetrated framework. Hirshfeld surface analysis yielded details of the surface characteristics of 1. Significant O−H···O hydrogen bonding interactions, which could promote the stability of the framework, were found is extremely stable in aqueous solution and can resist acids and bases over an extensive pH range of 2 - 13. 1 shows brilliant fluorescent emission in the solid state and in aqueous solution. Fluorescence titration, cyclic, and anti-interference experiments demonstrated that 1 is an excellent probe for Fe3+, CrO42‒ and Cr2O72‒ in water. The Ksv values of 1 for Fe3+, CrO42‒, and Cr2O72‒, which were as high as 1.06 × 104 M−1, 1.50 × 104 M−1, and 1.16 × 104 M−1, respectively, were comparable with those of other sensors. The quenching mechanism of the novel probe was subsequently explained.

A semiconductor and fluorescence dual-mode room-temperature ammonia sensor achieved by decorating hydroquinone into a metal–organic framework

2018 ◽  
Vol 54 (70) ◽  
pp. 9789-9792 ◽  
Author(s):  
Yong-Peng Li ◽  
Shu-Ni Li ◽  
Yu-Cheng Jiang ◽  
Man-Cheng Hu ◽  
Quan-Guo Zhai
Keyword(s):  
Room Temperature ◽  
Metal Organic Framework ◽  
Quantitative Detection ◽  
Ammonia Vapor ◽  
Ammonia Sensor ◽  
Dual Mode ◽  
Metal Organic ◽  
Single Response ◽  
Organic Framework

A semiconductor and fluorescence dual-mode MOF sensor exhibits extraordinary sensitivity, fast and single response, and good reusability for quantitative detection of ammonia vapor or liquid at room temperature.

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