UiO-66 metal–organic frameworks in water treatment: A critical review

Ahmadijokani, Farhad; Molavi, Hossein; Rezakazemi, Mashallah; Tajahmadi, Shima; Bahi, Addie; Ko, Frank; Aminabhavi, Tejraj M.; Lǐ, Jiànróng; Arjmand, Mohammad

doi:10.1016/j.pmatsci.2021.100904

Cited by 267 publications

(109 citation statements)

References 586 publications

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“…UiO-66 features cub octahedral nodes Zr 6 O 4 (OH) 4 , which enable 12-fold connections to adjacent organic linkers, giving rise to high stability and the appropriate pore structure [23][24][25]. It is believed that carboxyl functional groups can not only reduce the surface charge of the adsorption material, but also provide abundant sites for cationic nuclides [26].…”

Section: Introductionmentioning

confidence: 99%

The Carboxyl Functionalized UiO-66-(COOH)2 for Selective Adsorption of Sr2+

et al. 2022

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Efficient and selective removal of 90Sr is an important process for the safe use of nuclear energy. Herein, we investigate and assess the Sr2+ adsorption properties of a metal-organic framework UiO-66-(COOH)2 functionalized by non-bonded carboxylic groups. This MOF is an exciting class of free carboxylic functionalized MOFs that combine chemical stability with gas sorption, dye elimination, and conductivity. Specifically, we show that uniformly distributed carboxyl and water stability make it accessible for loading Sr2+ without structural changes. The FTIR spectroscopy, PXRD analysis, XPS, and SEM-EDS studies show excellent stability as well as the strong affinity between -COOH active site and Sr2+. This strong coordination interaction guarantees a high adsorption capacity of 114 mg g−1 within 5 h (pH 5 and 298 K). Combined kinetic and thermodynamic studies show that the surface complexation is strong chemisorption and cost-effective spontaneous process (ΔG = −5.49 kJ mol−1~−2.16 kJ mol−1). The fact that UiO-66-(COOH)2 not only possesses a high adsorption capacity, but also enables selectivity to Sr2+ in the presence of similar radius ions Na+ and K+, prefigures its great potential for the practical treatment of radioactive Sr2+ in polluted water.

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Section: Introductionmentioning

confidence: 99%

The Carboxyl Functionalized UiO-66-(COOH)2 for Selective Adsorption of Sr2+

et al. 2022

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“…The latter were fabricated by simultaneous injection of different aqueous suspensions (0.04 and 0.3 vol% GO) through separated nozzles into the O-POSS. A myriad of application prospects emerges given the possibility of loading these GO suspensions with different materials (e.g., magnetic particles, [35] metal-organic frameworks, [54] etc.) and injecting them through different needles simultaneously.…”

Section: Emulsification and Lsmentioning

confidence: 99%

Structured Ultra‐Flyweight Aerogels by Interfacial Complexation: Self‐Assembly Enabling Multiscale Designs

Kamkar

Ghaffarkhah

Ajdary

et al. 2022

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The rapid co‐assembly of graphene oxide (GO) nanosheets and a surfactant at the oil/water (O/W) interface is harnessed to develop a new class of soft materials comprising continuous, multilayer, interpenetrated, and tubular structures. The process uses a microfluidic approach that enables interfacial complexation of two‐phase systems, herein, termed as “liquid streaming” (LS). LS is demonstrated as a general method to design multifunctional soft materials of specific hierarchical order and morphology, conveniently controlled by the nature of the oil phase and extrusion's injection pressure, print‐head speed, and nozzle diameter. The as‐obtained LS systems can be readily converted into ultra‐flyweight aerogels displaying worm‐like morphologies with multiscale porosities (micro‐ and macro‐scaled). The presence of reduced GO nanosheets in such large surface area systems renders materials with outstanding mechanical compressibility and tailorable electrical activity. This platform for engineering soft materials and solid constructs opens up new horizons toward advanced functionality and tunability, as demonstrated here for ultralight printed conductive circuits and electromagnetic interference shields.

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“…MOFs are promising materials for the removal of contaminants from water [ 15 , 16 ], since they exhibit numerous properties that enable their use in water treatment [ 17 ]: (i) they have a certain stability in water; (ii) they have high sorption capacities, attributable to large specific surface area and pore volume; (iii) they have openings for adjusting their structure to allow for shape-selective adsorption and/or catalysis; (iv) they have active sites, where contaminants can be adsorbed or transformed; (v) they have functionalizable cavities, where host−guest interactions can occur; (vi) the synthesis of some MOFs can be scaled-up; and (vii) they can be molded as monoliths, pellets, membranes, or columns, that can be used in degradation reactors.…”

Section: Introductionmentioning

confidence: 99%

Recent Progress in the Removal of Legacy and Emerging Organic Contaminants from Wastewater Using Metal–Organic Frameworks: An Overview on Adsorption and Catalysis Processes

Badea

Niculescu

2022

Materials

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Water covers about 70% of the Earth’s surface, but the amount of freshwater available for human use is only 2.5% and, although it is continuously replenished via the water cycle, freshwater is a finite and limited resource. The Earth’s water is affected by pollution and while water quality is an issue of global concern, the specific regulations on contaminants of emerging concern (CECs) are limited. In order to achieve the goals set by EU regulations, the treatment of wastewater is a scientifically and technologically challenging issue. Metal–organic frameworks (MOFs) are promising materials used for the removal of priority and emerging contaminants from wastewater, since they can mitigate those contaminants via both adsorption as well as catalysis processes. MOFs can offer selective adsorption of CECs by various adsorption mechanisms. The catalytic removal of priority and emerging organic contaminants from wastewater using MOFs implies Fenton, electro-Fenton, and photo-Fenton processes. Overall, MOFs can be considered as promising materials for the elimination of priority and emerging organic contaminants from various wastewater types, but the involved processes must be studied in detail for a larger number of compounds.

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UiO-66 metal–organic frameworks in water treatment: A critical review

Cited by 267 publications

References 586 publications

The Carboxyl Functionalized UiO-66-(COOH)2 for Selective Adsorption of Sr2+

The Carboxyl Functionalized UiO-66-(COOH)2 for Selective Adsorption of Sr2+

Structured Ultra‐Flyweight Aerogels by Interfacial Complexation: Self‐Assembly Enabling Multiscale Designs

Recent Progress in the Removal of Legacy and Emerging Organic Contaminants from Wastewater Using Metal–Organic Frameworks: An Overview on Adsorption and Catalysis Processes

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