A new microporous anionic metal–organic framework as a platform for highly selective adsorption and separation of organic dyes

He, Yuan‐Chun; Yang, Jin; Kan, Wei-Qiu; Zhang, Hongmei; Liu, Yingying; Ma, Jian‐Fang

doi:10.1039/c4ta05391e

Cited by 182 publications

(66 citation statements)

References 67 publications

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“…As shown in Figure , the concentration of anionic dye MO was still high after 12 h of adsorption. While, the concentration of MB decreases rapidly with the membrane immersed in the aqueous solution and the MB cannot be detected after 2 h. The membrane possesses a faster adsorption property for MB than other adsorbents reported in previous reports ,. Theoretically, the prepared membranes have the ability to adsorb MB, RhB and MO owing to the presence of carboxylate anions and imidazolium cations.…”

Section: Resultsmentioning

confidence: 71%

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Photo and Humidity Responsive Mesoporous Poly(ionic Liquid) Membrane for Selective Dye Adsorption

Lü

Zhao³

et al. 2017

ChemistrySelect

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Photo and humidity responsive mesoporous poly(ionic liquid) (PIL) membrane has been easily fabricated by a template‐free phase separation method. Due to the photoisomerization of azobenzene group, the porous structure of membrane can be manipulated by incident light. The pores can be switched “on” and “off” through humidity stimulus. Small‐angle X‐ray scattering (SAXS) measurement was performed to investigate the mechanism of porous formation and structure changes. Extremely high swelling and water uptake ratios and charged character endow the membrane excellent selective adsorption capability for cationic dye methylene blue (MB). Taking advantage of the structure changes in response to humidity and light, the porous membrane open a door to new fields for special applications.

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Section: Resultsmentioning

confidence: 71%

“…Adsorption is one of the best technologies to solve the pollution. Furthermore, it is necessary to selectively remove the targeted dye wastes . In view of the excellent performance of porous membrane, research on its application in dye adsorption is necessary.…”

Section: Resultsmentioning

confidence: 99%

Photo and Humidity Responsive Mesoporous Poly(ionic Liquid) Membrane for Selective Dye Adsorption

Lü

Zhao³

et al. 2017

ChemistrySelect

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“…The releasep rocesses were monitored by UV/Vis spectroscopy in pure DMFa nd saturated solutionso fN aCl in DMF. [18] The results showedt hat in the presence of NaCl the cationic dyes were gradually released, while in pure DMF without NaCl the dye molecules were hardly released ( Figure S12). Hence, we can safely conclude that selective absorption is due to the interaction of the cationic dyes with the anionic framework.…”

Section: Resultsmentioning

confidence: 99%

An Anionic Interpenetrated Zeolite‐Like Metal–Organic Framework Composite As a Tunable Dual‐Emission Luminescent Switch for Detecting Volatile Organic Molecules

Xie

et al. 2016

Chemistry A European J

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The luminescent MOF [(CH ) NH ] [(Zn O)L]⋅5 DMF (NENU-519, NENU=Northeast Normal University) with a zeolite BCT topology was successfully synthesized. It is a rare example of a two-fold interpenetrated framework with a zeolite topology. NENU-519 demonstrates the ability to selectively adsorb cationic dyes. Furthermore we developed Rh6@NENU-519 (Rh6=Rhodamine 6G) as a dual-emitting sensor for probing different volatile organic molecules (VOMs) due to an energy transfer between L and the dye. The composite can be used to distinguish the isomers of o-, m-, and p-xylene and ethylbenzene using the emission-peak-height ratios of L to the dye as detectable signals, in which the readout signals are involved in the interactions between the dye@MOF composite and the guest analytes. Moreover, Rh6@NENU-519 can serve as a luminescent switch for the detection of different aromatic compounds, like benzene, benzene substituted with different groups, and pyridine. In other words, the Rh6@NENU-519 composite can be used as molecular decoder of the structural information of different VOMs into recognizable luminescent signals. Hopefully this work will open a new corridor to develop luminescent guest@MOF composites as sensors for practical applications.

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“…[1,2] However the constituents of wastewater,i ncluding oils, [3][4][5] dyes, [6][7][8] and bacteria, [9,10] are usually complex, making wastewater cleanup difficult. [1,2] However the constituents of wastewater,i ncluding oils, [3][4][5] dyes, [6][7][8] and bacteria, [9,10] are usually complex, making wastewater cleanup difficult.…”

Section: Introductionmentioning

confidence: 99%

Polypropylene Nonwoven Fabric@Poly(ionic liquid)s for Switchable Oil/Water Separation, Dye Absorption, and Antibacterial Applications

et al. 2018

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Pollutants in wastewater include oils, dyes, and bacteria, making wastewater cleanup difficult. Multifunctional wastewater treatment media consisting of poly(ionic liquid)-grafted polypropylene (PP) nonwoven fabrics (PP@PIL) are prepared by a simple and scalable surface-grafting process. The fabricated PP@PIL fabrics exhibit impressive switchable oil/water separation (η>99 %) and dye absorption performance (q=410 mg g ), as well as high antibacterial properties. The oil/water separation can be easily switched by anion exchanging of the PIL segments. Moreover, the multiple functions (oil/water separation, dye absorption, and antibacterial properties) occurred at the same time, and did not interfere with each other. The multifunctional fibrous filter can be easily regenerated by washing with an acid solution, and the absorption capacity is maintained after many recycling tests. These promising features make PIL-grafted PP nonwoven fabric a potential one-step treatment for multicomponent wastewater.

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A new microporous anionic metal–organic framework as a platform for highly selective adsorption and separation of organic dyes

Abstract: In this work, we report a new microporous negatively charged metal–organic framework, and its utilization as a platform for the highly selective adsorption and separation of organic dyes through an ion-exchange process.

Cited by 182 publications

References 67 publications

Photo and Humidity Responsive Mesoporous Poly(ionic Liquid) Membrane for Selective Dye Adsorption

Photo and Humidity Responsive Mesoporous Poly(ionic Liquid) Membrane for Selective Dye Adsorption

An Anionic Interpenetrated Zeolite‐Like Metal–Organic Framework Composite As a Tunable Dual‐Emission Luminescent Switch for Detecting Volatile Organic Molecules

Polypropylene Nonwoven Fabric@Poly(ionic liquid)s for Switchable Oil/Water Separation, Dye Absorption, and Antibacterial Applications

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