Remarkable adsorption performance of MOF-199 derived porous carbons for benzene vapor

Wang, Chenpeng; Yin, Hang; Tian, Pengjie; Sun, Xuejiao; Pan, Xiaoyang; Chen, Kongfa; Chen, Wenjie; Wu, Qi‐Hui; Luo, Shuiyuan

doi:10.1016/j.envres.2020.109323

Cited by 54 publications

(12 citation statements)

References 45 publications

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“…Metal–organic frameworks (MOFs) are of interest for gas storage and separation as they can offer extra-large surface areas and tunable structures 13 – 16 , and have been studied for the removal of VOCs 17 – 26 . Indeed, some MOFs outperform commercial sorbents such as activated carbon fibres, activated carbon (AC) and zeolites in benzene adsorption 6 , 7 , 21 , 22 , 27 . For example, the benzene uptake by MOF-177 (Basolite Z377) 22 is 16.8 mmol g −1 at 293 K and relative pressure ( P / P 0 ) of 1 (compared with 5.6 mmol g −1 by AC 9 and 5.8 mmol g −1 by graphitized biocarbon 6 ).…”

Section: Mainmentioning

confidence: 99%

Trace removal of benzene vapour using double-walled metal–dipyrazolate frameworks

et al. 2022

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In principle, porous physisorbents are attractive candidates for the removal of volatile organic compounds such as benzene by virtue of their low energy for the capture and release of this pollutant. Unfortunately, many physisorbents exhibit weak sorbate–sorbent interactions, resulting in poor selectivity and low uptake when volatile organic compounds are present at trace concentrations. Herein, we report that a family of double-walled metal–dipyrazolate frameworks, BUT-53 to BUT-58, exhibit benzene uptakes at 298 K of 2.47–3.28 mmol g−1 at <10 Pa. Breakthrough experiments revealed that BUT-55, a supramolecular isomer of the metal–organic framework Co(BDP) (H2BDP = 1,4-di(1H-pyrazol-4-yl)benzene), captures trace levels of benzene, producing an air stream with benzene content below acceptable limits. Furthermore, BUT-55 can be regenerated with mild heating. Insight into the performance of BUT-55 comes from the crystal structure of the benzene-loaded phase (C6H6@BUT-55) and density functional theory calculations, which reveal that C–H···X interactions drive the tight binding of benzene. Our results demonstrate that BUT-55 is a recyclable physisorbent that exhibits high affinity and adsorption capacity towards benzene, making it a candidate for environmental remediation of benzene-contaminated gas mixtures.

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Section: Mainmentioning

confidence: 99%

Trace removal of benzene vapour using double-walled metal–dipyrazolate frameworks

et al. 2022

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“…Finally, the porous carbon ZMC-T was obtained after drying at 60˚C for 12 h, where C stands for porous carbon, and T stands for carbonization temperature. The charring temperature is determined by the thermogravimetric (TG) curve of sample ZM, the charring time and the heating rate were determined according our previous work [14] [15].…”

Section: Preparation Of Zm-derived Porous Carbon Zmc-tmentioning

confidence: 99%

MOF(ZM)/Potassium Citrate-Derived Composite Porous Carbon and Its Electrochemical Properties

Zhang¹,

Wang²,

Zhang³

et al. 2021

JMMCE

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Metal-organic frameworks are compounds with a reticulated skeletal structure formed by chemically bonding inorganic and organic units that are widely used in many fields, such as photocatalysis, gas separation and energy storage, because of their unique structures. In this paper, we prepared a metal-organic framework [(μ 2 -2-methylimidazolyl) 12 -Zn(ii) 6 -H 18 O 10 ] n (ZM) with well-developed pores and high specific surface area of MOFs by the solution method. And MOF-derived porous carbon was prepared by the direct charring method in an argon atmosphere using a mixture of ZM, ZM and potassium citrate as carbon precursors. Characterization analysis revealed that the maximum specific surface area of ZMPC-800-1:15 was 2014.97 m 2 •g −1 , and the pore size structure was mainly mesoporous. At a current density of 1.0 A•g −1 the specific capacitance of ZMC-800 and ZMPC-800-1:15 was 121.3 F•g −1 and 226.6 F•g −1 , respectively, with a substantial increase of 86.8%. The specific capacitance of ZMPC-800-1:15 decays to 168.8 F•g −1 , with a decay rate of 25.5%, when the current density increases to 10.0 A•g −1 . After 5000 constant current charge/ discharge cycles, the capacitance retention rate was still 96.41%. These results prove that the application of MOF-derived carbon materials in future supercapacitors is very promising.

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“…Adsorption and absorption processes can treat much higher ranges of concentration and flow rate of pollutants than others [13]. Design and synthesis of porous materials for adsorption of VOCs such as metal organic frameworks [14][15][16], porous polymers [17][18][19], zeolites [20][21][22] and active carbon [23][24][25][26], has been extensively studied.…”

Section: Introductionmentioning

confidence: 99%

Toluene removal from gas streams by an ionic liquid membrane: Experiment and modeling

Yan

Anguille

Bendahan

et al. 2021

Chemical Engineering Journal

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Remarkable adsorption performance of MOF-199 derived porous carbons for benzene vapor

Cited by 54 publications

References 45 publications

Trace removal of benzene vapour using double-walled metal–dipyrazolate frameworks

Trace removal of benzene vapour using double-walled metal–dipyrazolate frameworks

MOF(ZM)/Potassium Citrate-Derived Composite Porous Carbon and Its Electrochemical Properties

Toluene removal from gas streams by an ionic liquid membrane: Experiment and modeling

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