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Abstract
The ZIF-8 crystals were successfully postsynthetically modified using methylamine (MA), ethylenediamine (ED), and N, N
-dimethylethylenediamine (MMEN) to improve their adsorption performance toward CO2. Results showed that, compared with the original ZIF-8, the BET specific surface area of MA-ZIF-8, MMEN-ZIF-8, and ED-ZIF-8 has increased by 118.2%, 92.0%, and 29.8%, respectively. In addition, their total pore volume increased separately by 130.8%, 100%, and 48.7%. The adsorption capacities of CO2 on the amine-modified ZIF-8 samples followed the order
. The CO2 adsorption capacities at 298 K on MA-ZIF-8, MMEN-ZIF-8, and ED-ZIF-8 were increased by 118.2%, 90.2%, and 29.8%, respectively. What is more, the CO2/N2 selectivities calculated using an IAST model of the amine@ZIF-8 samples at 0.01 bar and 298 K were also significantly improved and followed the order
, which increased by 173.0%, 121.4%, and 22.6%, respectively. The isosteric heat of CO2 adsorption (
) on the MA-ZIF-8, MMEN-ZIF-8, and ED-ZIF-8 all becomes higher, while
of N2 on these samples was slightly lower in comparison with that on the ZIF-8. Furthermore, after six recycle runs of gravimetric CO2 adsorption-desorption on MA-ZIF-8, the adsorption performance of CO2 is still very good, indicating that the MA-ZIF-8 sample has good regeneration performance and can be applied into industrial CO2 adsorption and separation.
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Ramirez-Vidal P, Suárez-García F, Canevesi RLS, Castro-Muñiz A, Gadonneix P, Paredes JI, Celzard A, Fierro V. Irreversible deformation of hyper-crosslinked polymers after hydrogen adsorption. J Colloid Interface Sci 2021; 605:513-527. [PMID: 34340036 DOI: 10.1016/j.jcis.2021.07.104] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Revised: 07/16/2021] [Accepted: 07/19/2021] [Indexed: 11/16/2022]
Abstract
Hyper-crosslinked polymers (HCPs) have been produced by the Friedel-Crafts reaction using anthracene, benzene, carbazole or dibenzothiophene as precursors and dimethoxymethane as crosslinker, and the effect of graphene oxide (GO) addition has been studied. The resulting HCPs were highly microporous with BET areas (ABET) between 590 and 1120 m2g-1. The benzene-derived HCP (B1FeM2) and the corresponding composite with GO (B1FM2-GO) exhibited the highest ABET and were selected to study their hydrogen adsorption capacities in the pressure range of 0.1 - 14 MPa at 77 K. The maximum H2 excess uptake was 2.1 and 2.0 wt% for B1FeM2 and B1FeM2-GO, respectively, at 4 MPa and 77 K. The addition of GO reduced the specific surface area but increased the density of the resultant HCP-GO composites, which is beneficial for practical applications and proves that materials giving higher gravimetric storage capacities are not necessarily those that offer higher volumetric capacities. H2 adsorption-desorption cycles up to 14 MPa showed irreversible deformation of both HCP and HCP-GO materials, which calls into question their application for hydrogen adsorption at pressures above 4 MPa.
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Affiliation(s)
- Pamela Ramirez-Vidal
- Institut Jean Lamour (IJL), Université de Lorraine, CNRS, F-88000 Epinal, France
| | - Fabián Suárez-García
- Instituto de Ciencia y Tecnología del Carbono, INCAR-CSIC, c/Francisco Pintado Fe, 26, 33011 Oviedo, Spain.
| | - Rafael L S Canevesi
- Institut Jean Lamour (IJL), Université de Lorraine, CNRS, F-88000 Epinal, France
| | - Alberto Castro-Muñiz
- Instituto de Ciencia y Tecnología del Carbono, INCAR-CSIC, c/Francisco Pintado Fe, 26, 33011 Oviedo, Spain
| | - Philippe Gadonneix
- Institut Jean Lamour (IJL), Université de Lorraine, CNRS, F-88000 Epinal, France
| | - Juan Ignacio Paredes
- Instituto de Ciencia y Tecnología del Carbono, INCAR-CSIC, c/Francisco Pintado Fe, 26, 33011 Oviedo, Spain
| | - Alain Celzard
- Institut Jean Lamour (IJL), Université de Lorraine, CNRS, F-88000 Epinal, France
| | - Vanessa Fierro
- Institut Jean Lamour (IJL), Université de Lorraine, CNRS, F-88000 Epinal, France.
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Ramirez-Vidal P, Canevesi RLS, Sdanghi G, Schaefer S, Maranzana G, Celzard A, Fierro V. A Step Forward in Understanding the Hydrogen Adsorption and Compression on Activated Carbons. ACS APPLIED MATERIALS & INTERFACES 2021; 13:12562-12574. [PMID: 33661600 DOI: 10.1021/acsami.0c22192] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Hydrogen adsorption on activated carbons (ACs) is a promising alternative to compression and liquefaction for storing hydrogen. Herein, we have studied hydrogen adsorption on six commercial ACs (CACs) with surface areas ranging from 996 to 2216 m2 g-1 in a temperature range of 77 to 273 K and pressures up to 15 MPa. Excess hydrogen adsorption capacities of 2.3 to 5.8 wt % were obtained at 77 K and 4 MPa. We demonstrated that, contrary to what is normally done, hydrogen capacity is more accurately predicted by the surface area determined by the nonlocal density functional theory method applied to N2 and CO2 adsorption data than by the Brunauer-Emmett-Teller (BET) area. The modified Dubinin-Astakhov (MDA) equation was used to fit the experimental adsorption data, and the relationship between the MDA parameters (nmax, Va, α, and β) and the textural properties of the CACs was determined for the first time. We concluded that the nmax and Va parameters are related to the BET area, while the α and β parameters are related to the average micropore size and total pore volume, respectively. α and β were used to evaluate the enthalpy and entropy of adsorption and we show that these parameters can be used to assess the best carbon for hydrogen storage or compression.
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Affiliation(s)
| | | | - Giuseppe Sdanghi
- Université de Lorraine, CNRS, IJL, Epinal F-88000, France
- Université de Lorraine, CNRS, LEMTA, Nancy F-54000, France
| | | | - Gaël Maranzana
- Université de Lorraine, CNRS, LEMTA, Nancy F-54000, France
| | - Alain Celzard
- Université de Lorraine, CNRS, IJL, Epinal F-88000, France
| | - Vanessa Fierro
- Université de Lorraine, CNRS, IJL, Epinal F-88000, France
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Ramezani MS, Ozdemir J, Khosropour AR, Beyzavi H. Sulfur-Decorated Hyper-Cross-Linked Coal Tar: A Microporous Organic Polymer for Efficient and Expeditious Mercury Removal. ACS APPLIED MATERIALS & INTERFACES 2020; 12:44117-44124. [PMID: 32930561 DOI: 10.1021/acsami.0c10617] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Hyper-cross-linked microporous organic polymers are a class of porous materials that have captured widespread attention owing to their high surface areas and wide range of monomeric sources. Balancing economy with performance is the initial hurdle when designing effective hyper-cross-linked microporous organic polymers. Herein, we demonstrated an inexpensive sulfurated solvent-knitted hyper-cross-linked microporous polymer scaffold, named sulfur-decorated hyper-cross-linked coal tar (CTHP-SES), utilizing coal tar as an aromatic monomer with numerous positions for potential chelation of toxic metals, particularly mercury, from water. The resulting material illustrated selective adsorption of mercury from both water (1037 mg g-1) and the gas phase (416 mg g-1) with rapid kinetics (183.67 mg min-1 g-1), good recyclability (4 runs), and excellent stability under both strong basic and acidic conditions. CTHP-SES was able to reduce the concentration of the Hg(II) solution from 1 mg L-1 to 32 μg L-1 after 10 min due in part to the promising distribution coefficient (Kd = 2.371 × 106 mL g-1). These results show that CTHP-SES offers a promising and practical platform to cope with a variety of environmental contaminations.
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Affiliation(s)
- M Sadegh Ramezani
- Department of Chemistry, University of Isfahan, Isfahan 81746-73441, Iran
| | - John Ozdemir
- Department of Chemistry and Biochemistry, University of Arkansas, Fayetteville, Arkansas 72701, United States
| | - Ahmad R Khosropour
- Department of Chemistry, University of Isfahan, Isfahan 81746-73441, Iran
- Department of Chemistry and Biochemistry, University of Arkansas, Fayetteville, Arkansas 72701, United States
| | - Hudson Beyzavi
- Department of Chemistry and Biochemistry, University of Arkansas, Fayetteville, Arkansas 72701, United States
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Anfar Z, Amedlous A, Majdoub M, El Fakir AA, Zbair M, Ait Ahsaine H, Jada A, El Alem N. New amino group functionalized porous carbon for strong chelation ability towards toxic heavy metals. RSC Adv 2020; 10:31087-31100. [PMID: 35520655 PMCID: PMC9056399 DOI: 10.1039/d0ra05220e] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2020] [Accepted: 08/16/2020] [Indexed: 12/22/2022] Open
Abstract
Herein, ethylenediamine functionalized porous carbon (PC-ED/1.5) was synthesized, then characterized by various methods and finally used as a functional material for Cu(ii) and Pb(ii) ion removal from water. XPS revealed the presence of numerous functionalities within the surface of PC including -NH and C-N-C groups. Furthermore, S BET, RS, XRD and FTIR analyses confirmed the changes implemented on the PC surface. Thereafter, a systematic study was implemented to analyze the interactions of the PC-ED/1.5 surface with Cu(ii) and Pb(ii) heavy metal ions. Hence, adsorption experiments showed that the PC-ED/1.5 exhibits maximum adsorption capacities of 123.45 mg g-1 and 140.84 mg g-1 for Cu(ii) and Pb(ii), respectively. Moreover, in situ electrostatic interactions occurring between the divalent cation and the PC-ED/1.5 functional groups was investigated. The mechanism involves chelation processes, electrostatic interactions and mechanical trapping of the metal ions in the adsorbent pores. Interestingly, a synergistic effect of the pores and surface active sites was observed. Finally, by using alginate bio-polymer we prepared membrane films of PC-ED/1.5 which showed long-term stability, regeneration capabilities and high mass recovery.
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Affiliation(s)
- Zakaria Anfar
- Laboratory of Materials & Environment (LME), Ibn Zohr University Agadir 80000 Morocco
- Institute of Materials Science of Mulhouse (IS2M-CNRS), Haute Alsace University (UHA) Mulhouse 68100 France
- Strasbourg University Strasbourg 67081 France
| | - Abdallah Amedlous
- Laboratory of Materials, Catalysis & Valorization of Natural Resources, Hassan II University Casablanca 20650 Morocco
| | - Mohammed Majdoub
- Laboratory of Materials, Catalysis & Valorization of Natural Resources, Hassan II University Casablanca 20650 Morocco
| | - Abdellah Ait El Fakir
- Laboratory of Materials & Environment (LME), Ibn Zohr University Agadir 80000 Morocco
- Institute of Materials Science of Mulhouse (IS2M-CNRS), Haute Alsace University (UHA) Mulhouse 68100 France
| | - Mohamed Zbair
- Laboratory of Catalysis & Materials Corrosion. Chouaib Doukkali University El Jadida 24000 Morocco
| | - Hassan Ait Ahsaine
- Chemical and Biochemical Sciences (CBS), Mohamed VI Polytechnic University Lot 660-Hay Moulay Rachid Benguerir Morocco
- Laboratoire de Chimie Appliquée des Matériaux, Centre des Sciences des Matériaux, Faculty of Sciences, Mohammed V University Rabat Morocco
| | - Amane Jada
- Institute of Materials Science of Mulhouse (IS2M-CNRS), Haute Alsace University (UHA) Mulhouse 68100 France
- Strasbourg University Strasbourg 67081 France
| | - Noureddine El Alem
- Laboratory of Materials & Environment (LME), Ibn Zohr University Agadir 80000 Morocco
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