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Zhu Y, Wu D, Chen J, Ma N, Dai W. Boosting highly capture of trace tetracycline with a novel water-resistant and magnetic (ZIF-8)-on-(Cu-BTC@Fe3O4) composite. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2022.123797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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2
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The co-adsorption potential of metal-organic framework/activated carbon composites against both polar and non-polar volatile organic compounds in air. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Gupta N, Achary SN, Viltres H, Bae J, Kim KS. Fabrication of Na 0.4MnO 2 Microrods for Room-Temperature Oxidation of Sulfurous Gases. ACS OMEGA 2022; 7:37774-37781. [PMID: 36312367 PMCID: PMC9608406 DOI: 10.1021/acsomega.2c04773] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Accepted: 10/05/2022] [Indexed: 06/16/2023]
Abstract
Phase pure Na0.4MnO2 microrods crystallized in the orthorhombic symmetry were fabricated for the wet oxidation of H2S and SO2 gases at room temperature. The material was found highly effective for the mineralization of low concentrations of acidic gases. The material was fully regenerable after soaking in a basic H2O2 solution.
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Affiliation(s)
- Nishesh
Kumar Gupta
- Department
of Environmental Research, University of
Science and Technology (UST), Daejeon34113, Korea
- Department
of Environmental Research, Korea Institute
of Civil Engineering and Building Technology (KICT), Goyang10223, Korea
| | - Srungarpu N. Achary
- Chemistry
Division, Bhabha Atomic Research Centre, Trombay, Mumbai400085, India
| | - Herlys Viltres
- School
of Engineering Practice and Technology, McMaster University, 1280 Main Street, West Hamilton, OntarioL8S 4L8, Canada
| | - Jiyeol Bae
- Department
of Environmental Research, University of
Science and Technology (UST), Daejeon34113, Korea
- Department
of Environmental Research, Korea Institute
of Civil Engineering and Building Technology (KICT), Goyang10223, Korea
| | - Kwang Soo Kim
- Department
of Environmental Research, University of
Science and Technology (UST), Daejeon34113, Korea
- Department
of Environmental Research, Korea Institute
of Civil Engineering and Building Technology (KICT), Goyang10223, Korea
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Paz R, Gupta NK, Viltres H, Leyva C, Romero-Galarza A, Srinivasan S, Rajabzadeh AR. Lanthanides adsorption on metal-organic framework: Experimental insight and spectroscopic evidence. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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5
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Probing the origin and stability of bivalency in copper based porous coordination network and its application for H 2S gas capture. Sci Rep 2022; 12:15388. [PMID: 36100662 PMCID: PMC9470748 DOI: 10.1038/s41598-022-19808-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Accepted: 09/05/2022] [Indexed: 11/28/2022] Open
Abstract
A bivalent Cu(I,II) metal–organic framework (MOF) based on the 4,4′,4″-s-Triazine-2,4,6-triyl-tribenzoate linker was synthesized via a solvothermal method. The MOF possessed 43.8% of the Cu sites as Cu+ with a surface area of 1257 m2 g−1. The detailed spectroscopic analysis confirmed dimethylformamide (DMF) solvent as the reductant responsible for Cu+ sites in the synthesized MOF. The Cu+ sites were easily accessible and prone to oxidation in hot water or acidic gas environment. The MOF showed water-induced structural change, which could be partially recovered after soaking in DMF solvent. The synthesized MOF showed a high hydrogen sulfide (H2S) uptake capacity of 4.3 mmol g–1 at 298 K and an extremely low H2S pressure of 0.0005 bar. The adsorption capacity was the highest among Cu-based MOFs with PCN-6-M being regenerable, which made it useful for deep desulfurization applications. The adsorbed H2S was mineralized to sulfide, sulfur, and sulfates, mediated by the Cu+/Cu2+ redox cycle in the presence of adsorbed water and molecular oxygen. Thus, the study confirmed that DMF as a reductant is responsible for the origin of bivalency in PCN-6-M and possibly in other Cu-based MOFs reported in the literature. Also, the developed MOF could be a potential candidate for flue gas desulfurization and gas purification applications.
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Gupta NK, Vikrant K, Kim KS, Kim KH, Giannakoudakis DA. Regeneration strategies for metal–organic frameworks post acidic gas capture. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2022.214629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Mechanistic and Experimental Study of the CuxO@C Nanocomposite Derived from Cu3(BTC)2 for SO2 Removal. Catalysts 2022. [DOI: 10.3390/catal12070689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
A tunable and efficient strategy was adopted to synthesize highly porous nano-structured CuO−carbonized composites (CuxO@C) using Cu3(BTC)2 as a sacrificial template. The as-synthesized CuO nanocomposites exhibited hollow octahedral structures, a large surface area (89.837 m2 g−1) and a high proportion of Cu2O active sites distributed on a carbon frame. Based on DFT calculations, both the Cu atoms on the surface (CuS) and oxygen vacancy (OV) exhibited strong chemical reactivity. On the perfect CuO (111), the CuS transferred charge to O atoms on the surface and SO2 molecules. A strong adsorption energy (−1.41 eV) indicated the existence of the chemisorption process. On the oxygen-deficient CuO (111), the O2 preferably adsorbed on OV and then formed SO3 by bonding with SO2, followed by the cleavage of the O−O bond. Furthermore, the CuO nanocomposites exhibited an excellent ratio of S/Cu in SO2 removal experiments compared with CuO nanoparticles produced by coprecipitation.
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Hydrogen Sulfide Capture and Removal Technologies: A Comprehensive Review of Recent Developments and Emerging Trends. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121448] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Role of Bimetallic Solutions in the Growth and Functionality of Cu-BTC Metal-Organic Framework. MATERIALS 2022; 15:ma15082804. [PMID: 35454498 PMCID: PMC9033043 DOI: 10.3390/ma15082804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 03/28/2022] [Accepted: 04/05/2022] [Indexed: 11/29/2022]
Abstract
Bimetallic solutions play a vital role in the growth and functionality of copper trimesate (Cu-BTC) metal–organic frameworks (MOFs). The effect of Ag+, Ca2+, Mn2+, Co2+, and Zn2+ on the growth of Cu-BTC was studied by fabricating M-Cu-BTC MOFs at room temperature using bimetallic M-Cu solutions. While Ag+ in the MOF had a rod-like morphology and surface properties, divalent cations deteriorated it. Moreover, unconventional Cu+ presence in the MOF formed a new building unit, which was confirmed in all the MOFs. Apart from Ag and Mn, no other MOF showed any presence of secondary cations in the structure. While Ag-Cu-BTC showed an improved H2S uptake capacity, other M-Cu-BTC MOFs had superior organic pollutant adsorption behavior. Thus, we have demonstrated that the physicochemical properties of Cu-BTC could be modified by growing it in bimetallic solutions.
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Gupta NK, Bae J, Baek S, Kim KS. Metal-organic framework-derived NaM xO y adsorbents for low-temperature SO 2 removal. CHEMOSPHERE 2022; 291:132836. [PMID: 34762880 DOI: 10.1016/j.chemosphere.2021.132836] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 11/05/2021] [Accepted: 11/07/2021] [Indexed: 06/13/2023]
Abstract
This work reported the fabrication of NaMxOy-type adsorbents from air calcination of (Na, M)-trimesate metal-organic frameworks. NaMnxOy (NMO) crystallized as disc-shaped microsheets, whereas NaCoxOy (NCO) crystallized as smooth microsheets with surface deposition of polyhedral nanoparticles. The oxides have a surface area of 1.90-2.56 m2 g-1. The synthesized adsorbents were studied for low-temperature SO2 removal in breakthrough studies. The maximum adsorption capacity of 46.8 mg g-1 was recorded for NMO at 70 °C. The adsorption capacity increased with the increasing temperature due to the chemisorptive nature of the adsorption process. The capacity increased with the increasing bed loading and decreasing flow rate due to the improved SO2 retention time. The elemental mapping confirmed the uniform distribution of sulfur species over the oxide surface. X-ray diffraction showed the absence of metal sulfate nanoparticles in the SO2-exposed samples. The X-ray photoelectron analysis confirmed the formation of surface sulfate and bisulfate. The formation of oxidized sulfur species was mediated by hydroxyl groups over NMO and lattice oxygen over NCO. Thus, the work demonstrated here is the first such report on the use of NaMxOy-type materials for SO2 mineralization.
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Affiliation(s)
- Nishesh Kumar Gupta
- University of Science and Technology (UST), Daejeon, Republic of Korea; Department of Land, Water, and Environment Research, Korea Institute of Civil Engineering and Building Technology (KICT), Goyang, Republic of Korea
| | - Jiyeol Bae
- University of Science and Technology (UST), Daejeon, Republic of Korea; Department of Land, Water, and Environment Research, Korea Institute of Civil Engineering and Building Technology (KICT), Goyang, Republic of Korea
| | - Soyoung Baek
- Department of Land, Water, and Environment Research, Korea Institute of Civil Engineering and Building Technology (KICT), Goyang, Republic of Korea
| | - Kwang Soo Kim
- University of Science and Technology (UST), Daejeon, Republic of Korea; Department of Land, Water, and Environment Research, Korea Institute of Civil Engineering and Building Technology (KICT), Goyang, Republic of Korea.
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Zhu Y, Wu D, Chen J, Ma N, Dai W. Enhanced water-resistant performance of Cu-BTC through polyvinylpyrrolidone protection and its capture ability evaluation of methylene blue. NEW J CHEM 2022. [DOI: 10.1039/d1nj05561e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Water instability issues greatly restrict the application of Cu-BTC for cationic dye (e.g. methylene blue (MB)) capture from wastewater.
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Affiliation(s)
- Yingzhi Zhu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Science, Zhejiang Normal University, Jinhua 321004, People's Republic of China
| | - Danping Wu
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Science, Zhejiang Normal University, Jinhua 321004, People's Republic of China
| | - Jiehong Chen
- College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua, 321004, P. R. China
| | - Na Ma
- College of Geography and Environmental Sciences, Zhejiang Normal University, Jinhua, 321004, P. R. China
| | - Wei Dai
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, College of Chemistry and Life Science, Zhejiang Normal University, Jinhua 321004, People's Republic of China
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