1
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Li Y, Liu X, Guo Q. Adsorption Mechanisms of CO 2 on Macroporous Ion-Exchange Resin Organic Amine Composite Materials by the Density Functional Theory. ACS OMEGA 2024; 9:17541-17550. [PMID: 38645365 PMCID: PMC11025073 DOI: 10.1021/acsomega.4c00587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Revised: 03/04/2024] [Accepted: 03/28/2024] [Indexed: 04/23/2024]
Abstract
The adsorption mechanisms of CO2 on macroporous cation exchange resin (MCER), D001 ion-exchange resin, and macroporous ion-exchange resin organic amine composite materials (MCER-DEA and D001-PEI) were studied by density functional theory (DFT). The adsorption energies and Mulliken atomic charges in the adsorption process were analyzed, indicating that CO2 on MCER and D001 were physisorbed. The adsorption heat of the adsorption process of MCER-DEA and D001-PEI was calculated by the Monte Carlo method, and it was found that the adsorption process of CO2 by MCER-DEA and D001-PEI was both physical adsorption and chemical adsorption. Besides, the chemical adsorption mechanism of CO2 by MCER-DEA and D001-PEI was investigated by analyzing the free energy barrier and the Gibbs free energy change of the involved chemical reactions and the results showed that the free energy barrier required for MCER-DEA to generate zwitterion was 26.23 kcal/mol, which is 1.74 times that of D001-PEI (15.04 kcal/mol); meanwhile, the free energy barriers of the deprotonation process of zwitterions in MCER-DEA and D001-PEI were 16.23 and 9.89 kcal/mol, respectively, indicating that D001-PEI chemically adsorbs CO2 and requires more energy than MCER-DEA chemical adsorption of CO2. D001-PEI is more conducive to the chemical adsorption of CO2. In addition, H2O molecules were incorporated on the polymer models to study the influence of humidity on the CO2 adsorption mechanism. The analysis revealed that the adsorption of CO2 slowed under humid conditions.
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Affiliation(s)
- Yan Li
- State Key Laboratory Base
of Eco-Chemical Engineering in College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Xinmin Liu
- State Key Laboratory Base
of Eco-Chemical Engineering in College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Qingjie Guo
- State Key Laboratory Base
of Eco-Chemical Engineering in College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China
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2
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Pan T, Yang K, Dong X, Zuo S, Chen C, Li G, Emwas AH, Zhang H, Han Y. Strategies for high-temperature methyl iodide capture in azolate-based metal-organic frameworks. Nat Commun 2024; 15:2630. [PMID: 38521857 PMCID: PMC10960856 DOI: 10.1038/s41467-024-47035-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 03/14/2024] [Indexed: 03/25/2024] Open
Abstract
Efficiently capturing radioactive methyl iodide (CH3I), present at low concentrations in the high-temperature off-gas of nuclear facilities, poses a significant challenge. Here we present two strategies for CH3I adsorption at elevated temperatures using a unified azolate-based metal-organic framework, MFU-4l. The primary strategy leverages counter anions in MFU-4l as nucleophiles, engaging in metathesis reactions with CH3I. The results uncover a direct positive correlation between CH3I breakthrough uptakes and the nucleophilicity of the counter anions. Notably, the optimal variant featuring SCN- as the counter anion achieves a CH3I capacity of 0.41 g g-1 at 150 °C under 0.01 bar, surpassing all previously reported adsorbents evaluated under identical conditions. Moreover, this capacity can be easily restored through ion exchange. The secondary strategy incorporates coordinatively unsaturated Cu(I) sites into MFU-4l, enabling non-dissociative chemisorption for CH3I at 150 °C. This modified adsorbent outperforms traditional materials and can be regenerated with polar organic solvents. Beyond achieving a high CH3I adsorption capacity, our study offers profound insights into CH3I capture strategies viable for practically relevant high-temperature scenarios.
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Affiliation(s)
- Tingting Pan
- Advanced Membranes and Porous Materials Center (AMPM), Physical Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST), Jeddah, Thuwal, Saudi Arabia
| | - Kaijie Yang
- Advanced Membranes and Porous Materials Center (AMPM), Physical Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST), Jeddah, Thuwal, Saudi Arabia
| | - Xinglong Dong
- School of Chemistry, University of Lincoln, Brayford Pool, Lincoln, United Kingdom
| | - Shouwei Zuo
- KAUST Catalysis Center (KCC), Physical Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST), Jeddah, Thuwal, Saudi Arabia
| | - Cailing Chen
- Advanced Membranes and Porous Materials Center (AMPM), Physical Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST), Jeddah, Thuwal, Saudi Arabia
| | - Guanxing Li
- Advanced Membranes and Porous Materials Center (AMPM), Physical Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST), Jeddah, Thuwal, Saudi Arabia
| | - Abdul-Hamid Emwas
- Imaging and Characterization Core Lab, King Abdullah University of Science and Technology (KAUST), Jeddah, Thuwal, Saudi Arabia
| | - Huabin Zhang
- KAUST Catalysis Center (KCC), Physical Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST), Jeddah, Thuwal, Saudi Arabia
| | - Yu Han
- Advanced Membranes and Porous Materials Center (AMPM), Physical Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST), Jeddah, Thuwal, Saudi Arabia.
- School of Emergent Soft Matter, South China University of Technology, Guangzhou, China.
- Center for Electron Microscopy, South China University of Technology, Guangzhou, China.
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3
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Yaqoob T, Ahmad M, Faiz Y, Ali F, Farooq A, Faiz F, Shah A, Irshad MA, Irfan N, Ali N, Mehmood S. Retention of methyl iodide on metal and TEDA impregnated activated carbon using indigenously developed setup. ENVIRONMENTAL RESEARCH 2023; 238:117133. [PMID: 37729960 DOI: 10.1016/j.envres.2023.117133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 08/25/2023] [Accepted: 09/12/2023] [Indexed: 09/22/2023]
Abstract
Removal of methyl iodide (CH3I) from the air present within nuclear facilities is a critical issue. In case of any nuclear accident, there is a great need to mitigate the radioactive organic iodide immediately as it accumulates in human bodies, causing severe consequences. Current research focuses on removing organic iodides, for which the surface of activated carbon (AC) was modified by impregnating it with different metals individually, i.e. Ag, Ni, Zn, Cu and with the novel combination of these four metals (AZNC). After the impregnation of metals, triethylenediamine (TEDA) was coated on metal impregnated activated carbon (IAC) surface. The adsorption capacity of the combination of four metals IAC was found to be 276 mg/g as the maximum for the trapping of CH3I. Whereas TEDA-metal impregnation on ACs enhanced the removal efficiency of CH3I up to 352 mg/g. After impregnation, adsorption capacity of AZNC and AZNCT is significantly higher as compared to AC. According to the finding, t5% of AZNCT IAC is 46 min, which is considerably higher than the t5% of other tested adsorbents. According to isotherm fitting data, Langmuir isotherm was found superior for describing CH3I sorption onto AC and IACs. Kinetics study shows that pseudo second order model represented the sorption of CH3I more accurately than the pseudo first order. Thermodynamic studies gave negative value of ΔG which shows that the reaction is spontaneous in nature. Based on the findings, AZNCT IAC appears to have a great potential for air purification applications in order to obtain clean environment.
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Affiliation(s)
- Talhat Yaqoob
- Hazardous Air Pollutants Laboratory, Pakistan Institute of Engineering & Applied Sciences, Islamabad, Pakistan; Department of Chemistry, Hazara University, Mansehra, Pakistan
| | - Masroor Ahmad
- Hazardous Air Pollutants Laboratory, Pakistan Institute of Engineering & Applied Sciences, Islamabad, Pakistan
| | - Yasir Faiz
- Chemistry Division, Directorate of Science, Pakistan Institute of Nuclear Science & Technology (PINSTECH), Islamabad, Pakistan
| | - Farman Ali
- Department of Chemistry, Hazara University, Mansehra, Pakistan
| | - Amjad Farooq
- Hazardous Air Pollutants Laboratory, Pakistan Institute of Engineering & Applied Sciences, Islamabad, Pakistan
| | - Faisal Faiz
- College of Electronics and Information Engineering, Shenzhen University, Shenzhen, China
| | - Attaullah Shah
- National Institute of Lasers and Optronics College, Pakistan Institute of Engineering and Applied Sciences, Nilore, Islamabad, 45650, Pakistan
| | - Muhammad Asim Irshad
- Hazardous Air Pollutants Laboratory, Pakistan Institute of Engineering & Applied Sciences, Islamabad, Pakistan
| | - Naseem Irfan
- Hazardous Air Pollutants Laboratory, Pakistan Institute of Engineering & Applied Sciences, Islamabad, Pakistan
| | - Nisar Ali
- Key Laboratory for Palygorskite Science and Applied Technology of Jiangsu Province, National & Local Joint Engineering Research Center for Mineral Salt Deep Utilization, Faculty of Chemical Engineering, Huaiyin Institute of Technology, Huaian, 223003, PR China
| | - Sahid Mehmood
- Department of Chemistry, Hazara University, Mansehra, Pakistan.
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4
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Ahad J, Ahmad M, Farooq A, Waheed K, Irfan N. Removal of iodine by dry adsorbents in filtered containment venting system after 10 years of Fukushima accident. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023:10.1007/s11356-023-27485-1. [PMID: 37231136 DOI: 10.1007/s11356-023-27485-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Accepted: 05/03/2023] [Indexed: 05/27/2023]
Abstract
Radioactive iodine is a hazardous fission product and a major concern for public health. Special attention is paid to iodine out of 80 fission products because of its short half-life of 8.02 days, high activity, and potential health hazards like its irreversible accumulation in thyroid gland and ability to cause thyroid cancer locally. Radioactive iodine can get released in the form of aerosols (cesium iodide), elemental iodine, and organic iodide after a nuclear accident and can cause off-site and on-site contamination. Filtered containment venting system (FCVS) is a safety system whose main objective is mitigation of severe accidents via controlled venting and removal of different forms of iodine to ensure safety of people and environment. After nuclear accidents like Fukushima, extensive research has been done on the removal of iodine by using dry scrubbers. This review paper presents research status of iodine removal by dry adsorbents especially after 10 years of Fukushima to assess the progress, research gap, and challenges that require more attention. A good adsorbent should be cost-effective; it should have high selective adsorption towards iodine, high thermal and chemical stability, and good loading capacity; and its adsorption should remain unaffected by aging and the presence of inhibitors like CO, NO2, CH3Cl, H2O, and Cl2 and radiation. Research on different dry adsorbents was discussed, and their capability as a potential filter for FCVS was reviewed on the basis of all the above-mentioned features. Metal fiber filters have been widely used for removal of aerosols especially micro- and nanoscale aerosols. For designing a metal fiber filter, optimal size or combination of sizes of fibers, number of layers, and loading capacity of filter should be decided according to feasibility and requirement. Balance between flow resistance and removal efficiency is also very important. Sand bed filters were successful in retention of aerosols, but they showed low trapping of iodine and no trapping of methyl iodide at all. For iodine and methyl iodide removal, many adsorbents like activated carbon, zeolites, metal organic frameworks (MOFs), porous organic frameworks (POPs), silica, aerogels, titanosilicates, etc. have been used. Impregnated activated carbon showed good results but low auto-ignition temperature and decline in adsorption due to aging and inhibitors like NOx made them less suitable. Silver zeolites have been very successful in methyl iodide and iodine removal, but they are expensive and affected by presence of CO. Titanosilicates, macroreticular resins, and chalcogels were also studied and they showed good adsorption capacities, but their thermal stability was low. Other adsorbents like silica, MOFs, aerogels, and POPs also showed promising results for iodine adsorption and good thermal stability, but very limited or no research is available on their performance in severe accident conditions. This review will be very helpful for researchers to understand the merits and demerits of different types of dry adsorbents, the important operating parameters that need optimization for designing an efficient scrubber, margin of research, and foreseeable challenges in removal of different forms of iodine.
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Affiliation(s)
- Jawaria Ahad
- Department of Nuclear Engineering, Pakistan Institute of Engineering and Applied Sciences, Islamabad, Pakistan.
| | - Masroor Ahmad
- Department of Nuclear Engineering, Pakistan Institute of Engineering and Applied Sciences, Islamabad, Pakistan
| | - Amjad Farooq
- Department of Nuclear Engineering, Pakistan Institute of Engineering and Applied Sciences, Islamabad, Pakistan
| | - Khalid Waheed
- Department of Nuclear Engineering, Pakistan Institute of Engineering and Applied Sciences, Islamabad, Pakistan
| | - Naseem Irfan
- Department of Nuclear Engineering, Pakistan Institute of Engineering and Applied Sciences, Islamabad, Pakistan
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5
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Shi YZ, Hu QH, Gao X, Zhang L, Liang RP, Qiu JD. A Flexible Indium-based Metal-Organic Framework with Ultrahigh Adsorption Capacity for Iodine Removal from Seawater. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
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6
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Lin H, Chebbi M, Monsanglant-Louvet C, Marcillaud B, Roynette A, Doizi D, Parent P, Laffon C, Grauby O, Ferry D. KI and TEDA influences towards the retention of radiotoxic CH 3I by activated carbons. JOURNAL OF HAZARDOUS MATERIALS 2022; 431:128548. [PMID: 35228073 DOI: 10.1016/j.jhazmat.2022.128548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 02/04/2022] [Accepted: 02/21/2022] [Indexed: 06/14/2023]
Abstract
Activated carbons (AC) are widely used within the ventilation networks of nuclear facilities to trap volatile iodine species. In this paper, the performances of various commercial activated carbons towards the trapping of γ-labelled methyl iodide were evaluated in semi-pilot scale under different R.H. according to normalized procedures. A combination between the retention performances and the physico-chemical properties as deduced from several techniques was performed to gain insights about the AC influencing parameters on γ-CH3I capture. Different trends were obtained depending on the impregnant nature and the studied conditions. A high sensitivity of KI/AC towards water vapor was outlined. At R.H. = 40%. The enhancement of water uptake by KI/AC as deduced from water adsorption experiments, leads to decrease the available microporosity for CH3I physisorption, inducing therefore the reduction of performances as a function of KI content at these conditions. At R.H. = 90%, the adsorption mechanism was found to be governed by isotopic exchange reaction since 90% of the microporosity was occupied by water molecules. Therefore, a slight increase of DF was obtained in these conditions. This sensitivity was found to be of a lesser extent for TEDA/AC displaying the highest retention performances whatever the studied condition.
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Affiliation(s)
- H Lin
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PSN-RES, Saclay 91192, Gif-sur-Yvette, France
| | - M Chebbi
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PSN-RES, Saclay 91192, Gif-sur-Yvette, France.
| | - C Monsanglant-Louvet
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PSN-RES, Saclay 91192, Gif-sur-Yvette, France
| | - B Marcillaud
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PSN-RES, Saclay 91192, Gif-sur-Yvette, France
| | - A Roynette
- Institut de Radioprotection et de Sûreté Nucléaire (IRSN), PSN-RES, Saclay 91192, Gif-sur-Yvette, France
| | - D Doizi
- Commissariat à l'Énergie Atomique (CEA), DEN/DES/ISAS/DPC/SECR/LRMO, Gif-sur-Yvette 91191, France
| | - P Parent
- Aix Marseille University, CNRS, CINaM, Marseille, France
| | - C Laffon
- Aix Marseille University, CNRS, CINaM, Marseille, France
| | - O Grauby
- Aix Marseille University, CNRS, CINaM, Marseille, France
| | - D Ferry
- Aix Marseille University, CNRS, CINaM, Marseille, France
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7
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Huang JF, Hu HC, Deng SQ, Cai SL, Fan J, Zhang WG, Zheng SR. A Ni( ii) metal–organic framework with helical channels for the capture of iodine via guest exchange induced amorphization. NEW J CHEM 2022. [DOI: 10.1039/d1nj06140b] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A Ni(ii) MOF based on a imidazole–tetrazole heterotopic tripodal ligand was constructed. It exhibits abilities for the stable capture of iodine molecules present in cyclohexane, water, and vapor, via amorphization induced by guest exchange.
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Affiliation(s)
- Jie-Fen Huang
- School of Chemistry, Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, South China Normal University, Guangzhou, 510006, P. R. China
| | - Hao-Chen Hu
- School of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, Shanghai, 201620, China
| | - Shu-Qi Deng
- Institute for Sustainable Energy/College of Sciences, Shanghai University, Shanghai, 200444, P. R. China
| | - Song-Liang Cai
- School of Chemistry, Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, South China Normal University, Guangzhou, 510006, P. R. China
| | - Jun Fan
- School of Chemistry, Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, South China Normal University, Guangzhou, 510006, P. R. China
| | - Wei-Guang Zhang
- School of Chemistry, Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, South China Normal University, Guangzhou, 510006, P. R. China
| | - Sheng-Run Zheng
- School of Chemistry, Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, South China Normal University, Guangzhou, 510006, P. R. China
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8
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Choi BS, Kim SB, Moon J, Seo BK. Evaluation of decontamination factor of radioactive methyl iodide on activated carbons at high humid conditions. NUCLEAR ENGINEERING AND TECHNOLOGY 2021. [DOI: 10.1016/j.net.2020.10.020] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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9
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Gogia A, Das P, Mandal SK. Tunable Strategies Involving Flexibility and Angularity of Dual Linkers for a 3D Metal-Organic Framework Capable of Multimedia Iodine Capture. ACS APPLIED MATERIALS & INTERFACES 2020; 12:46107-46118. [PMID: 32957781 DOI: 10.1021/acsami.0c13094] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The widespread use of nuclear power poses severe health and environmental risks owing to the nonregulated release and disposal of radioactive wastes in the environment. Among these wastes, the capture and removal of radioactive iodine poses a big challenge. To develop a novel material for capturing molecular iodine, we have strategically synthesized a nitrogen-rich three-dimensional (3D) metal-organic framework (MOF), {[Mn2(oxdz)2(tpbn)(H2O)2]·2C2H5OH}n (1), utilizing a bent heterocyclic dicarboxylate linker (H2oxdz: (4,4'-(1,3,4-oxadiazole-2,5-diyl)dibenzoic acid)) and a flexible bis(tridentate) ligand (tpbn: N, N', N″, N‴-tetrakis(2-pyridylmethyl)-1,4-diaminobutane). Based on its single-crystal structure, 1 is an eightfold interpenetrated 3D framework, consisting of a unique 4-connected {Mn2(tpbn)} subunit, in which the pores line up with the nitrogen atoms of the oxadiazole moiety. This can be considered as a big leap for the development of 3D MOFs using flexible bis(tridentate) ligands. To emphasize the role of the flexible methylene chain length in such ligand in the dimensionality of the resultant framework, the tphn (N, N', N″, N‴-tetrakis(2-pyridylmethyl)-1,6-diaminohexane) ligand with two additional methylene groups provides a one-dimensional (1D) CP {[Mn2(oxdz)2(tphn)(H2O)]·CH3OH}n (2). This spacer chain lengthening has a profound effect on the coordination of such ligand with Mn(II), further affecting the binding of oxdz. The inherent polarizable nature of the oxadiazole moiety and the presence of permanent pore of dimensions (19.122 × 19.253 Å2) in 1 have been exploited for the capture/removal of iodine not only from vapor and an organic solution but also from an aqueous media. It exhibits competent 100% reversible sorption of iodine with an uptake capacity of (1.1 ± 0.05) g/g of 1. The uptake value has been corroborated by both gravimetric and titrimetric analyses. The interaction of iodine with 1 has been notably studied with molecular simulations, kinetic models of sorption, field emission scanning electron microscopy (FESEM), and energy-dispersive X-ray spectroscopy (EDX) analysis. Moreover, 1 is highly stable and is recyclable without much loss of sorption capability up to five cycles.
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Affiliation(s)
- Alisha Gogia
- Department of Chemical Sciences, Indian Institute of Science Education and Research Mohali, Sector 81, Manauli PO, S.A.S. Nagar, Mohali, Punjab 140306, India
| | - Prasenjit Das
- Department of Chemical Sciences, Indian Institute of Science Education and Research Mohali, Sector 81, Manauli PO, S.A.S. Nagar, Mohali, Punjab 140306, India
| | - Sanjay K Mandal
- Department of Chemical Sciences, Indian Institute of Science Education and Research Mohali, Sector 81, Manauli PO, S.A.S. Nagar, Mohali, Punjab 140306, India
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Obruchikov AV, Magomedbekov EP, Merkushkin AO. Removal of radioactive methyliodide from the gas stream with a composite sorbent based on polyurethane foam. NUCLEAR ENGINEERING AND TECHNOLOGY 2020. [DOI: 10.1016/j.net.2019.10.019] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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11
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The composite sorption material for radioiodine trapping from air stream and the method for its preparation. J Radioanal Nucl Chem 2020. [DOI: 10.1007/s10967-020-07055-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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12
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Nakayama M, Ishida K, Watanabe K, Tanibata N, Takeda H, Maeda H, Kasuga T. First-Principles Density Functional Theory Calculations for Formic Acid Adsorption onto Hydro-Garnet Compounds. ACS OMEGA 2020; 5:4083-4089. [PMID: 32149236 PMCID: PMC7057701 DOI: 10.1021/acsomega.9b03746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Accepted: 01/31/2020] [Indexed: 06/10/2023]
Abstract
Efficient and large-scale removal of humic acid (HA) from aqueous environments is required since HA causes human health and esthetic issues. Hydro-garnet compounds, Ca3Al2(SiO4)3-x (OH)4x , have recently been suggested as HA adsorbents not only due to their superior adsorption behaviors but also because they are ubiquitous element-derived compounds. In this study, the adsorption behavior of formic acid to hydro-garnets was investigated by means of first-principles density functional theory (DFT) computations. Formic acid was chosen owing to its reasonable computational cost and inclusion of carboxylic acid as HA. Comparisons of adsorption energies for formic acid among various compounds (including platinum and kaolinite) indicate that hydro-garnet compounds are promising due to their lower (more stable) adsorption energies. Also, the optimization of composition x enables selective adsorption of formic acid against solvent water molecules. Relationships between surface electronic/atomistic structures and adsorption properties are discussed.
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Affiliation(s)
- Masanobu Nakayama
- Department
of Advanced Ceramics, Nagoya Institute of
Technology, Gokiso, Showa, Nagoya, Aichi 466-8555, Japan
- MaDiS/CMi2,
National Institute for Materials Science (NIMS), 1-2-1, Sengen, Tsukuba, Ibaraki 305-0047, Japan
- Unit
of Elements Strategy Initiative for Catalysts & Batteries (ESICB), Kyoto University, Katsura, Saikyo-ku, Kyoto 615-8520, Japan
- Frontier
Research Institute for Materials Science (FRIMS), Nagoya Institute
of Technology, Gokiso, Showa, Nagoya, Aichi 466-8555, Japan
| | - Kunihiro Ishida
- Department
of Advanced Ceramics, Nagoya Institute of
Technology, Gokiso, Showa, Nagoya, Aichi 466-8555, Japan
| | - Kentaro Watanabe
- Department
of Advanced Ceramics, Nagoya Institute of
Technology, Gokiso, Showa, Nagoya, Aichi 466-8555, Japan
| | - Naoto Tanibata
- Department
of Advanced Ceramics, Nagoya Institute of
Technology, Gokiso, Showa, Nagoya, Aichi 466-8555, Japan
- Unit
of Elements Strategy Initiative for Catalysts & Batteries (ESICB), Kyoto University, Katsura, Saikyo-ku, Kyoto 615-8520, Japan
| | - Hayami Takeda
- Department
of Advanced Ceramics, Nagoya Institute of
Technology, Gokiso, Showa, Nagoya, Aichi 466-8555, Japan
- Unit
of Elements Strategy Initiative for Catalysts & Batteries (ESICB), Kyoto University, Katsura, Saikyo-ku, Kyoto 615-8520, Japan
| | - Hirotaka Maeda
- Department
of Advanced Ceramics, Nagoya Institute of
Technology, Gokiso, Showa, Nagoya, Aichi 466-8555, Japan
| | - Toshihiro Kasuga
- Department
of Advanced Ceramics, Nagoya Institute of
Technology, Gokiso, Showa, Nagoya, Aichi 466-8555, Japan
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13
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Huang G, Huang L. Particulate copper electrodeposited on carbon felt for degradation of low concentration of methyl iodide in liquid radioactive wastes. WATER SCIENCE AND TECHNOLOGY : A JOURNAL OF THE INTERNATIONAL ASSOCIATION ON WATER POLLUTION RESEARCH 2019; 80:397-407. [PMID: 31596251 DOI: 10.2166/wst.2019.298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
In this work, the study of copper particles deposition on to carbon felt was presented by pulse electrodeposition method to electrochemically degrade methyl iodide (CH3I, 1 mg L-1) in aqueous solution. In order to solve the problems linked to the heterogeneous potential distribution in the 3-D porous structure, which lead to the so-called 'black core', we successfully used low concentration of copper salt (1 mM) and negative deposition potential (-2.5 V) to obtain Cu-nanoparticles/carbon felt (Cu-nano/CF) electrode, the copper coating improved the specific surface area of carbon felt from ∼0.07 to 0.7 m2 g-1 with high catalytic activity. Results show that 98.1% of CH3I can be removed with the Cu-nano/CF electrode in 120 min.
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Affiliation(s)
- Guangtuan Huang
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resources and Environmental Engineering, East China university of Science and Technology, Shanghai 200237, China E-mail:
| | - Li Huang
- State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, School of Resources and Environmental Engineering, East China university of Science and Technology, Shanghai 200237, China E-mail:
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14
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Electrocatalytic deiodination of methyl iodide on a copper electrode. RESEARCH ON CHEMICAL INTERMEDIATES 2019. [DOI: 10.1007/s11164-019-03817-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Jung H, Kang J, Chun H, Han B. First principles computational study on hydrolysis of hazardous chemicals phosphorus trichloride and oxychloride (PCl 3 and POCl 3) catalyzed by molecular water clusters. JOURNAL OF HAZARDOUS MATERIALS 2018; 341:457-463. [PMID: 28854386 DOI: 10.1016/j.jhazmat.2017.08.054] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Revised: 08/17/2017] [Accepted: 08/18/2017] [Indexed: 06/07/2023]
Abstract
Using first principles calculations we unveil fundamental mechanism of hydrolysis reactions of two hazardous chemicals PCl3 and POCl3 with explicit molecular water clusters nearby. It is found that the water molecules play a key role as a catalyst significantly lowing activation barrier of the hydrolysis via transferring its protons to reaction intermediates. Interestingly, torsional angle of the molecular complex at transition state is identified as a vital descriptor on the reaction rate. Analysis of charge distribution over the complex further reinforces the finding with atomic level correlation between the torsional angle and variation of the orbital hybridization state of phosphorus (P) in the complex. Electronic charge separation (or polarization) enhances thermodynamic stability of the activated complex and reduces the activation energy through hydrogen bonding network with water molecules nearby. Calculated potential energy surfaces (PES) for the hydrolysis of PCl3 and POCl3 depict their two contrastingly different profiles of double- and triple-depth wells, respectively. It is ascribed to the unique double-bonding O=P in the POCl3. Our results on the activation free energy show well agreements with previous experimental data within 7kcalmol-1 deviation.
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Affiliation(s)
- Hyunwook Jung
- Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Joonhee Kang
- Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Hoje Chun
- Integrated Science and Engineering Division, Yonsei University, Seoul 03722, Republic of Korea
| | - Byungchan Han
- Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul 03722, Republic of Korea.
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Tan XJ, Wang C, Guo XK. Theoretical study on the ring-opening hydrolysis reactions of N-alkylmaleimide dimers. Chem Phys Lett 2018. [DOI: 10.1016/j.cplett.2017.12.060] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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Huve J, Ryzhikov A, Nouali H, Lalia V, Augé G, Daou TJ. Porous sorbents for the capture of radioactive iodine compounds: a review. RSC Adv 2018; 8:29248-29273. [PMID: 35547978 PMCID: PMC9086542 DOI: 10.1039/c8ra04775h] [Citation(s) in RCA: 116] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Accepted: 08/02/2018] [Indexed: 12/17/2022] Open
Abstract
The number of studies on the capture of radioactive iodine compounds by porous sorbents has regained major importance in the last few years. In fact, nuclear energy is facing major issues related to operational safety and the treatment and safe disposal of generated radioactive waste. In particular during nuclear accidents, such as that in 2011 at Fukushima, gaseous radionuclides have been released in the off-gas stream. Among these, radionuclides that are highly volatile and harmful to health such as long-lived 129I, short-lived 131I and organic compounds such as methyl iodide (CH3I) have been released. Immediate and effective means of capturing and storing these radionuclides are needed. In the present review, we focus on porous sorbents for the capture and storage of radioactive iodine compounds. Concerns with, and limitations of, the existing sorbents with respect to operating conditions and their capacities for iodine capture are discussed and compared. In the capture of radioactive iodine compounds by porous sorbents, concerns with, and limitations of, the existing sorbents with respect to operating conditions and their capacities for iodine capture are discussed and compared.![]()
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Affiliation(s)
- Joffrey Huve
- Université de Haute-Alsace
- Equipe Matériaux à Porosité Contrôlée (MPC)
- CNRS IS2M UMR 7361
- F-68100 Mulhouse
- France
| | - Andrey Ryzhikov
- Université de Haute-Alsace
- Equipe Matériaux à Porosité Contrôlée (MPC)
- CNRS IS2M UMR 7361
- F-68100 Mulhouse
- France
| | - Habiba Nouali
- Université de Haute-Alsace
- Equipe Matériaux à Porosité Contrôlée (MPC)
- CNRS IS2M UMR 7361
- F-68100 Mulhouse
- France
| | - Virginie Lalia
- ONET Technologies
- 270 Chemin des Agriculteurs
- 26700 Pierrelatte
- France
| | | | - T. Jean Daou
- Université de Haute-Alsace
- Equipe Matériaux à Porosité Contrôlée (MPC)
- CNRS IS2M UMR 7361
- F-68100 Mulhouse
- France
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