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Wang Y, Chen Y, Zhao M, Zhang L, Zhou C, Wang H. Simulated adsorption of iodine by an amino-metal-organic framework modified with covalent bonds. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:88882-88893. [PMID: 35841504 DOI: 10.1007/s11356-022-21971-8] [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: 02/09/2022] [Accepted: 07/06/2022] [Indexed: 06/15/2023]
Abstract
Radioactive iodine in nuclear waste is increasingly harmful to the human body and the environment because of its strong radioactivity, high fluidity, easy solubility in water, and long half-life. It is very important to find clean and economical materials to recover and fix radioactive iodine. In this paper, the amino-metal-organic framework was covalently modified to obtain composite materials to improve the recycling of iodine in the environment. These adsorbents are used to adsorb iodine in water, showing outstanding adsorption performance. The adsorption data are in good agreement with the Langmuir isothermal adsorption model and pseudo-second-order kinetic model, indicating that the adsorption process is mainly monolayer adsorption and chemical adsorption. The two materials showed selective adsorption capacity for iodine in the solution containing multiple competing ions. The adsorption capacity of the covalently modified composite increased from 949.52 to 2157.44 mg/g. Compared with the amino-metal-organic framework, the modified composite contains more electron-rich groups as active sites, and forms charge transfer compounds with iodine to realize chemical adsorption. Through the simulated adsorption of ultra-high-pressure micro-jet, the material has certain working ability under high pressure, which provides a theoretical basis for the future recovery and utilization of iodine under high pressure.
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Affiliation(s)
- Yinghui Wang
- College of Chemistry and Chemical Engineering, Qinghai Normal University, No. 38, Wusi West Road, Chengxi District, Xining City, 810008, Qinghai, China
| | - Yuantao Chen
- College of Chemistry and Chemical Engineering, Qinghai Normal University, No. 38, Wusi West Road, Chengxi District, Xining City, 810008, Qinghai, China.
| | - Meng Zhao
- College of Chemistry and Chemical Engineering, Qinghai Normal University, No. 38, Wusi West Road, Chengxi District, Xining City, 810008, Qinghai, China
| | - Lili Zhang
- College of Chemistry and Chemical Engineering, Qinghai Normal University, No. 38, Wusi West Road, Chengxi District, Xining City, 810008, Qinghai, China
| | - Changyou Zhou
- College of Chemistry and Chemical Engineering, Qinghai Normal University, No. 38, Wusi West Road, Chengxi District, Xining City, 810008, Qinghai, China
| | - Haiyang Wang
- College of Chemistry and Chemical Engineering, Qinghai Normal University, No. 38, Wusi West Road, Chengxi District, Xining City, 810008, Qinghai, China
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Wang LH, Tai XS, Ren XJ. The crystal structure of [(1,10-phenanthroline-κ 2
N, N)-bis(6-phenylpyridine-2-carboxylate-κ 2
N, O)nickel(II)] monohydrate, C 36H 26N 4O 5Ni. Z KRIST-NEW CRYST ST 2022. [DOI: 10.1515/ncrs-2022-0046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
C36H26N4O5Ni, orthorhombic, P212121 (no. 19), a = 10.5860(9) Å, b = 10.6497(6) Å, c = 26.4492(15) Å, β = 90°, V = 2981.8(3) Å3, Z = 4, R
gt
(F) = 0.0341, wR
ref
(F
2) = 0.0703, T = 200 K.
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Affiliation(s)
- Li-Hua Wang
- College of Chemistry and Chemical Engineering, Weifang University , Weifang , Shandong 261061 , P. R. China
| | - Xi-Shi Tai
- College of Chemistry and Chemical Engineering, Weifang University , Weifang , Shandong 261061 , P. R. China
| | - Xiu-Jie Ren
- College of Computer Engineering, Weifang University , Weifang , Shandong 261061 , P. R. China
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Sun MY, Wang Y, Bai FY, Xing YH. Construction of manganese-based metal organic frameworks derived from aromatic dicarboxylic acids and application for the adsorption of iodine. MAIN GROUP CHEMISTRY 2022. [DOI: 10.3233/mgc-210178] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
In this work, we selected terephthalic acid or 2-amino-terephthalic acid as ligand, transition metal manganese salt as metal source under the solvothermal conditions to successfully construct two kinds of manganese-based metal-organic frameworks (Mn-MOFs): Mn3(BDC)3(H2O)2 (1) and Mn3(NH2-BDC)3(DMF)4 (2) (H2BDC = terephthalic acid; NH2-BDC = 2-amino terephthalic acid; DMF = N, N-dimethyl formamide). It was characterized by elemental analysis, IR spectrum, thermogravimetric analysis (TG), X-ray powder diffraction (PXRD) and UV-vis absorption spectrum. It was found that the packing structures of compounds 1 and 2 were constructed by the trinuclear Mn3O16 building block and exhibited different spatial structure: compound 1 was a three-dimensional structure, and 2 was a two-dimensional network structure. The iodine adsorption in cyclohexane solution properties of compounds 1 and 2 were investigated. Research results showed that the uncoordinated amino group in the structure of framework compounds has a great influence on the iodine adsorption capacity and compound 2 had good adsorption property and reusability.
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Affiliation(s)
- Ming-Yang Sun
- College of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian, P.R. China
| | - Ying Wang
- College of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian, P.R. China
| | - Feng-Ying Bai
- College of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian, P.R. China
| | - Yong-Heng Xing
- College of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian, P.R. China
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