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Su Y, Yang D, Wang Y, Ding J, Ding L, Song D. The construction of highly selective surface molecularly imprinted polymers based on Cu(II) coordination for the detection of bisphenol A. Talanta 2024; 269:125441. [PMID: 38029605 DOI: 10.1016/j.talanta.2023.125441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 11/15/2023] [Accepted: 11/18/2023] [Indexed: 12/01/2023]
Abstract
Herein, we designed and constructed a highly selective MIPs for bisphenol A (BPA) named Cu-MIPs@CS based on Cu(II) coordination. The synthesis of Cu-MIPs@CS employed a dummy template strategy and surface imprinting technology, with chitosan (CS) as the substrate linked to imprinted layers via Cu2+ bridging. 4-vinylpyridine acted as the functional monomer, capable of forming a complex with the template ketoprofen, while ethylene glycol dimethacrylate served as the cross linker. Cu-MIPs@CS exhibited a significantly enhanced imprinting factor of 14.78 for BPA, which was approximately 6.6 times higher than that of imprinted materials without Cu2+ (MIPs@CS). Cu-MIPs@CS exhibited a selective factor of 12.74 towards resorcinol, which possessed identical functional groups but a smaller size than BPA, representing an enhancement of selectivity by 12.25-fold compared to MIPs@CS. More importantly, Cu-MIPs@CS exhibited a superior discrimination ability between BPA and its structural analogue, diphenolic acid, with an excellent selective factor of 2.93, highlighting its significance in distinguish the structural analogue of BPA. In contrast, MIPs@CS lack sufficient selectivity to differentiate between them. Through exploration of adsorption mechanism of Cu-MIPs@CS, it was demonstrated that the incorporation of Cu2+ significantly reduced nonspecific adsorption, but also facilitated the creation of more selective imprinted cavities by introducing metal coordination, thereby notably enhancing the selectivity of Cu-MIPs@CS. Finally, the developed Cu-MIPs@CS were applied as the solid phase extraction adsorbent and combined with HPLC-DAD detection to establish an analytical method towards BPA in drinking water samples. The limit of detection of the method was 0.14 μg L-1 and recoveries ranged from 95.6 % to 101 %. This work provided broad prospects for construction of highly selective MIPs and accurate quantification of trace amounts of BPA.
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Affiliation(s)
- Yu Su
- College of Chemistry, Jilin University, Qianjin Street 2699, Changchun 130012, China
| | - Dandan Yang
- College of Chemistry, Jilin University, Qianjin Street 2699, Changchun 130012, China
| | - Yanjie Wang
- College of Chemistry, Jilin University, Qianjin Street 2699, Changchun 130012, China
| | - Jie Ding
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China
| | - Lan Ding
- College of Chemistry, Jilin University, Qianjin Street 2699, Changchun 130012, China; College of Chemistry, Jilin Province Research Center for Engineering and Technology of Spectral Analytical Instruments, Jilin University, Qianjin Street 2699, Changchun 130012, China.
| | - Daqian Song
- College of Chemistry, Jilin Province Research Center for Engineering and Technology of Spectral Analytical Instruments, Jilin University, Qianjin Street 2699, Changchun 130012, China
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2
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Li X, Shao K, Xu G, Xia M, Liu X, Shang Z, Fan F, Dou J. A Prussian blue analog-based copper-aluminum layered double hydroxide for cesium removal from water: fabrication, density functional theory-based molecular modeling, and the adsorption mechanism. Phys Chem Chem Phys 2024; 26:1113-1124. [PMID: 38098463 DOI: 10.1039/d3cp03879c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2024]
Abstract
A new type of adsorbent, a Prussian blue analog-based copper-aluminum layered double hydroxide (PBA@CuAl-LDH), was successfully synthesized using a one-step method for the removal of radioactive Cs+ from wastewater. The adsorption performance, characteristics and the underlying adsorption mechanism of PBA@CuAl-LDH were systematically examined. The results showed that PBA@CuAl-LDH exhibited excellent adsorption performance, with a maximum adsorption capacity of 109.2 mg g-1. Over 85% of PBA@CuAl-LDH can be recycled, and the material exhibited only a 6.6% loss in adsorption performance. The adsorption process was well-fitted using the pseudo-second-order kinetic model and the Freundlich isotherm model, revealing the surface heterogeneity of the composite adsorbent. A molecular model of PBA@CuAl-LDH was constructed by combining density functional theory and multiple instrumental characterization techniques. Our results indicate that PBA crystals can be generated between layers and on the surface. Ion exchange was revealed as the main adsorption mechanism of Cs+ by PBA@CuAl-LDH. Specifically, the interstitial spaces of the PBA crystals generated between the layers and on the surface played an important role in ion exchange. These findings provide concrete theoretical support for radioactive pollution control and have significant value in directing the fabrication of cesium removal materials and their future engineering application.
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Affiliation(s)
- Xindai Li
- College of Water Sciences, Beijing Normal University, Beijing 100875, P. R. China.
- Engineering Research Center for Groundwater Pollution Control and Remediation Ministry of Education, College of Water Sciences, Beijing Normal University, Beijing 100875, P. R. China
| | - Kexin Shao
- College of Water Sciences, Beijing Normal University, Beijing 100875, P. R. China.
- Engineering Research Center for Groundwater Pollution Control and Remediation Ministry of Education, College of Water Sciences, Beijing Normal University, Beijing 100875, P. R. China
| | - Guangming Xu
- College of Water Sciences, Beijing Normal University, Beijing 100875, P. R. China.
- Engineering Research Center for Groundwater Pollution Control and Remediation Ministry of Education, College of Water Sciences, Beijing Normal University, Beijing 100875, P. R. China
| | - Meng Xia
- College of Water Sciences, Beijing Normal University, Beijing 100875, P. R. China.
| | - Xinyao Liu
- College of Water Sciences, Beijing Normal University, Beijing 100875, P. R. China.
| | - Zhaorong Shang
- Nuclear and Radiation Safety Center, Ministry of Ecology and Environment, Beijing 100082, China
| | - Fuqiang Fan
- Advanced Institute of Natural Sciences, Beijing Normal University at Zhuhai, Zhuhai 519087, P. R. China.
| | - Junfeng Dou
- College of Water Sciences, Beijing Normal University, Beijing 100875, P. R. China.
- Engineering Research Center for Groundwater Pollution Control and Remediation Ministry of Education, College of Water Sciences, Beijing Normal University, Beijing 100875, P. R. China
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3
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Ao X, Zhou L, Jin J, Liu Y, Ouyang J, Liu Z, Shehzad H. Macroporous and ultralight polyethyleneimine-grafted chitosan/nano-TiO 2 foam as a novel adsorbent with antibacterial activity for the efficient U(VI) removal. Int J Biol Macromol 2023; 253:126966. [PMID: 37729991 DOI: 10.1016/j.ijbiomac.2023.126966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 07/23/2023] [Accepted: 09/15/2023] [Indexed: 09/22/2023]
Abstract
The radioactive contamination from the excessive discharge of uranium-containing wastewater seriously threatens environmental safety and human health. Herein, macroporous and ultralight polyethyleneimine-grafted chitosan/nano-TiO2 composite foam (PCT) with antibacterial activity was synthesized, which could quickly remove U(VI) from solution. Among different PCT adsorbents, PCT-2 had the best adsorption performance for U(VI), which could be due to its honeycomb macroporous structures and the presence of abundant amino/imine groups. The kinetics and adsorption isotherms data were found in agreement with the pseudo-second-order model and the Langmuir model, respectively, indicating chemisorption or complexation as the main adsorption mechanism. The saturated adsorption capacity of PCT-2 for U(VI) reaches 259.91 mg/g at pH 5.0 and 298 K. The PCT-2 also presents good selectivity for U(VI) with the coefficient (βU/M) order of Na+ > K+ > Mg2+ > Ca2+ > Ni2+ > Co2+ > Mn2+ > Al3+ > Fe3+ > Cu2+. The adsorption mechanism was explored using FT-IR and XPS analysis, indicating that amino/imine groups and hydroxyl groups are responsible for U(VI) complexation. Thermodynamic calculations show that U(VI) adsorption is endothermic and spontaneous. The ease of preparation, excellent adsorption performance and environmental friendliness of PCT-2 make it a novel adsorbent with antibacterial activity for radioactive contamination control.
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Affiliation(s)
- Xianqian Ao
- Jiangxi Province Key Laboratory of Synthetic Chemistry, East China University of Technology, 330013 Nanchang, China
| | - Limin Zhou
- Jiangxi Province Key Laboratory of Synthetic Chemistry, East China University of Technology, 330013 Nanchang, China; State Key Laboratory for Nuclear Resources and Environment, East China University of Technology, 418 Guanglan Road, 330013 Nanchang, China.
| | - Jieyun Jin
- Jiangxi Province Key Laboratory of Synthetic Chemistry, East China University of Technology, 330013 Nanchang, China
| | - Yanlin Liu
- Jiangxi Province Key Laboratory of Synthetic Chemistry, East China University of Technology, 330013 Nanchang, China
| | - Jinbo Ouyang
- Jiangxi Province Key Laboratory of Synthetic Chemistry, East China University of Technology, 330013 Nanchang, China
| | - Zhirong Liu
- Jiangxi Province Key Laboratory of Synthetic Chemistry, East China University of Technology, 330013 Nanchang, China
| | - Hamza Shehzad
- State Key Laboratory for Nuclear Resources and Environment, East China University of Technology, 418 Guanglan Road, 330013 Nanchang, China; School of Chemistry, University of the Punjab, New Campus, Lahore 54590, Pakistan
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4
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Alnawmasi JS. Construction of amino-thiol functionalized ion-imprinted chitosan for lead (II) ion removal. Carbohydr Polym 2023; 308:120596. [PMID: 36813349 DOI: 10.1016/j.carbpol.2023.120596] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 01/13/2023] [Accepted: 01/15/2023] [Indexed: 01/27/2023]
Abstract
Ion-imprinting technique was used to create a lead ion-imprinted sorbent from an amino-thiol chitosan derivative (Pb-ATCS). First, 3-Nitro-4-sulfanylbenzoic acid (NSB) unit's amidized the chitosan, and then the -NO2-residues were selectively reduced to -NH2. Imprinting was accomplished by cross-linking with epichlorohydrin and removing the Pb (II) ions from the across-linked polymeric complex formed from the amino-thiol chitosan polymer ligand (ATCS) and Pb (II) ions. The synthetic steps have been investigated by nuclear magnetic resonance (NMR) and Fourier transform infrared spectroscopy (FTIR), and the sorbent was tested for its ability to selectively bind Pb (II) ions. The produced Pb-ATCS sorbent had a maximum capacity of roughly 300 mg/g, and it showed a greater affinity for the Pb (II) ions than the control NI-ATCS sorbent particle. The pseudo-2nd-order equation was also consistent with the adsorption kinetics of the sorbent, which were quite rapid. This demonstrated that metal ions were chemo-adsorbed onto the Pb-ATCS and NI-ATCS solid surfaces via coordination with the introduced amino-thiol moieties.
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Affiliation(s)
- Jawza Sh Alnawmasi
- Department of Chemistry, College of Science, Qassim University, Buraydah, 51452, Qassim, Saudi Arabia.
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5
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Hu QH, Tang DY, Xiang YL, Chen X, Lin J, Zhou QH. Magnetic ion-imprinted polyacrylonitrile-chitosan electro-spun nanofibrous membrane as recyclable adsorbent with selective heavy metal removal and antibacterial fouling in water treatment. Int J Biol Macromol 2023; 241:124620. [PMID: 37119910 DOI: 10.1016/j.ijbiomac.2023.124620] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 04/12/2023] [Accepted: 04/23/2023] [Indexed: 05/01/2023]
Abstract
Water pollution has become one of the most concerned environmental issues on the worldwide scale. Due to the harmfulness of the heavy metal ions and microorganisms in wastewater, novel filtration membranes for water treatment are expected to simultaneously clear these pollutants. Herein, the electro-spun polyacrylonitrile (PAN) based magnetic ion-imprinted membrane (MIIM) were fabricated to achieve both selective removal of Pb(II) ions and excellent antibacterial efficiency. The competitive removal experiments showed that the MIIM displayed efficiently selective removal of Pb(II) (45.4 mg·g-1). Pseudo-second-order mode and Langmuir isotherm equation is well matched with the equilibrium adsorption. The MIIM showed sustained removal performance (~79.0 %) against Pb(II) ions after 7 adsorption-desorption cycles with negligible Fe ions loss of 7.3 %. Moreover, the MIIM exhibited excellent antibacterial properties that >90 % of E. coli and S. aureus were killed by the MIIM. In conclusion, the MIIM provides a novel technological platform for integration of multi-function with selective metal ions removal, excellent cycling reusability, and enhanced antibacterial fouling property, which can be potentially utilized as a promising adsorbent in actual treatment of polluted water.
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Affiliation(s)
- Qiu-Hui Hu
- Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, First Ring Road, 4th Section No.16, Chengdu, Sichuan 610041, China
| | - De-Yu Tang
- Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, First Ring Road, 4th Section No.16, Chengdu, Sichuan 610041, China
| | - Ya-Li Xiang
- Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, First Ring Road, 4th Section No.16, Chengdu, Sichuan 610041, China
| | - Xiao Chen
- Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, First Ring Road, 4th Section No.16, Chengdu, Sichuan 610041, China
| | - Juan Lin
- School of Biomedical Sciences and Technology, Chengdu Medical College, Xindu Road No.783, Chengdu, Sichuan 610500, China.
| | - Qing-Han Zhou
- Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, First Ring Road, 4th Section No.16, Chengdu, Sichuan 610041, China; Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, China.
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Jiao GJ, Ma J, Hu J, Wang X, Sun R. Hierarchical build-up of vertically oriented lignin-based aerogel for photothermally assisted uranium uptake and recovery from acidic wastewater. JOURNAL OF HAZARDOUS MATERIALS 2023; 448:130988. [PMID: 36860059 DOI: 10.1016/j.jhazmat.2023.130988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 01/24/2023] [Accepted: 02/08/2023] [Indexed: 06/18/2023]
Abstract
Developing the lignin-based functional materials for uranium uptake is extremely attractive, but challenging due to the complex structure, poor solubility and reactivity of lignin. Herein, a novel phosphorylated lignin (LP)/sodium alginate/ carboxylated carbon nanotube (CCNT) composite aerogel (LP@AC) with vertically oriented lamellar configuration was created for efficient uranium uptake from acidic wastewater. The successful phosphorylation of lignin by a facile solvent-free mechanochemical method achieved more than six-times enhancement in U(VI) uptake capacity of lignin. While, the incorporation of CCNT not only increased the specific surface area of LP@AC, but also improved its mechanical strength as a reinforcing phase. More importantly, the synergies between LP and CCNT components endowed LP@AC with an excellent photothermal performance, resulting in a local heat environment on LP@AC and further boosting the U(VI) uptake. Consequently, the light irradiated LP@AC exhibited an ultrahigh U(VI) uptake capacity (1308.87 mg g-1), 61.26% higher than that under dark condition, excellent adsorptive selectivity and reusability. After exposure to 10 L of simulated wastewater, above 98.21% of U(VI) ions could be rapidly captured by LP@AC under light irradiation, revealing the tremendous feasibility in industrial application. The electrostatic attraction and coordination interaction were considered as the main mechanism for U(VI) uptake.
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Affiliation(s)
- Gao-Jie Jiao
- Liaoning Key Laboratory of Lignocellulosic Chemistry and Biomaterials, College of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Jiliang Ma
- Liaoning Key Laboratory of Lignocellulosic Chemistry and Biomaterials, College of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China.
| | - Jinguang Hu
- Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Drive, NW Calgary, Alberta, Canada
| | - Xing Wang
- Liaoning Key Laboratory of Lignocellulosic Chemistry and Biomaterials, College of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Runcang Sun
- Liaoning Key Laboratory of Lignocellulosic Chemistry and Biomaterials, College of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China.
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Elsayed NH, Monier M, Alatawi RA, Al-Anazi M. Design of ion-imprinted cellulose-based microspheres for selective recovery of uranyl ions. Carbohydr Polym 2023; 313:120873. [PMID: 37182933 DOI: 10.1016/j.carbpol.2023.120873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Revised: 03/26/2023] [Accepted: 03/27/2023] [Indexed: 04/09/2023]
Abstract
Herein, cellulose was selected as the raw material for the production of sorbent microspheres for the selective separation of uranyl (UO22+) ions by ion-imprinting technique due to their low cost, biodegradability, and renewability. To begin, an amidoxime cellulosic derivative (AOCE) is synthesized by a Michael addition followed by an amidoximation reaction, both of which are homogeneous reactions. In the end, microspheres of ion-imprinted U-AOCE sorbent were made by mixing the developed AOCE derivative with UO22+, crosslinking the UO22+ polymer complex with glyoxal, and eluting the coordinated ions with H+/EDTA. U-AOCE smartly recognized the target ions for fitting the cavities generated during the UO22+-imprinting process, resulting in a much greater adsorption capacity of 382 ± 1 mg/g and enhanced adsorption selectivity for UO22+. A pseudo-second-order model fit the data well in terms of kinetics, while the Langmuir model adequately explained the isotherms, indicating chemisorption and adsorption via UO22+ chelation. The coordination between UO22+ and both the -NH2 and -OH groups of the amidoxime units is the primary adsorption process, as shown by NMR, XPS, and FTIR studies. For UO22+ biosorption from aqueous effluents, the results of this study deliver new guidance for the design of biosorbents with high removal capability and excellent selectivity.
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Lazar MM, Ghiorghita CA, Dragan ES, Humelnicu D, Dinu MV. Ion-Imprinted Polymeric Materials for Selective Adsorption of Heavy Metal Ions from Aqueous Solution. Molecules 2023; 28:molecules28062798. [PMID: 36985770 PMCID: PMC10055817 DOI: 10.3390/molecules28062798] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 03/17/2023] [Accepted: 03/17/2023] [Indexed: 03/30/2023] Open
Abstract
The introduction of selective recognition sites toward certain heavy metal ions (HMIs) is a great challenge, which has a major role when the separation of species with similar physicochemical features is considered. In this context, ion-imprinted polymers (IIPs) developed based on the principle of molecular imprinting methodology, have emerged as an innovative solution. Recent advances in IIPs have shown that they exhibit higher selectivity coefficients than non-imprinted ones, which could support a large range of environmental applications starting from extraction and monitoring of HMIs to their detection and quantification. This review will emphasize the application of IIPs for selective removal of transition metal ions (including HMIs, precious metal ions, radionuclides, and rare earth metal ions) from aqueous solution by critically analyzing the most relevant literature studies from the last decade. In the first part of this review, the chemical components of IIPs, the main ion-imprinting technologies as well as the characterization methods used to evaluate the binding properties are briefly presented. In the second part, synthesis parameters, adsorption performance, and a descriptive analysis of solid phase extraction of heavy metal ions by various IIPs are provided.
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Affiliation(s)
- Maria Marinela Lazar
- Department of Functional Polymers, Petru Poni Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley 41 A, 700487 Iasi, Romania
| | - Claudiu-Augustin Ghiorghita
- Department of Functional Polymers, Petru Poni Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley 41 A, 700487 Iasi, Romania
| | - Ecaterina Stela Dragan
- Department of Functional Polymers, Petru Poni Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley 41 A, 700487 Iasi, Romania
| | - Doina Humelnicu
- Faculty of Chemistry, Alexandru Ioan Cuza University of Iasi, Carol I Bd. 11, 700506 Iasi, Romania
| | - Maria Valentina Dinu
- Department of Functional Polymers, Petru Poni Institute of Macromolecular Chemistry, Grigore Ghica Voda Alley 41 A, 700487 Iasi, Romania
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Elsayed NH, Monier M, Alatawi RAS, Al-Anazi M, Albalawi M, Alatawi MJ. Selective removal of uranyl ions using ion-imprinted amino-phenolic functionalized chitosan. Int J Biol Macromol 2023; 237:124073. [PMID: 36934819 DOI: 10.1016/j.ijbiomac.2023.124073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 03/06/2023] [Accepted: 03/14/2023] [Indexed: 03/21/2023]
Abstract
The recovery of uranium from aqueous effluents is very important for both the environment and the future of nuclear power. However, issues of sluggish rates and poor selectivity persist in achieving high-efficiency uranium extraction. In this study, uranyl (UO22+) ions were imprinted on an amino-phenolic chitosan derivative using an ion-imprinting method. First, 3-hydroxy-4-nitrobenzoic acid (HNB) units were joined to chitosan via amide bonding, followed by reducing the -NO2 residues into -NH2. The amino-phenolic chitosan polymer ligand (APCS) was coordinated with UO22+ ions, then cross-linked with epichlorohydrin (ECH), and finally the UO22+ ions were taken away. When compared to non-imprinted sorbent, the resulting UO22+ imprinted sorbent material (U-APCS) recognized the target ions preferentially, allowing for much higher adsorption capacities (qm = 309 ± 1 mg/g) and improved adsorption selectivity for UO22+. The FTIR and XPS analyses supported the pseudo-second-order model's suggestion that chemisorption or coordination is the primary adsorption mechanism by fitting the data well in terms of kinetics. Also, the Langmuir model adequately explained the isotherms, suggesting UO22+ adsorption in the form of monolayers. The pHZPC value was estimated at around 5.7; thus, the optimum uptake pH was achieved between pHs 5 and 6. The thermodynamic properties support the endothermic and spontaneous nature of UO22+ adsorption.
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Affiliation(s)
- Nadia H Elsayed
- Department of Chemistry, Faculty of Science, University of Tabuk, Tabuk 71421, Saudi Arabia; Department of Polymers and Pigments, National Research Centre, Cairo 12311, Egypt.
| | - M Monier
- Chemistry Department, Faculty of Science, Mansoura University, Mansoura, Egypt.
| | - Raedah A S Alatawi
- Department of Chemistry, Faculty of Science, University of Tabuk, Tabuk 71421, Saudi Arabia
| | - Menier Al-Anazi
- Department of Chemistry, Faculty of Science, University of Tabuk, Tabuk 71421, Saudi Arabia
| | - Mody Albalawi
- Department of Biochemistry, Faculty of Science, University of Tabuk, Tabuk, Saudi Arabia
| | - Maher J Alatawi
- Department of Electrical Engineering, Faculty of Engineering, University of Tabuk, Tabuk, Saudi Arabia
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Jiao GJ, Ma J, Zhang J, Zhai S, Sun R. Efficient extraction of uranium from seawater by reticular polyamidoxime-functionalized oriented holocellulose bundles. Carbohydr Polym 2023; 300:120244. [DOI: 10.1016/j.carbpol.2022.120244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 09/26/2022] [Accepted: 10/16/2022] [Indexed: 11/06/2022]
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Niu F, Xu W, Wu G, Lu S, Ou X, Chen Z, Zhao X, Sun Y, Song Y, Zhang P. Synthesis process and adsorption performance of temperature-sensitive ion-imprinted porous microspheres (ReO 4−-TIIM) for the selective separation of ReO 4−. NEW J CHEM 2023. [DOI: 10.1039/d2nj05400k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
The adsorption–desorption process of imprinted microspheres is controlled by changing the temperature conditions of the external environment.
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Affiliation(s)
- Fangfang Niu
- State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials, Lanzhou University of Technology, Lanzhou, Gansu, P. R. China
- School of Material Science and Engineering, Lanzhou University of Technology, Lanzhou, Gansu, P. R. China
| | - Wan Xu
- State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials, Lanzhou University of Technology, Lanzhou, Gansu, P. R. China
- School of Material Science and Engineering, Lanzhou University of Technology, Lanzhou, Gansu, P. R. China
| | - Gang Wu
- State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials, Lanzhou University of Technology, Lanzhou, Gansu, P. R. China
- School of Material Science and Engineering, Lanzhou University of Technology, Lanzhou, Gansu, P. R. China
| | - Siyuan Lu
- State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials, Lanzhou University of Technology, Lanzhou, Gansu, P. R. China
- School of Material Science and Engineering, Lanzhou University of Technology, Lanzhou, Gansu, P. R. China
| | - Xiaojian Ou
- State Key Laboratory of Nickel and Cobalt Resources Comprehensive Utilization, Jinchang 737100, Gansu, P. R. China
| | - Zhenbin Chen
- State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials, Lanzhou University of Technology, Lanzhou, Gansu, P. R. China
- School of Material Science and Engineering, Lanzhou University of Technology, Lanzhou, Gansu, P. R. China
| | - Xinyu Zhao
- State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials, Lanzhou University of Technology, Lanzhou, Gansu, P. R. China
- School of Material Science and Engineering, Lanzhou University of Technology, Lanzhou, Gansu, P. R. China
| | - Yuan Sun
- Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, Liaoning, P. R. China
| | - Yuanjun Song
- State Key Laboratory of Nickel and Cobalt Resources Comprehensive Utilization, Jinchang 737100, Gansu, P. R. China
| | - Peng Zhang
- State Key Laboratory of Nickel and Cobalt Resources Comprehensive Utilization, Jinchang 737100, Gansu, P. R. China
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Ou M, Li W, Zhang Z, Xu X. β-Cyclodextrin and diatomite immobilized in sodium alginate biosorbent for selective uranium(VI) adsorption in aqueous solution. Int J Biol Macromol 2022; 222:2006-2016. [DOI: 10.1016/j.ijbiomac.2022.09.290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 09/29/2022] [Accepted: 09/30/2022] [Indexed: 11/05/2022]
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13
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Chen Q, Xue X, Liu Y, Guo A, Chen K, Yin J, Yu F, Zhu H, Guo X. Shear-induced fabrication of SiO 2 nano-meshes for efficient uranium capture. JOURNAL OF HAZARDOUS MATERIALS 2022; 438:129524. [PMID: 35999738 DOI: 10.1016/j.jhazmat.2022.129524] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Revised: 06/17/2022] [Accepted: 07/01/2022] [Indexed: 06/15/2023]
Abstract
The extraction of uranium from seawater and the safe treatment of wastewater containing uranium (VI) were important to ensure the sustainable development of nuclear-related energy sources. Two-dimensional silica nanomaterials have been extensively investigated in the field of uranium adsorption due to their high adsorption capacity, short equilibration times, and easily modified surface groups. However, the two-dimensional mesoporous silica nanomaterial preparation has become a challenge due to the lack of natural sheet templating agents. The reason will hinder the development of silica nanomaterials for uranium extraction. Here, the specific surface area silica nanomeshes (HSMSMs) uranium adsorbent was prepared by a high shear method to induce nanobubble formation. HSMSMs showed a high uranium adsorption capacity of 822 mg-U/g-abs in seawater with the uranium adsorption concentration was 50 mg/L, which was approximately 2 times higher than the conventional mesoporous silica nanomaterials. Compared to HSMSMs, the amidoxime-modified high specific surface area silica nanomesh (HSMSMs-AO) demonstrated good selectivity for U(VI), and the uranium ions uptake was 877 mg-U/g-abs in 50 mg/L uranium-spiked simulated seawater. Due to HSMSMs-AO's stable chemical properties and high mechanical strength, HSMSMs-AO also displayed long service life. Benefiting from the simple preparation method and high adsorption capacity of HSMSMs, HSMSMs could be a promising candidate for large-scale extraction of uranium from seawater.
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Affiliation(s)
- Qiang Chen
- School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, PR China
| | - Xueyan Xue
- Bingtuan Industrial Technology Research Institute, Shihezi University, Shihezi 832003, PR China
| | - Ying Liu
- China National Nuclear Industry Corporation 404, Jiayuguan 735100, PR China
| | - Aixia Guo
- School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, PR China
| | - Kai Chen
- School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, PR China
| | - Jiao Yin
- Laboratory of Environmental Sciences and Technology, Xinjiang Technical Institute of Physics & Chemistry, Urumqi 830011, PR China
| | - Feng Yu
- School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, PR China; Bingtuan Industrial Technology Research Institute, Shihezi University, Shihezi 832003, PR China.
| | - Hui Zhu
- Laboratory of Environmental Sciences and Technology, Xinjiang Technical Institute of Physics & Chemistry, Urumqi 830011, PR China.
| | - Xuhong Guo
- School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, PR China; State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, PR China.
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14
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Yan H, Liu Y, Zhang F, Ma K, Tang L, Liu X, Gu M, Han J, Wu F, Bu W, Yang C, Li L, Hu S. Combined separation-assay method for uranium in environmental water using a polyethylene-supported phosphonate coordination polymer membrane. J Radioanal Nucl Chem 2022. [DOI: 10.1007/s10967-022-08503-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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15
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Georgiev V, Dakova I, Karadjova I. Uranium Determination in Waters, Wine and Honey by Solid Phase Extraction with New Ion Imprinted Polymer. Molecules 2022; 27:molecules27175516. [PMID: 36080286 PMCID: PMC9457621 DOI: 10.3390/molecules27175516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 08/23/2022] [Accepted: 08/24/2022] [Indexed: 11/17/2022] Open
Abstract
An analytical method for uranium determination in waters, wine and honey was developed based on solid phase extraction (SPE) with new ion imprinted polymer. The sorbent was synthesized using 4-(2-Pyridylazo)resorcinol (PAR) as a ligand via dispersion polymerization and characterized by SEM for morphology and shape of polymer particles and nitrogen adsorption–desorption studies for their surface area and total pore volume. The kinetic experiments performed showed that the rate limiting step is the complexation between U(VI) ions and chelating ligand PAR incorporated in the polymer matrix. Investigations by Freundlich and Langmuir adsorption isotherm models showed that sorption process occurs as a surface monolayer on homogeneous sites. The high extraction efficiency of synthesized sorbent toward U(VI) allows its application for SPE determination of U(VI) in wine and honey without preliminary sample digestion using ICP-OES as measurement method. The recoveries achieved varied: (i) between 88 to 95% for surface and ground waters, (ii) between 90–96% for 5% aqueous solution of honey, (iii) between 86–93% for different types of wine. The validity and versatility of proposed analytical methods were confirmed by parallel measurement of U in water samples using Alpha spectrometry and U analysis in wine and honey after sample digestion and ICP-MS measurement. The analytical procedure proposed for U determination in surface waters is characterized with low limits of detection/quantification and good reproducibility ensuring its application for routine control in national monitoring of surface waters. The application of proposed method for honey and wine samples analysis provides data for U content in traditional Bulgarian products.
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16
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Gao Y, Zhou RY, Yao L, Wang Y, Yue Q, Yu L, Yu JX, Yin W. Selective capture of Pd(II) from aqueous media by ion-imprinted dendritic mesoporous silica nanoparticles and re-utilization of the spent adsorbent for Suzuki reaction in water. JOURNAL OF HAZARDOUS MATERIALS 2022; 436:129249. [PMID: 35739768 DOI: 10.1016/j.jhazmat.2022.129249] [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: 01/05/2022] [Revised: 05/07/2022] [Accepted: 05/25/2022] [Indexed: 06/15/2023]
Abstract
The development of highly efficient adsorptive material for the selective capture of Pd(II), and re-utilization of spent Pd(II)-loaded adsorbent as an efficient catalyst for organic synthesis are of great significance, but challenging. Particularly, the heterogeneous palladium-catalyzed Suzuki reaction in aqueous media is much more challenging than that of homogeneous. Herein, several novel Pd(II) ion-imprinted polymers (PIIPs) based on dendritic fibrous silica particles are constructed by surface ion imprinting technology (SIIT), using Schiff base and pyridine groups functionalized organosilicon as functional monomer. The PIIP-3 prepared by 3 g of functional monomer exhibits the best adsorption performance, and shows ultrafast (10 min) and selective capture of Pd(II) with high uptake capacity (382.5 mg/g). Moreover, the waste Pd(II) loaded PIIP-3 (PIIP-3-Pd) can serve as a catalyst towards the Suzuki reaction in water, affording 94.2 % yield of the desired product. Interestingly, the PIIP-3-Pd can be reused 12 times without an appreciable decrease in catalytic activity, which is probably due to the imprinted cavity and specific recognition site of PIIP-3 can match and recapture Pd active species in a complex catalytic environment. Thus, this work demonstrates huge potentials of SIIT to enhance the selectivity of adsorption process and increase the lifetime of catalysts.
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Affiliation(s)
- Yue Gao
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao 266000, China
| | - Ru-Yi Zhou
- Hubei Key Laboratory of Biomass Fibers and Eco-dyeing & Finishing, School of Chemistry and Chemical Engineering, Wuhan Textile University, Wuhan 430073, China; Hubei key Laboratory of Novel Reactor & Green Chemical Technology, National Engineering Research Center of Phosphorus Resource Exploitation, School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430074, China
| | - Lifeng Yao
- School of Chemistry and Chemical Engineering, Jiangxi Science and Technology Normal University, Nanchang 330013, China
| | - Yi Wang
- Hubei Key Laboratory of Biomass Fibers and Eco-dyeing & Finishing, School of Chemistry and Chemical Engineering, Wuhan Textile University, Wuhan 430073, China; Hubei key Laboratory of Novel Reactor & Green Chemical Technology, National Engineering Research Center of Phosphorus Resource Exploitation, School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430074, China
| | - Qinyan Yue
- Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao 266000, China
| | - Lan Yu
- Hubei Key Laboratory of Biomass Fibers and Eco-dyeing & Finishing, School of Chemistry and Chemical Engineering, Wuhan Textile University, Wuhan 430073, China
| | - Jun-Xia Yu
- Hubei key Laboratory of Novel Reactor & Green Chemical Technology, National Engineering Research Center of Phosphorus Resource Exploitation, School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430074, China.
| | - Weiyan Yin
- Hubei Key Laboratory of Biomass Fibers and Eco-dyeing & Finishing, School of Chemistry and Chemical Engineering, Wuhan Textile University, Wuhan 430073, China.
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17
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Mabrouk M, Hammad SF, Mansour FR, Abdella AA. A Critical Review of Analytical Applications of Chitosan as a Sustainable Chemical with Functions Galore. Crit Rev Anal Chem 2022; 54:840-856. [PMID: 35903052 DOI: 10.1080/10408347.2022.2099220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
Biomass and biowastes stand as sustainable and cost-effective environmentally benign alternative feedstock. Chitosan is a biocompatible, bioactive, and biodegradable biopolymer derived from chitin to achieve eight aspects out of the 12 green chemistry principles. Chitosan got significant attention in several fields including chemical analysis, in addition to chemical functionally, which enabled its use as adsorbent and its structural crosslinking using various crosslinkers. The physicochemical, technological, and optical properties of chitosan have been extensively exploited in analysis. Mainly, deacetylation degree and molecular weight are controlling its properties and hence controlling its functions. This review presents a structure, properties, and functions relationships of chitosan. It also aims to provide an overview of the different functions that chitosan can serve in each analytical technique such as supporting matrix, catalyst…etc. The contribution of chitosan in improving the ecological performance is discussed in each technique.
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Affiliation(s)
- Mokhtar Mabrouk
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Tanta University, Tanta, Egypt
- Pharmaceutical Services Center, Faculty of Pharmacy, Tanta University, Tanta, Egypt
| | - Sherin F Hammad
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Tanta University, Tanta, Egypt
| | - Fotouh R Mansour
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Tanta University, Tanta, Egypt
- Pharmaceutical Services Center, Faculty of Pharmacy, Tanta University, Tanta, Egypt
| | - Aya A Abdella
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Tanta University, Tanta, Egypt
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18
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Xia M, Gao R, Xu G, You Y, Li X, Dou J, Fan F. Fabrication and investigation of novel monochloroacetic acid fortified, tripolyphosphate-crosslinked chitosan for highly efficient adsorption of uranyl ions from radioactive effluents. JOURNAL OF HAZARDOUS MATERIALS 2022; 431:128461. [PMID: 35228076 DOI: 10.1016/j.jhazmat.2022.128461] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 01/24/2022] [Accepted: 02/07/2022] [Indexed: 06/14/2023]
Abstract
Chitosan crosslinked with potassium tripolyphosphate (CTPP) and monochloroacetic-acid-modified chitosan crosslinked with potassium tripolyphosphate (MCTPP) were synthesized for removing UO22+ from acidic radioactive effluents. The influential factors, operational requirements, and interactive mechanisms of the adsorption process were systematically investigated. The mesh-structured composites adsorbed UO22+ most effectively at pH 5.0. The maximum adsorption capacities for pure chitosan, CTPP, and MCTPP were 374.93, 780.89, and 1487.72 mg/g, respectively. Batch experiments indicated that the pH and adsorbent dose strongly influenced UO22+ adsorption. MCTPP could adsorb most UO22+ within 15 min, and equilibrium was reached by ~1 h. The adsorption isotherms indicated that UO22+ adsorption by MCTPP may be an endothermic single-layer adsorption process. Moreover, common metal ions in single-metal systems only slightly affected this process. The results of instrumental characterization and natural water application suggested that the highly developed pore structure and abundant tripolyphosphate groups in synthesized composites were dominant adsorption contributors besides amino and hydroxyl groups. Successful development of the novel material for efficiently adsorbing UO22+ and identification of the adsorption mechanism will provide valuable guidance to chitosan modification and further remediation practices of radioactive effluents.
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Affiliation(s)
- Meng Xia
- College of Water Sciences, Beijing Normal University, Beijing 100875, PR China; Beijing Key Laboratory of Urban Hydrological Cycle and Sponge City Technology, College of Water Sciences, Beijing Normal University, Beijing 100875, PR China
| | - Ran Gao
- Department of Chemical and Environmental Engineering, University of Arizona, Tucson, AZ 85721, USA
| | - Guangming Xu
- College of Water Sciences, Beijing Normal University, Beijing 100875, PR China; Beijing Key Laboratory of Urban Hydrological Cycle and Sponge City Technology, College of Water Sciences, Beijing Normal University, Beijing 100875, PR China
| | - Yue You
- College of Water Sciences, Beijing Normal University, Beijing 100875, PR China; Beijing Key Laboratory of Urban Hydrological Cycle and Sponge City Technology, College of Water Sciences, Beijing Normal University, Beijing 100875, PR China
| | - Xindai Li
- College of Water Sciences, Beijing Normal University, Beijing 100875, PR China; Beijing Key Laboratory of Urban Hydrological Cycle and Sponge City Technology, College of Water Sciences, Beijing Normal University, Beijing 100875, PR China
| | - Junfeng Dou
- College of Water Sciences, Beijing Normal University, Beijing 100875, PR China; Beijing Key Laboratory of Urban Hydrological Cycle and Sponge City Technology, College of Water Sciences, Beijing Normal University, Beijing 100875, PR China.
| | - Fuqiang Fan
- Advanced Institute of Natural Sciences, Beijing Normal University at Zhuhai, Zhuhai 519087, PR China.
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19
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Das D, R A, Kay P, Ramamurthy V, Goycoolea FM, Das N. Selective recovery of lithium from spent coin cell cathode leachates using ion imprinted blended chitosan microfibers: Pilot scale studies provide insights on scalability. JOURNAL OF HAZARDOUS MATERIALS 2022; 431:128535. [PMID: 35259696 DOI: 10.1016/j.jhazmat.2022.128535] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2021] [Revised: 02/02/2022] [Accepted: 02/19/2022] [Indexed: 06/14/2023]
Affiliation(s)
- Devlina Das
- School of Food Science and Nutrition, University of Leeds, LS2 9JT, United Kingdom; Department of Biotechnology, PSG College of Technology, Coimbatore 641004, India.
| | - Abarajitha R
- Department of Biotechnology, PSG College of Technology, Coimbatore 641004, India
| | - Paul Kay
- School of Geography, University of Leeds, LS2 9JT, United Kingdom
| | - V Ramamurthy
- Department of Biotechnology, PSG College of Technology, Coimbatore 641004, India; Department of Biomedical Engineering, Sri Ramakrishna Engineering College, Coimbatore 641 022, India
| | | | - Nilanjana Das
- Bioremediation Laboratory, School of Biosciences and Technology, Vellore Institute of Technology, Vellore 632014, India
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20
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Synthesis and characterization of chitosan-vermiculite-lignin ternary composite as an adsorbent for effective removal of uranyl ions from aqueous solution: Experimental and theoretical analyses. Int J Biol Macromol 2022; 209:1234-1247. [PMID: 35461866 DOI: 10.1016/j.ijbiomac.2022.04.128] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Revised: 04/08/2022] [Accepted: 04/17/2022] [Indexed: 12/25/2022]
Abstract
Chitosan (Ch), vermiculite (V) and lignin (L) were used as the components of a natural composite adsorbent (Ch-VL) for the removal of the UO22+ ions in aqueous solutions. During the study, we recorded and analyzed the initial UO22+ ion concentration, initial pH, contact time, temperature, and recovery. The recycling performance of the Ch-VL composite was assessed by three sequential adsorption/desorption experiments. Adsorption performance of the Ch-VL composite for UO22+ ions was 600 mg L-1 at pH 4.5 and temperature of 25 °C. Thermodynamic findings, ΔH0:28.1 kJ mol-1, and ΔG0:-14.1 kJ mol-1 showed that adsorption behavior was endothermic and spontaneous. Its maximum adsorption capacity was 0.322 mol kg-1, obtained from the Langmuir isotherm model. The adsorption kinetics indicated that it followed the pseudo-second-order and intraparticle diffusion rate kinetics. The adsorption thermodynamic shown indicated that the UO22+ ion adsorption was both spontaneous and endothermic. The adsorption process was enlightened by FT-IR and SEM-EDX analyses. The study suggested a simple and cost-effective approach for the removal of toxic UO22+ ions from wastewater. To highlight the adsorption mechanism, DFT calculations were performed. Theoretical results are in good agreement with experimental observations.
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21
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Hojatpanah MR, Khanmohammadi A, Khoshsafar H, Hajian A, Bagheri H. Construction and application of a novel electrochemical sensor for trace determination of uranium based on ion-imprinted polymers modified glassy carbon electrode. CHEMOSPHERE 2022; 292:133435. [PMID: 34958794 DOI: 10.1016/j.chemosphere.2021.133435] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 12/17/2021] [Accepted: 12/23/2021] [Indexed: 06/14/2023]
Abstract
In the present work, a novel electrochemical sensor modified glassy carbon electrode with ion-imprinted polymers (IIP-GCE) was applied for uranyl ions (UO22+) determination. Surface modifier was synthesized through precipitation polymerization method, using acrylic acid as a monomer, benzoyl peroxide (BPO) as initiator, and trimethylolpropane triacrylate (TMPTA) as cross-linker. A new uranyl-trans-3-(3-pyridyl) acrylic acid complex was employed, serving as an active and specific site on the synthesized modifier. Next, the synthesized modifier was characterized using X-ray diffraction (XRD), Scanning Electron microscopy (SEM), and Fourier Transform Infrared Spectroscopy (FT-IR) techniques. UO22+ ions were detected using a differential pulse adsorptive anodic stripping voltammetry method. Under the optimized conditions (pH = 8.0, pre-concentration time = 10 min and pre-concentration potential = -0.30 V), the modified electrode exhibited linear behavior in the interval of 1.27-95.49 μg.L-1 with a limit of detection (LOD) of 0.43 μg.L-1. Also, the constructed ion-imprinted sensor showed a successful application for determining UO22+ ions with recovery range of 97.6-101% in real samples.
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Affiliation(s)
- Mohammad Reza Hojatpanah
- Chemical Injuries Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Akbar Khanmohammadi
- Research and Development Department, Farin Behbood Tashkhis LTD, Tehran, Iran
| | - Hosin Khoshsafar
- Chemical Injuries Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Ali Hajian
- Institute of Sensor and Actuator Systems, TU Wien, Vienna, Austria
| | - Hasan Bagheri
- Chemical Injuries Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran.
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22
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Mabrouk M, Hammad SF, Abdella AA, Mansour FR. Enantioselective chitosan-based racemic ketoprofen imprinted polymer: Chiral recognition and resolution study. Int J Biol Macromol 2022; 200:327-334. [PMID: 34998877 DOI: 10.1016/j.ijbiomac.2021.12.167] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 12/21/2021] [Accepted: 12/27/2021] [Indexed: 11/24/2022]
Abstract
This work presented a novel racemic imprinting process employing the chiral properties of chitosan monomer. The preparation of racemic ketoprofen (RS-KTP) imprinted polymer (RS-MIP) was conducted using glutaraldehyde as a crosslinker. The nature of elution solvent affected the % desorption ratio suggesting a heterogenous nature of the formed binding sites. Good imprinting was indicated by an imprinting factor of 3.50 for S-KTP. The enantioselectivity of the RS-MIP was indicated by enantioselectivity coefficient of 2.31 and % enantiomeric excess (%ee) of 28.55%. A SPE cartridge packed with RS-MIP enabled resolution of RS-KTP using gradient elution solvent system. Scatchard plot revealed two binding sites types of different affinity towards S-KTP and density observed for the RS-MIP. The binding capacity of RS-MIP showed observed dependence on the % ee of S-KTP indicating its enantioselectivity. The success of using racemic template for the preparation of enantioselective MIP brings a new possibility to achieve enantioseparation of racemic mixtures having very expensive or unavailable pure enantiomers.
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Affiliation(s)
- Mokhtar Mabrouk
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Tanta University, 31111, Egypt.
| | - Sherin F Hammad
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Tanta University, 31111, Egypt.
| | - Aya A Abdella
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Tanta University, 31111, Egypt.
| | - Fotouh R Mansour
- Department of Pharmaceutical Analytical Chemistry, Faculty of Pharmacy, Tanta University, 31111, Egypt; Pharmaceutical Services Center, Faculty of Pharmacy, Tanta University, 31111, Egypt.
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23
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Designing of modified ion-imprinted chitosan particles for selective removal of mercury (II) ions. Carbohydr Polym 2022; 286:119207. [DOI: 10.1016/j.carbpol.2022.119207] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 01/27/2022] [Accepted: 01/28/2022] [Indexed: 12/23/2022]
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24
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Liu E, Shi J, Lin X, Xu W, Feng L, Hong Y. Rational fabrication of a new ionic imprinted carboxymethyl chitosan-based sponge for efficient selective adsorption of Gd(iii). RSC Adv 2022; 12:3097-3107. [PMID: 35425305 PMCID: PMC8979235 DOI: 10.1039/d1ra08115b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Accepted: 01/03/2022] [Indexed: 01/23/2023] Open
Abstract
In this work, a new PEI-CMC-IIS adsorbent with 3D network structure was fabricated for the selective adsorption of Gd(iii).
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Affiliation(s)
- Enli Liu
- School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, People's Republic of China
- School of Materials Science and Engineering, Beihua University, Jilin 132013, People's Republic of China
| | - Junyou Shi
- School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, People's Republic of China
- School of Materials Science and Engineering, Beihua University, Jilin 132013, People's Republic of China
| | - Xue Lin
- School of Materials Science and Engineering, Beihua University, Jilin 132013, People's Republic of China
| | - Wenbiao Xu
- School of Materials Science and Engineering, Beihua University, Jilin 132013, People's Republic of China
| | - Liyun Feng
- School of Materials Science and Engineering, Beihua University, Jilin 132013, People's Republic of China
| | - Yuanzhi Hong
- School of Materials Science and Engineering, Beihua University, Jilin 132013, People's Republic of China
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25
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Wang Y, Ai Y, Liu X, Chen B, Zhang Y. Indole-functionalized cross-linked chitosan for effective uptake of uranium(VI) from aqueous solution. Polym Chem 2022. [DOI: 10.1039/d1py01725j] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, a novel indole-modified cross-linked chitosan aerogel (IAA-CTSA) was fabricated by grafting 3-indoleacetic acid onto chitosan and adding glutaraldehyde as crosslinking agent through a facile two-step one pot method. The...
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26
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Carbon cloth as an important electrode support for the high selective electrosorption of uranium from acidic uranium mine wastewater. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2021.119843] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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27
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Mazrad ZAI, Schelle B, Nicolazzo JA, Leiske MN, Kempe K. Nitrile-Functionalized Poly(2-oxazoline)s as a Versatile Platform for the Development of Polymer Therapeutics. Biomacromolecules 2021; 22:4618-4632. [PMID: 34647734 DOI: 10.1021/acs.biomac.1c00923] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In recent years, polymers bearing reactive groups have received significant interest for biomedical applications. Numerous functional polymer platforms have been introduced, which allow for the preparation of materials with tailored properties via post-polymerization modifications. However, because of their reactivity, many functional groups are not compatible with the initial polymerization. The nitrile group is a highly interesting and relatively inert functionality that has mainly received attention in radical polymerizations. In this Article, a nitrile-functionalized 2-oxazoline monomer (2-(4-nitrile-butyl)-2-oxazoline, BuNiOx) is introduced, and its compatibility with the cationic ring-opening polymerization is demonstrated. Subsequently, the versatility of nitrile-functionalized poly(2-oxazoline)s (POx) is presented. To this end, diverse (co)polymers are synthesized and characterized by nuclear resonance spectroscopy, size-exclusion chromatography, and mass spectrometry. Amphiphilic block copolymers are shown to efficiently encapsulate the hydrophobic drug curcumin (CUR) in aqueous solution, and the anti-inflammatory effect of the CUR-containing nanostructures is presented in BV-2 microglia. Furthermore, the availability of the BuNiOx repeating units for post-polymerization modifications with hydroxylamine to yield amidoxime (AO)-functionalized POx is demonstrated. These AO-containing POx were successfully applied for the complexation of Fe(III) in a quantitative manner. In addition, AO-functionalized POx were shown to release nitric oxide intracellularly in BV-2 microglia. Thus nitrile-functionalized POx represent a promising and robust platform for the design of polymer therapeutics for a wide range of applications.
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Affiliation(s)
- Zihnil A I Mazrad
- ARC Centre of Excellence in Convergent Bio-Nano Science & Technology, Monash University, Parkville, Victoria 3052, Australia.,Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
| | - Baptiste Schelle
- ARC Centre of Excellence in Convergent Bio-Nano Science & Technology, Monash University, Parkville, Victoria 3052, Australia.,Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
| | - Joseph A Nicolazzo
- Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
| | - Meike N Leiske
- ARC Centre of Excellence in Convergent Bio-Nano Science & Technology, Monash University, Parkville, Victoria 3052, Australia.,Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
| | - Kristian Kempe
- ARC Centre of Excellence in Convergent Bio-Nano Science & Technology, Monash University, Parkville, Victoria 3052, Australia.,Drug Delivery, Disposition and Dynamics, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia.,Materials Science and Engineering, Monash University, Clayton, Victoria 3800, Australia
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Wang Y, Lin Z, Liu Q, Zhu J, Liu J, Yu J, Chen R, Liu P, Wang J. Ultra-high mechanical property and multi-layer porous structure of amidoximation ethylene-acrylic acid copolymer balls for efficient and selective uranium adsorption from radioactive wastewater. CHEMOSPHERE 2021; 280:130722. [PMID: 33971414 DOI: 10.1016/j.chemosphere.2021.130722] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 04/08/2021] [Accepted: 04/23/2021] [Indexed: 06/12/2023]
Abstract
Adsorption uranium [U(VI)] from U-containing radioactive wastewater (URW) is a critical strategy for solving the resource shortage and environmental pollution in pace with the sustainable development of nuclear energy. However, the URW universally exhibits acidity and contains co-existing metal ions with high concentration. Herein, the amidoximation ethylene-acrylic acid copolymer balls (EAA-AO) with aciduric and super-high mechanical property were successfully synthesized through grafting diaminomaleonitrile and further treatment of amidoximation. Significantly, the mechanical properties of EAA-AO were not affected by the grafting process and maintained super-high mechanical properties. Furthermore, the -NH2 and unreacted -CN groups in diaminomaleonitrile adjusted the pKa to make the optimal pH be 4. In addition, the microstructure of EAA-AO was transformed from the original dense to multi-layer porous structure, which promoted the mass transfer process and the contact between uranyl ions (UO22+) and internal adsorption active sites. The adsorption capacity of EAA-AO was about 1.78 times that of EAA at pH = 4, and the adsorption capacity for U(VI) was about 8.17 times that of Ba2+ with the second highest adsorption capacity. Therefore, the EAA-AO exhibited ultra-high adsorption performance (qe = 3.196 mg g-1) in the artificial radioactive wastewater, laying a good foundation for subsequent large-scale industrial adsorption of U(VI) in nuclear industrial wastewater.
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Affiliation(s)
- Ying Wang
- Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, 150001, China.
| | - Zaiwen Lin
- Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, 150001, China.
| | - Qi Liu
- Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, 150001, China; HIT (Hainan) Military-Civilian Integration Innovation Research Institute Co. Ltd, Hainan, 572400, China.
| | - Jiahui Zhu
- Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, 150001, China.
| | - Jingyuan Liu
- Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, 150001, China.
| | - Jing Yu
- Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, 150001, China.
| | - Rongrong Chen
- Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, 150001, China; Institute of Advanced Marine Materials, Harbin Engineering University, 150001, China.
| | - Peili Liu
- Institute of Advanced Marine Materials, Harbin Engineering University, 150001, China.
| | - Jun Wang
- Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, 150001, China; Institute of Advanced Marine Materials, Harbin Engineering University, 150001, China.
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Nezhad MM, Semnani A, Tavakkoli N, Shirani M. Efficient removal and recovery of uranium from industrial radioactive wastewaters using functionalized activated carbon powder derived from zirconium carbide process waste. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:57073-57089. [PMID: 34081279 DOI: 10.1007/s11356-021-14638-3] [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: 02/22/2021] [Accepted: 05/26/2021] [Indexed: 06/12/2023]
Abstract
Development of efficient sorbents for selective removing and recovery of uranium from radioactive wastewaters is highly important in nuclear fuel industries from the standpoint of resource sustainability and environmental safety issues. In this study, carbon powder waste was modified by various chemical activating agents under atmosphere of nitrogen gas at 725 °C to prepare an efficient sorbent for removal and recovery of uranium ions from radioactive wastewaters of nuclear fuel conversion facility. Activation of the carbon powder with KOH, among different activators, provided maximum porosity and surface area. The activated samples were modified by reacting with ammonium persulfate in sulfuric acid solution to generate surface functional groups. The synthetized sorbents were characterized with FT-IR, XRD, BET, and SEM-EDS techniques. The effects of solution pH, contact time, initial uranium concentration, and temperature on the sorption capacity of the sorbent with respect to U(VI) from wastewater were investigated by batch method, followed by optimizing the effect of influential parameters by experimental design using central composite design. The sorption of UO22+ ions on the sorbents follows the Langmuir isotherm and pseudo-second-order kinetic models. Maximum sorption capacity for U(VI) was 192.31 mg g-1 of the modified sorbent at 35 °C. Thermodynamic data showed that sorption of U(VI) on the sorbent was through endothermic and spontaneous processes. The sorption studies on radioactive effluents of the nuclear industry demonstrated that the modified sorbent had a favorable selectivity for uranium removal in the presence of several other metal ions.
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Affiliation(s)
- Majid Mohammad Nezhad
- Department of Chemistry, Faculty of Science, Shahrekord University, P.O. Box 115, Shahrekord, Iran
| | - Abolfazl Semnani
- Department of Chemistry, Faculty of Science, Shahrekord University, P.O. Box 115, Shahrekord, Iran.
| | - Nahid Tavakkoli
- Chemistry Department, Payame Noor University, Tehran, 19395-4697, Islamic Republic of Iran
| | - Mahboube Shirani
- Department of Chemistry, Faculty of Science, University of Jiroft, P. O. Box, Jiroft, 7867161167, Iran.
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Preparation of NH2-CTS/MZ composites and their adsorption behavior and mechanism on uranium ions. J Radioanal Nucl Chem 2021. [DOI: 10.1007/s10967-021-07991-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Zhang X, Ou X, Zhang J, Chen Z, Liu C, Li H, Li X, Sun Y, Chen Z, Zhu J, Lu S, Zhang P. Smart ion imprinted polymer for selective adsorption of Ru(Ⅲ) and simultaneously waste sample being transformed as a catalyst. JOURNAL OF HAZARDOUS MATERIALS 2021; 417:126072. [PMID: 34229408 DOI: 10.1016/j.jhazmat.2021.126072] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 03/31/2021] [Accepted: 05/05/2021] [Indexed: 06/13/2023]
Abstract
In this work, a temperature-sensitive block polymer PDEA-b-P(DEA-co-AM) was synthesized and then introduced into the preparation of a smart Ru(Ⅲ) imprinted polymer (Ru-IIP) to selectively adsorption Ru(Ⅲ) first. Then the waste Ru-IIP was converted into a catalyst in-situ for recycle. The structure and morphology of the prepared polymer were characterized by Fourier transform infrared spectrometer, Scanning electron microscope, BET surface area and Thermogravimetric analysis. The adsorption properties of the synthesized smart material were investigated in terms of adsorption pH, adsorption kinetics and adsorption isotherm. Results documented that the optimal adsorption temperature and pH were 35 °C and 1.5 respectively, the maximum adsorption capacity was 0.153 mmol/g, and the adsorption processes of Ru-IIP were more suitable to be expressed by pseudo-first-order kinetic and Langmuir model. The selectivity studied in different binary mixed solutions showed that Ru-IIP has good selectivity, and reusability results showed that Ru-IIP still maintains a good adsorption effect after 8 cycles. In addition, the waste Ru-IIP, a Ru(Ⅲ) remained waste sample was employed as the catalyst for the synthesis of imines, and result showed the mass of adsorbent would reduce after the completion of catalysis, which could not only catalyze the reaction but also reduce pollution.
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Affiliation(s)
- Xiaoyan Zhang
- State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050, Gansu, China; School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, Gansu, China; Gansu Yinguang Chemical Industry Group Co. Ltd, Baiyin 730900, Gansu, China; Baiyin Research Institute of Novel Materials of Lanzhou University of Technology, Baiyin 730900, Gansu, China
| | - Xiaojian Ou
- State Key Laboratory of Nickel and Cobalt Resources Comprehensive Utilization, Jinchang 737100, Gansu, China
| | - Jun Zhang
- State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050, Gansu, China; School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, Gansu, China
| | - Zhengcan Chen
- State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050, Gansu, China; School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, Gansu, China
| | - Chunli Liu
- State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050, Gansu, China; School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, Gansu, China
| | - Hui Li
- State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050, Gansu, China; School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, Gansu, China
| | - Xiaoming Li
- State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050, Gansu, China; School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, Gansu, China
| | - Yuan Sun
- Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, Liaoning, China
| | - Zhenbin Chen
- State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou 730050, Gansu, China; School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou 730050, Gansu, China.
| | - Jinian Zhu
- State Key Laboratory of Nickel and Cobalt Resources Comprehensive Utilization, Jinchang 737100, Gansu, China
| | - Sujun Lu
- State Key Laboratory of Nickel and Cobalt Resources Comprehensive Utilization, Jinchang 737100, Gansu, China
| | - Peng Zhang
- State Key Laboratory of Nickel and Cobalt Resources Comprehensive Utilization, Jinchang 737100, Gansu, China
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Chitosan/Phosphate Rock-Derived Natural Polymeric Composite to Sequester Divalent Copper Ions from Water. NANOMATERIALS 2021; 11:nano11082028. [PMID: 34443859 PMCID: PMC8400442 DOI: 10.3390/nano11082028] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 08/03/2021] [Accepted: 08/05/2021] [Indexed: 12/14/2022]
Abstract
Herein, a chitosan (CH) and fluroapatite (TNP) based CH-TNP composite was synthesized by utilizing seafood waste and phosphate rock and was tested for divalent copper (Cu(II)) adsorptive removal from water. The XRD and FT-IR data affirmed the formation of a CH-TNP composite, while BET analysis showed that the surface area of the CH-TNP composite (35.5 m2/g) was twice that of CH (16.7 m2/g). Mechanistically, electrostatic, van der Waals, and co-ordinate interactions were primarily responsible for the binding of Cu(II) with the CH-TNP composite. The maximum Cu(II) uptake of both CH and CH-TNP composite was recorded in the pH range 3-4. Monolayer Cu(II) coverage over both CH and CH-TNP surfaces was confirmed by the fitting of adsorption data to a Langmuir isotherm model. The chemical nature of the adsorption process was confirmed by the fitting of a pseudo-second-order kinetic model to adsorption data. About 82% of Cu(II) from saturated CH-TNP was recovered by 0.5 M NaOH. A significant drop in Cu(II) uptake was observed after four consecutive regeneration cycles. The co-existing ions (in binary and ternary systems) significantly reduced the Cu(II) removal efficacy of CH-TNP.
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Bakry AR, Zaki DI, Gamil EA, El Hady SM, Abdel Fattah NA. Selective separation of uranium using modified Dowex 1X8 /TOA from carbonate leaching of Dolostone ore, Allouga area, Sinai. Z Anorg Allg Chem 2021. [DOI: 10.1002/zaac.202100099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Ahmed R. Bakry
- Nuclear Materials Authority P.O.Box 530, El Maadi Cairo Egypt
| | - Doaa I. Zaki
- Nuclear Materials Authority P.O.Box 530, El Maadi Cairo Egypt
| | - Elham A. Gamil
- Nuclear Materials Authority P.O.Box 530, El Maadi Cairo Egypt
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Structure, adsorption and separation comparison between the thermosensitive block segment polymer modified ReO4− ion imprinted polymer and traditional ReO4− ion imprinted polymer. REACT FUNCT POLYM 2021. [DOI: 10.1016/j.reactfunctpolym.2021.104929] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Şenol ZM. A chitosan-based composite for adsorption of uranyl ions; mechanism, isothems, kinetics and thermodynamics. Int J Biol Macromol 2021; 183:1640-1648. [PMID: 34044032 DOI: 10.1016/j.ijbiomac.2021.05.130] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 04/28/2021] [Accepted: 05/19/2021] [Indexed: 10/21/2022]
Abstract
The present paper describes a green and cost-effective approach to investigate chitosan-sepiolite (Ch-Sep) composite as an adsorbent for removal of UO22+ ions in aqueous solution. The Ch-Sep composite was prepared as a beads using with two cross-linking agents: tripolyphosphate (TPP) and epichlorohydrin (ECH). Their adsorption properties for the removal of UO22+ ions in aqueous solution by batch experimental conditions were studied. The adsorptive removal processes of UO22+ ions from aqueous solution were evaluated by Langmuir, Freundlich and Dubinin-Radushkevich isotherm models, and was found to be perfectly fit to the Langmuir model (R2 = 0.971). The maximum adsorption capacity was 0.220 mol kg-1 at 25 °C from Langmuir isotherm model. Adsorption energy was 12.1 kJ mol-1 indicating that the adsorption process was chemical. The adsorption kinetics followed the pseudo second order and intra particle diffusion models. The thermodynamics parameters of UO22+ ions removal from aqueous solution was confirmed spontaneous, endothermic and possible at higher temperatures behavior of adsorption process. The adsorption mechanism of UO22+ ions onto Ch-Sep composite beads was investigated by FT-IR and SEM analysis. These findings revealed the effectiveness and potential of the newly synthesized Ch-Sep composite beads for the removal of UO22+ ions.
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Affiliation(s)
- Zeynep Mine Şenol
- Cumhuriyet University, Zara Vocational School, Department of Food Technology, 58140 Sivas, Turkey.
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