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Chen J, Shehzad H, Wang J, Liu Z, Farooqi ZH, Sharif A, Ahmed E, Begum R, Xu L, Zhou L, Ouyang J, Irfan A, Chaudhry AR, Ali M. Investigating the synergetic effect of tungsten oxide doping into the 1,3-dicarbonyl moiety grafted chitosan and phytic acid impregnated sodium alginate for efficient U(VI) adsorption. Int J Biol Macromol 2024; 277:134160. [PMID: 39059538 DOI: 10.1016/j.ijbiomac.2024.134160] [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: 02/23/2024] [Revised: 06/26/2024] [Accepted: 07/23/2024] [Indexed: 07/28/2024]
Abstract
In this work, chemical modification of the chitosan with ethyl acetoacetate was performed through a base-catalyzed reaction in which epichlorohydrin facilitated the insertion as well as nucleophilic substitution reaction to graft the 1,3-dioxo moiety across the linear chains of the base biopolymer to establish specificity and selectivity for U(VI) removal. The modified chitosan (EAA-CS) was intercalated into phosphate rich alginate matrix (PASA). Later on, the WO3-doped composites with different WO3 to PASA mass ratio were prepared and characterized using FTIR, XPS, SEM-EDS, XRD, and elemental mapping analysis. WO3 significantly contributed to chemically stable inorganic-organic composites with improved porous texture. Among the prepared composites, MCPS-3 microspherical beads, having mass ratio of 30.0 % w/w, exhibited excellent sorption capacity for U(VI) at an optimal pH 4.5. The successful U(VI) sorption was validated by the existence of two U4f peaks at 392.25 and 381.36 eV due to U4f5/2 and U4f7/2 sub-peaks with an intensity ratio of 3:4, respectively. Batch mode sorption kinetics followed pseudo-second-order rate equation (R2 ≈ 0.99, qe,th ≈ 116.88 mg/g, k2 = 0.86 × 10-4 g/mg.min-1) and equilibrium sorption data aligns with Langmuir (R2 = 0.99, qm = 343.85 mg/g at 310 K and pH = 4.5, KL = 2.00 × 10-2 L/mg) and Temkin models (R2 ≈ 0.99). Thermodynamic parameters ΔHo (30.51 kJ/mol), ΔSo (0.19 kJ/mol.K) and ΔGo (-25.64, -26.89, and - 27.91 kJ/mol) at 298, 305, and 310 K, respectively, suggested that the uptake process is feasible, endothermic and spontaneous. Based on these findings, it is reasonable to conclude that MCPS-3 could be a better hydrogel-based biomaterial for appreciable uranium recovery.
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Affiliation(s)
- Jiaai Chen
- School of Chemistry and Materials Science, East China University of Technology, 418 Guanglan Road, 330013 Nanchang, China
| | - Hamza Shehzad
- School of Chemistry and Materials Science, East China University of Technology, 418 Guanglan Road, 330013 Nanchang, China; State Key Laboratory for Nuclear Resources and Environment, East China University of Technology, 418 Guanglan Road, 330013 Nanchang, China.
| | - Junjie Wang
- School of Chemistry and Materials Science, East China University of Technology, 418 Guanglan Road, 330013 Nanchang, China
| | - Zhirong Liu
- School of Chemistry and Materials Science, East China University of Technology, 418 Guanglan Road, 330013 Nanchang, China; State Key Laboratory for Nuclear Resources and Environment, East China University of Technology, 418 Guanglan Road, 330013 Nanchang, China.
| | - Zahoor H Farooqi
- School of Chemistry, University of the Punjab, New Campus, Lahore 54590, Pakistan.
| | - Ahsan Sharif
- School of Chemistry, University of the Punjab, New Campus, Lahore 54590, Pakistan
| | - Ejaz Ahmed
- School of Chemistry, University of the Punjab, New Campus, Lahore 54590, Pakistan
| | - Robina Begum
- School of Chemistry, University of the Punjab, New Campus, Lahore 54590, Pakistan
| | - Li Xu
- School of Chemistry and Materials Science, East China University of Technology, 418 Guanglan Road, 330013 Nanchang, China
| | - Limin Zhou
- School of Chemistry and Materials Science, East China University of Technology, 418 Guanglan Road, 330013 Nanchang, China
| | - Jinbo Ouyang
- School of Chemistry and Materials Science, East China University of Technology, 418 Guanglan Road, 330013 Nanchang, China
| | - Ahmad Irfan
- Department of Chemistry, Faculty of Science, King Khalid University, P.O. Box 9004, Abha 61413, Saudi Arabia
| | - Aijaz Rasool Chaudhry
- Department of Physics, College of Science, University of Bisha, P.O. Box 551, Bisha 61922, Saudi Arabia
| | - Muhammad Ali
- Faculty of Agriculture Sciences, University of the Punjab, New Campus, Lahore 54590, Pakistan
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Lin T, Chen T, Jiao C, Zhang H, Hou K, Jin H, Liu Y, Zhu W, He R. Ion pair sites for efficient electrochemical extraction of uranium in real nuclear wastewater. Nat Commun 2024; 15:4149. [PMID: 38755163 PMCID: PMC11099191 DOI: 10.1038/s41467-024-48564-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Accepted: 05/06/2024] [Indexed: 05/18/2024] Open
Abstract
Electrochemical uranium extraction from nuclear wastewater represents an emerging strategy for recycling uranium resources. However, in nuclear fuel production which generates the majority of uranium-containing nuclear wastewater, fluoride ion (F-) co-exists with uranyl (UO22+), resulting in the complex species of UO2Fx and thus decreasing extraction efficiency. Herein, we construct Tiδ+-PO43- ion pair extraction sites in Ti(OH)PO4 for efficient electrochemical uranium extraction in wastewater from nuclear fuel production. These sites selectively bind with UO2Fx through the combined Ti-F and multiple O-U-O bonds. In the uranium extraction, the uranium species undergo a crystalline transition from U3O7 to K3UO2F5. In real nuclear wastewater, the uranium is electrochemically extracted with a high efficiency of 99.6% and finally purified as uranium oxide powder, corresponding to an extraction capacity of 6829 mg g-1 without saturation. This work paves an efficient way for electrochemical uranium recycling in real wastewater of nuclear production.
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Affiliation(s)
- Tao Lin
- State Key Laboratory of Environment-friendly Energy Materials, School of National Defense, School of Life Science & Engineering, School of Materials & Chemistry, National Co-innovation Center for Nuclear Waste Disposal & Environmental Safety, Sichuan Civil-military Integration Institute, Southwest University of Science & Technology, Mianyang, P. R. China
| | - Tao Chen
- State Key Laboratory of Environment-friendly Energy Materials, School of National Defense, School of Life Science & Engineering, School of Materials & Chemistry, National Co-innovation Center for Nuclear Waste Disposal & Environmental Safety, Sichuan Civil-military Integration Institute, Southwest University of Science & Technology, Mianyang, P. R. China
| | - Chi Jiao
- School of Chemistry and Materials Science, Anhui Normal University, Wuhu, P. R. China
| | - Haoyu Zhang
- State Key Laboratory of Environment-friendly Energy Materials, School of National Defense, School of Life Science & Engineering, School of Materials & Chemistry, National Co-innovation Center for Nuclear Waste Disposal & Environmental Safety, Sichuan Civil-military Integration Institute, Southwest University of Science & Technology, Mianyang, P. R. China
| | - Kai Hou
- State Key Laboratory of Environment-friendly Energy Materials, School of National Defense, School of Life Science & Engineering, School of Materials & Chemistry, National Co-innovation Center for Nuclear Waste Disposal & Environmental Safety, Sichuan Civil-military Integration Institute, Southwest University of Science & Technology, Mianyang, P. R. China
| | - Hongxiang Jin
- State Key Laboratory of Environment-friendly Energy Materials, School of National Defense, School of Life Science & Engineering, School of Materials & Chemistry, National Co-innovation Center for Nuclear Waste Disposal & Environmental Safety, Sichuan Civil-military Integration Institute, Southwest University of Science & Technology, Mianyang, P. R. China
| | - Yan Liu
- School of Chemistry and Materials Science, Anhui Normal University, Wuhu, P. R. China.
| | - Wenkun Zhu
- State Key Laboratory of Environment-friendly Energy Materials, School of National Defense, School of Life Science & Engineering, School of Materials & Chemistry, National Co-innovation Center for Nuclear Waste Disposal & Environmental Safety, Sichuan Civil-military Integration Institute, Southwest University of Science & Technology, Mianyang, P. R. China.
| | - Rong He
- State Key Laboratory of Environment-friendly Energy Materials, School of National Defense, School of Life Science & Engineering, School of Materials & Chemistry, National Co-innovation Center for Nuclear Waste Disposal & Environmental Safety, Sichuan Civil-military Integration Institute, Southwest University of Science & Technology, Mianyang, P. R. China.
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3
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Zhou L, Lian J, Li Q, Li J, Shao Y, Wu G, Ding T, Cui X, Chen T, Zhu W. Unveiling the Critical Role of Surface Hydroxyl Groups for Electro-Assisted Uranium Extraction from Wastewater. Inorg Chem 2023; 62:21518-21527. [PMID: 38087775 DOI: 10.1021/acs.inorgchem.3c03967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2023]
Abstract
The electro-driven extraction of uranium from fluorine-containing uranium wastewater is anticipated to address the challenge of separating fluoro-uranium complexes in conventional technologies. Herein, we developed hydroxy-rich cobalt-based oxides (CoOx) for electro-assisted uranium extraction from fluorine-containing wastewater. Relying on theoretical calculations and other spectral measurements, the hydroxy-rich CoOx nanosheets can enhance the affinity for uranium due to the existence of a substantial quantity of hydroxyl groups. Accordingly, the CoOx nanosheets exhibit outstanding U(VI) removal efficiency in the presence of fluorine ions. Through the utilization of X-ray absorption fine structure (XAFS), we confirm that hydroxy-rich CoOx nanosheets capture free uranyl ions to form a sturdy 2Oax-1U-3Oeq configuration, which can be achieved through electro-driven fluorine-uranium separation. Notably, for the first time, the whole reaction process of uranium species on the CoOx surface from the initial uranium single atom growth to uranium oxide nanosheets is monitored by aberration-corrected transmission electron microscopes (AC-TEM). This work provides a paradigm for the advancement of novel functional materials as electrocatalysts for uranium extraction, as well as a new approach for studying the evolution mechanism of uranium species.
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Affiliation(s)
- Li Zhou
- State Key Laboratory of Environment-friendly Energy Materials, School of Environment and Resources, National Co-innovation Center for Nuclear Waste Disposal and Environmental Safety, Southwest University of Science and Technology, Mianyang 621010, P. R. China
| | - Jie Lian
- State Key Laboratory of Environment-friendly Energy Materials, School of Environment and Resources, National Co-innovation Center for Nuclear Waste Disposal and Environmental Safety, Southwest University of Science and Technology, Mianyang 621010, P. R. China
| | - Qiuyang Li
- State Key Laboratory of Environment-friendly Energy Materials, School of Environment and Resources, National Co-innovation Center for Nuclear Waste Disposal and Environmental Safety, Southwest University of Science and Technology, Mianyang 621010, P. R. China
| | - Jin Li
- State Key Laboratory of Environment-friendly Energy Materials, School of Environment and Resources, National Co-innovation Center for Nuclear Waste Disposal and Environmental Safety, Southwest University of Science and Technology, Mianyang 621010, P. R. China
| | - Yuwen Shao
- State Key Laboratory of Environment-friendly Energy Materials, School of Environment and Resources, National Co-innovation Center for Nuclear Waste Disposal and Environmental Safety, Southwest University of Science and Technology, Mianyang 621010, P. R. China
| | - Gang Wu
- State Key Laboratory of Environment-friendly Energy Materials, School of Environment and Resources, National Co-innovation Center for Nuclear Waste Disposal and Environmental Safety, Southwest University of Science and Technology, Mianyang 621010, P. R. China
| | - Tao Ding
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, PR. China
| | - Xudong Cui
- Sichuan New Materials Research Center, Institute of Chemical Materials, China Academy of Engineering Physics, Chengdu 610200, P. R. China
| | - Tao Chen
- State Key Laboratory of Environment-friendly Energy Materials, School of Environment and Resources, National Co-innovation Center for Nuclear Waste Disposal and Environmental Safety, Southwest University of Science and Technology, Mianyang 621010, P. R. China
| | - Wenkun Zhu
- State Key Laboratory of Environment-friendly Energy Materials, School of Environment and Resources, National Co-innovation Center for Nuclear Waste Disposal and Environmental Safety, Southwest University of Science and Technology, Mianyang 621010, P. R. China
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4
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Kersten B, Akolkar R, Duval CE. An electrochemical technique for sensing uranium adsorption and desorption. Anal Chim Acta 2023; 1284:342003. [PMID: 37996162 DOI: 10.1016/j.aca.2023.342003] [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: 06/22/2023] [Revised: 10/27/2023] [Accepted: 11/03/2023] [Indexed: 11/25/2023]
Abstract
Uranium is a toxic, heavy metal that can pose elevated health risks if leached into the environment. Uranium mobility is dependent on many factors, including speciation, solution pH, ligands in solution, and presence of surfaces. Surface adsorption is one phenomenon that inhibits uranium mobility in the environment and is studied as a naturally occurring phenomenon as well an intentional tool for environmental remediation. This work presents and validates a potentiometric, electrochemical technique for sensing uranium adsorption on and desorption from an electrochemically active surface solely through changes of the electrode potential. This novel electrochemical technique presents a new lens to study adsorption that complements external techniques (e.g., spectroscopy). Indication of adsorption and desorption via the electrochemical technique are gravimetrically validated using an electrochemical quartz crystal microbalance. This work contributes a unique, complementary technique that corroborates the adsorption of uranium on an electrode surface.
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Affiliation(s)
- Bethany Kersten
- Department of Chemical and Biomolecular Engineering, Case Western Reserve University, 10900 Euclid Ave, 44106, Cleveland, OH, USA
| | - Rohan Akolkar
- Department of Chemical and Biomolecular Engineering, Case Western Reserve University, 10900 Euclid Ave, 44106, Cleveland, OH, USA
| | - Christine E Duval
- Department of Chemical and Biomolecular Engineering, Case Western Reserve University, 10900 Euclid Ave, 44106, Cleveland, OH, USA.
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5
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Zhu W, Li X, Wang D, Fu F, Liang Y. Advanced Photocatalytic Uranium Extraction Strategies: Progress, Challenges, and Prospects. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2005. [PMID: 37446529 DOI: 10.3390/nano13132005] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 07/03/2023] [Accepted: 07/04/2023] [Indexed: 07/15/2023]
Abstract
Nuclear energy with low carbon emission and high-energy density is considered as one of the most promising future energy sources for human beings. However, the use of nuclear energy will inevitably lead to the discharge of nuclear waste and the consumption of uranium resources. Therefore, the development of simple, efficient, and economical uranium extraction methods is of great significance for the sustainable development of nuclear energy and the restoration of the ecological environment. Photocatalytic U(VI) extraction technology as a simple, highly efficient, and low-cost strategy, received increasing attention from researchers. In this review, the development background of photocatalytic U(VI) extraction and several photocatalytic U(VI) reduction mechanisms are briefly described and the identification methods of uranium species after photocatalytic reduction are addressed. Subsequently, the modification strategies of several catalysts used for U(VI) extraction are summarized and the advantages and disadvantages of photocatalytic U(VI) extraction are compared. Additionally, the research progress of photocatalytic technology for U(VI) extraction in actual uranium-containing wastewater and seawater are evaluated. Finally, the current challenges and the developments of photocatalytic U(VI) extraction technology in the future are prospected.
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Affiliation(s)
- Wangchuan Zhu
- Research Institute of Comprehensive Energy Industry Technology, School of Chemistry & Chemical Engineering, Yan'an University, Yan'an 716000, China
| | - Xiang Li
- Research Institute of Comprehensive Energy Industry Technology, School of Chemistry & Chemical Engineering, Yan'an University, Yan'an 716000, China
| | - Danjun Wang
- Research Institute of Comprehensive Energy Industry Technology, School of Chemistry & Chemical Engineering, Yan'an University, Yan'an 716000, China
| | - Feng Fu
- Research Institute of Comprehensive Energy Industry Technology, School of Chemistry & Chemical Engineering, Yan'an University, Yan'an 716000, China
| | - Yucang Liang
- Institute of Inorganic Chemistry, University of Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany
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6
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Li M, Xu W, Wu X, Zhang X, Fang Q, Cai T, Yang J, Hua Y. Enhanced mechanism of calcium towards uranium incorporation and stability in magnetite during electromineralization. JOURNAL OF HAZARDOUS MATERIALS 2023; 457:131641. [PMID: 37329595 DOI: 10.1016/j.jhazmat.2023.131641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 05/05/2023] [Accepted: 05/13/2023] [Indexed: 06/19/2023]
Abstract
Doping uranium into a room-temperature stable Fe3O4 lattice structure effectively reduces its migration. However, the synergistic or competitive effects of coexisting ions in an aqueous solution directly affect the uranium mineralization efficiency and the structural stability of uranium-bearing Fe3O4. The effects of calcium, carbonate, and phosphate on uranium electromineralization were investigated via batch experiments and theoretical calculations. Calcium incorporated into the Fe3O4 lattice increased the level and stability of doped uranium in Fe3O4. Uranium and calcium occupied the octahedral and tetrahedral sites of Fe3O4, respectively; the formation energy was only -10.23 eV due to strong hybridization effects between Fe1s, U4f, O2p, and Ca3d orbitals. Compared to the uranium-doped Fe3O4, uranium leaching ratios decreased by 19.2 % and 48.9 % under strongly acidic and alkaline conditions after 120 days. However, high concentrations of phosphate inhibited Fe3O4 crystallization. These results should provide new avenues for the development of multi-metal co-doping technologies and mineralization optimization to treat uranium-containing complex wastewater.
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Affiliation(s)
- Mi Li
- School of Resource & Environment and Safety Engineering, University of South China, Hengyang 421001, China
| | - Wanqin Xu
- School of Resource & Environment and Safety Engineering, University of South China, Hengyang 421001, China
| | - Xiaoyan Wu
- School of Resource & Environment and Safety Engineering, University of South China, Hengyang 421001, China
| | - Xiaowen Zhang
- Hengyang Key Laboratory of Soil Pollution Control and Remediation, University of South China, Hengyang 421001, China
| | - Qi Fang
- School of Resource & Environment and Safety Engineering, University of South China, Hengyang 421001, China
| | - Tao Cai
- School of Resource & Environment and Safety Engineering, University of South China, Hengyang 421001, China
| | - Jianping Yang
- School of Resource & Environment and Safety Engineering, University of South China, Hengyang 421001, China; State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
| | - Yilong Hua
- School of Resource & Environment and Safety Engineering, University of South China, Hengyang 421001, China; State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China.
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7
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Zhu W, Wang C, Hui W, Huang X, Yang C, Liang Y. Intrinsically morphological effect of perovskite BaTiO 3 boosting piezocatalytic uranium extraction efficiency and mechanism investigation. JOURNAL OF HAZARDOUS MATERIALS 2023; 455:131578. [PMID: 37172389 DOI: 10.1016/j.jhazmat.2023.131578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 05/01/2023] [Accepted: 05/03/2023] [Indexed: 05/14/2023]
Abstract
Developing a convenient, efficient and eco-friendly approach for the recovery of U(VI) ion is a key measure to solve the environmental problems arising from the utilization of nuclear energy. Herein, the high efficiency of uranium extraction is realized by the piezo property of perovskite BaTiO3, revealing the intrinsically morphological engineering effect on the piezocatalytic performance. Especially, BaTiO3 nanowires (BTO NWs) exhibit not only an excellent piezocatalytic activity with U(VI) extraction rate of 96.8% in a UO2(NO3)2 aqueous solution compared to 71.3% of BaTiO3 nanoparticles (BTO NPs), but also a promising piezocatalyst for U extraction in a real U-mining wastewater with various pH ranges. Piezo response force microscopy and finite elemental simulation show that the piezo response of BTO NWs is much higher than BTO NPs. Additionally, some factors (pH, various ions, different powers) are explored on piezocatalytic efficiency for U(VI) extraction. The results from electron spin resonance and the charge/radical capture experiments confirm that the active species (e-, •O2-, •OH) stemmed from the piezo induction of BTO NWs and BTO NPs in the piezocatalytic U(VI) reduction process. The present work reveals the structure-performance correlation during piezocatalysis and highlights the crucial role of piezocatalysis in dealing with environmental problems.
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Affiliation(s)
- Wangchuan Zhu
- Research Institute of Comprehensive Energy Industry Technology, School of Chemistry & Chemical Engineering, Yan'an University, Yan'an 716000, Shaanxi, China
| | - Chuantao Wang
- Research Institute of Comprehensive Energy Industry Technology, School of Chemistry & Chemical Engineering, Yan'an University, Yan'an 716000, Shaanxi, China
| | - Wenhao Hui
- Research Institute of Comprehensive Energy Industry Technology, School of Chemistry & Chemical Engineering, Yan'an University, Yan'an 716000, Shaanxi, China
| | - Xin Huang
- Research Institute of Comprehensive Energy Industry Technology, School of Chemistry & Chemical Engineering, Yan'an University, Yan'an 716000, Shaanxi, China
| | - Chunming Yang
- Research Institute of Comprehensive Energy Industry Technology, School of Chemistry & Chemical Engineering, Yan'an University, Yan'an 716000, Shaanxi, China.
| | - Yucang Liang
- Institut für Anorganische Chemie, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany.
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Jian J, Kang H, Yu D, Qiao X, Liu Y, Li Y, Qin W, Wu X. Bi-Functional Co/Al Modified 1T-MoS 2 /rGO Catalyst for Enhanced Uranium Extraction and Hydrogen Evolution Reaction in Seawater. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2207378. [PMID: 36871152 DOI: 10.1002/smll.202207378] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Revised: 02/10/2023] [Indexed: 05/25/2023]
Abstract
Uranium is a key element in the preparation of nuclear fuel. An electrochemical uranium extraction technique is proposed to achieve high efficiency uranium extraction performance through HER catalyst. However, it is still a challenge to design and develop a high-performance hydrogen evolution reaction (HER) catalyst for rapid extraction and recovery of uranium from seawater. Herein, a bi-functional Co, Al modified 1T-MoS2 /reduced graphene oxide (CA-1T-MoS2 /rGO) catalyst, showing a good HER performance with a HER overpotential of 466 mV at 10 mA cm-2 in simulated seawater, is first developed. Benefiting from the high HER performance of CA-1T-MoS2 /rGO, efficient uranium extraction is achieved with a uranium extraction capacity of 1990 mg g-1 in simulated seawater without post-treatment, exhibiting a good reusability. The results of experiments and density functional theory (DFT) show that a high uranium extraction and recovery capability is attributed to the synergy effect of the improved HER performance and the strong adsorption capacity between U and OH*. This work provides a new strategy for the design and preparation of bi-functional catalysts with high HER performance and uranium extraction and recovery capabilities in seawater.
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Affiliation(s)
- Jiahuang Jian
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, P. R. China
| | - Hongjun Kang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, P. R. China
| | - Dongmei Yu
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, P. R. China
| | - Xianshu Qiao
- School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, 150001, P. R. China
| | - Yang Liu
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, P. R. China
| | - Yang Li
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, P. R. China
| | - Wei Qin
- School of Materials Science and Engineering, Harbin Institute of Technology, Harbin, 150001, P. R. China
| | - Xiaohong Wu
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, P. R. China
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Kang J, Hang J, Chen B, Chen L, Zhao P, Xu Y, Luo Y, Xia C. Amide Linkages in Pyrene-Based Covalent Organic Frameworks toward Efficient Photocatalytic Reduction of Uranyl. ACS APPLIED MATERIALS & INTERFACES 2022; 14:57225-57234. [PMID: 36525644 DOI: 10.1021/acsami.2c16702] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
The bond linkages in covalent organic frameworks (COFs) partly determine its physical and chemical properties, thus affecting the photoreactive activity by influencing the generation of photoelectrons and the separation of excitons. Herein, pyrene-based amide COF 4,4',4″,4‴-(pyrene-1,3,6,8-tetrayl)tetrabenzaldehyde-3,8-diamino-6-phenylphenanthridine (TFPPy-DP) was synthesized by postsynthetic modification of imine COFs. Due to the introduction of oxygen atoms into the framework and the change in polarity, an increased number of photogenerated electrons and a wide band gap for amide COFs were found, hydrophilicity and dispersibility were prompted as well. Both imine and amide COF TFPPy-DP were applied in the photocatalytic reduction and removal of toxic U(VI) under visible light, the catalytic reduction equilibrium (91% removal percentage of 238 ppm U at pH 3) was achieved by imine COFs with 10 h of irradiation, while amide COFs only took 2 h of irradiation (82% removal percentage). The much faster photocatalytic reduction rate of U(VI) can be attributed to the fact that amide COF TFPPy-DP retained crystallinity and permanent porosity and exhibited lower electrochemical impedance and enhanced charge separation and accumulation. Further electronic excitation analysis based on time-dependent density functional theory calculations revealed that the intramolecular charge-transfer effect in amide TFPPy-DP enhanced its photocatalytic rate.
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Affiliation(s)
- Jinyang Kang
- College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Jiahui Hang
- College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Bo Chen
- College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Lang Chen
- College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Pengwei Zhao
- College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Yuwei Xu
- College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Yu Luo
- College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Chuanqin Xia
- College of Chemistry, Sichuan University, Chengdu 610064, China
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Qin Z, Yang C, Shuai W, Jin J, Tang X, Chen F, Shi T, Ye Y, Liang Y, Wang Y. NiS@CdS interfacial Schottky junction boosting spatial charge separation for highly efficient photocatalytic reduction of U(VI). Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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11
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Qin Z, Ye Y, Li C, Liang Y, Jin J, Tang X, Chen Formal analyses Y, Chen F, Shi T, Wang Y. Removal and Recovery of Aqueous Uranium Using Photocatalytic Reduction Method: Performance and Implication. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Chen F, Fan B, Wang C, Qian J, Wang B, Tang X, Qin Z, Chen Y, Liu W, Wang A, Ye Y, Wang Y. Weak electro-stimulation promotes microbial uranium removal: Efficacy and mechanisms. JOURNAL OF HAZARDOUS MATERIALS 2022; 439:129622. [PMID: 35868082 DOI: 10.1016/j.jhazmat.2022.129622] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 07/14/2022] [Accepted: 07/15/2022] [Indexed: 06/15/2023]
Abstract
Removal and recovery of uranium from uranium-mine wastewater is beneficial to environmental protection and resource preservation. Reduction of soluble hexavalent U (U(VI)) to insoluble tetravalent uranium (U(IV)) by microbes is a plausible approach for this purpose, but its practical implementation has long been restricted by its intrinsic drawbacks. The electro-stimulated microbial process offers promise in overcoming these drawbacks. However, its applicability in real wastewater has not been evaluated yet, and its U(VI) removal mechanisms remain poorly understood. Herein, we report that introducing a weak electro-stimulation considerably boosted microbial U(VI) removal activities in both synthetic and real wastewater. The U(VI) removal has proceeded via U(VI)-to-U(IV) reduction in the biocathode, and the electrochemical characterization demonstrates the crucial role of the electroactive biofilm. Microbial community analysis shows that the broad biodiversity of the cathode biofilm is capable of U(VI) reduction, and the molecular ecological network indicates that synthetic metabolisms among electroactive and metal-reducing bacteria play major roles in electro-microbial-mediated uranium removal. Metagenomic sequencing elucidates that the electro-stimulated U(VI) bioreduction may proceed via e-pili, extracellular electron shuttles, periplasmic and outer membrane cytochrome, and thioredoxin pathways. These findings reveal the potential and mechanism of the electro-stimulated U(VI) bioreduction system for the treatment of U-bearing wastewater.
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Affiliation(s)
- Fan Chen
- School of Ecology and Environment, Northwestern Polytechnical University, Xi'an 710129, PR China
| | - Beilei Fan
- School of Ecology and Environment, Northwestern Polytechnical University, Xi'an 710129, PR China
| | - Chunlin Wang
- School of Ecology and Environment, Northwestern Polytechnical University, Xi'an 710129, PR China
| | - Jin Qian
- School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an 710129, PR China
| | - Bo Wang
- Center for Electromicrobiology, Section for Microbiology, Department of Biology, Aarhus University, Aarhus C 8000, Denmark
| | - Xin Tang
- School of Ecology and Environment, Northwestern Polytechnical University, Xi'an 710129, PR China
| | - Zemin Qin
- School of Ecology and Environment, Northwestern Polytechnical University, Xi'an 710129, PR China
| | - Yanlong Chen
- School of Ecology and Environment, Northwestern Polytechnical University, Xi'an 710129, PR China
| | - Wenzong Liu
- State Key Laboratory of Urban Water Resource and Environment, School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen 518055, PR China
| | - Aijie Wang
- State Key Laboratory of Urban Water Resource and Environment, School of Civil and Environmental Engineering, Harbin Institute of Technology Shenzhen, Shenzhen 518055, PR China
| | - Yin Ye
- School of Ecology and Environment, Northwestern Polytechnical University, Xi'an 710129, PR China.
| | - Yuheng Wang
- School of Ecology and Environment, Northwestern Polytechnical University, Xi'an 710129, PR China.
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Lin L, Liu T, Qie Y, Liu W, Meng Y, Yuan Q, Luan F. Electrocatalytic Removal of Low-Concentration Uranium Using TiO 2 Nanotube Arrays/Ti Mesh Electrodes. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:13327-13337. [PMID: 35973206 DOI: 10.1021/acs.est.2c02632] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Groundwater containing naturally occurring uranium is a conventional drinking water source in many countries. Removal of low concentrations of uranium complexes in groundwater is a challenging task. Here, we demonstrated that the TiO2 nanotube arrays/Ti (TNTAs/Ti) mesh electrode could break through the concentration limit and efficiently remove low concentrations of uranium complexes from both simulated and real groundwater. U(VI) complexes in groundwater were electro-reduced to UO2 and deposited on the TNTAs/Ti mesh electrode surface. The adsorption rate and electron transfer rate of the anatase TNTAs/Ti mesh electrode were twice that of the rutile TNTAs/Ti mesh electrode. Therefore, the anatase TNTAs/Ti mesh electrode exhibited excellent electrocatalytic activity toward the electrochemical removal of U(VI), which could work at a higher potential and significantly reduce the energy consumption of U(VI) removal. The U(VI) adsorption capacity on the anatase TNTAs/Ti mesh electrode was limited due to the low U(VI) concentration. However, the anatase TNTAs/Ti mesh electrode displayed a huge U(VI) removal capacity using the electroreduction method, where adsorption and reduction of U(VI) were mutually promoted and induced continuous accumulation of UO2 on the electrode. The accumulated UO2 can be easily recovered in dilute HNO3, and the electrode can be used repeatedly.
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Affiliation(s)
- Leiming Lin
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Tian Liu
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, P. R. China
| | - Yukang Qie
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Wenbin Liu
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Ying Meng
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, P. R. China
| | - Qingke Yuan
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, P. R. China
| | - Fubo Luan
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
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Liu C, Li Y, Liu S, Zhou Y, Liu D, Fu C, Ye L. Efficient extraction of UO22+ from seawater by polyethylenimine functionalized activated carbon (PEI-AC): adsorption performance and mechanism. J Radioanal Nucl Chem 2022. [DOI: 10.1007/s10967-022-08523-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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