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Li X, Liu RH, Han XK, Ma XX, Zhang L, Zhu HJ, Kong XJ, Li X, Yan H, Zhou HW, Li YW, Wang SN, Zhong DC, Dai FN, Dou MY, Hao HG. Enhancing Photoreduction of Cr(VI) through a Multivalent Manganese(II)-Organic Framework Incorporating Anthracene Moieties. Inorg Chem 2024; 63:16897-16907. [PMID: 39197012 DOI: 10.1021/acs.inorgchem.4c02816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2024]
Abstract
Exploiting a photocatalyst with high stability and excellent activity for Cr(VI) reduction under mild conditions is crucial yet challenging. Herein, the rigid aromatic multicarboxylate ligand with chromophore anthracene was selected to coordinate with multivalent metal ion manganese and to obtain a stable two-dimensional (2D) Mn-based metal-organic framework (MOF), LCUH-120, which can efficiently and quickly convert Cr(VI) into Cr(III) under light without the need for any additional photosensitizer. The efficient photosensitive anthracene group serves as a photosensitizer center and multivalent Mn(II) ion as a photocatalyst center in LCUH-120, and the conversion of Cr(VI) to Cr(III) can be realized completely in just 40 min. Specifically, the rate constant (k) and reduction rate of the Cr(VI) photocatalytic reaction can be high up to 0.134 min-1 and 2.50 mgCr(VI) g-1cata min-1 in an acidic environment (pH = 2), respectively. Compared to our previously reported three-dimensional (3D) Sm-MOF, LCUH-120 exhibits a significantly higher catalytic reaction rate, which might be ascribed to the fact that the photocatalyst center Mn node can improve the rate of electron transfer and promote the separation of holes and photogenerated electrons. In an acidic environment, the reaction mechanism can be verified through various contrast experiments and theoretical simulations.
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Affiliation(s)
- Xin Li
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, China
| | - Rong-Hua Liu
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, China
| | - Xue-Ke Han
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, China
| | - Xiao-Xue Ma
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, China
| | - Lu Zhang
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, China
| | - Hong-Jie Zhu
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, China
| | - Xiang-Jin Kong
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, China
| | - Xia Li
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, China
| | - Hui Yan
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, China
| | - Hua-Wei Zhou
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, China
| | - Yun-Wu Li
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, China
| | - Su-Na Wang
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, China
| | - Di-Chang Zhong
- Institute for New Energy Materials and Low Carbon Technologies School of Materials Science and Engineering Tianjin University of Technology, Tianjin 300384, China
| | - Fang-Na Dai
- College of Science, School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao, Shandong 266580, China
| | - Ming-Yu Dou
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, China
| | - Hong-Guo Hao
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252059, China
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Cai J, Shi J, Zhang J, Miao X, Wang S, Xiao L, Liu D, Hou L. Preparation of Guanidine-Grafted NH 2-MIL-101(Fe)/Polyvinylidene Fluoride Mixed Matrix Membranes for Adsorption of Pb 2+ for Isopropanol Purification. Inorg Chem 2024. [PMID: 39228221 DOI: 10.1021/acs.inorgchem.4c03034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/05/2024]
Abstract
Electronic-grade isopropyl alcohol is widely utilized in the cleaning of semiconductors and microelectronic components. Removing ions like Pb2+ is crucial since the presence of impurities may cause degradation of electronics, increased failure rates, and short circuits. Membrane materials offer a number of advantages in the field of adsorption separation; however, the lack of adsorption sites results in limited adsorption capacity. In the current work, guanidino-grafted NH2-MIL-101(Fe) was incorporated into polyvinylidene fluoride (PVDF) to prepare MOF/PVDF mixed matrix membranes (NM/PVDF) for the removal of Pb2+ from isopropanol. Benefiting from the larger specific surface area and more lone electron pairs in the guanidine group, the Pb2+ adsorption capacity of the as-prepared NM/PVDF membrane was 29.4458 mg/g, which was higher than that of the NH2-MIL-101(Fe)/PVDF membrane (20.9306 mg/g) and the pure PVDF membrane (6.7324 mg/g). The NM/PVDF membrane was able to reduce the concentration of Pb2+ from 500 to 86.73 ppb. This work highlights the potential of guanidine-grafted Fe-based MOFs/PVDF membranes as adsorbents for acquisition of electronic-grade solvents.
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Affiliation(s)
- Jingyu Cai
- Department of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Fuzhou University, Fuzhou 350116, China
- Qingyuan Innovation Laboratory, Quanzhou 362801, China
| | - Junjie Shi
- Department of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Fuzhou University, Fuzhou 350116, China
| | - Jian Zhang
- Department of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Fuzhou University, Fuzhou 350116, China
| | - Xiaoyu Miao
- Department of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Fuzhou University, Fuzhou 350116, China
| | - Sen Wang
- Department of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Fuzhou University, Fuzhou 350116, China
| | - Longqiang Xiao
- Department of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Fuzhou University, Fuzhou 350116, China
- Qingyuan Innovation Laboratory, Quanzhou 362801, China
| | - Dan Liu
- College of Materials and Chemical Engineering, Minjiang University, Fuzhou 350108, China
| | - Linxi Hou
- Department of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Fuzhou University, Fuzhou 350116, China
- Qingyuan Innovation Laboratory, Quanzhou 362801, China
- Fujian Key Laboratory of Advanced Manufacturing Technology of Specialty Chemicals, Fuzhou University, Fuzhou 350116, China
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3
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Tian S, Shi X, Wang S, He Y, Zheng B, Deng X, Zhou Z, Wu W, Xin K, Tang L. Recyclable Fe 3O 4@UiO-66-PDA core-shell nanomaterials for extensive metal ion adsorption: Batch experiments and theoretical analysis. J Colloid Interface Sci 2024; 665:465-476. [PMID: 38537592 DOI: 10.1016/j.jcis.2024.03.150] [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: 01/23/2024] [Revised: 03/22/2024] [Accepted: 03/22/2024] [Indexed: 04/17/2024]
Abstract
With the ever-increasing challenge of heavy metal pollution, the imperative for developing highly efficient adsorbents has become apparent to remove metal ions from wastewater completely. In this study, we introduce a novel magnetic core-shell adsorbent, Fe3O4@UiO-66-PDA. It features a polydopamine (PDA) modified zirconium-based metal-organic framework (UiO-66) synthesized through a simple solvothermal method. The adsorbent boasts a unique core-shell architecture with a high specific surface area, abundant micropores, and remarkable thermal stability. The adsorption capabilities of six metal ions (Fe3+, Mn2+, Pb2+, Cu2+, Hg2+, and Cd2+) were systematically investigated, guided by the theory of hard and soft acids and bases. Among these, three representative metal ions (Fe3+, Pb2+, and Hg2+) were scrutinized in detail. The activated Fe3O4@UiO-66-PDA exhibited exceptional adsorption capacities for these metal ions, achieving impressive values of 97.99 mg/g, 121.42 mg/g, and 130.72 mg/g, respectively, at pH 5.0. Moreover, the adsorbent demonstrated efficient recovery from aqueous solution using an external magnet, maintaining robust adsorption efficiency (>80%) and stability even after six cycles. To delve deeper into the optimized adsorption of Hg2+, density functional theory (DFT) analysis was employed, revealing an adsorption energy of -2.61 eV for Hg2+. This notable adsorption capacity was primarily attributed to electron interactions and coordination effects. This study offers valuable insights into metal ion adsorption facilitated, by magnetic metal-organic framework (MOF) materials.
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Affiliation(s)
- Shuangqin Tian
- School of Chemistry Science and Engineering, Yunnan University, Kunming 650091, Yunnan Province, PR China.
| | - Xin Shi
- School of Chemistry Science and Engineering, Yunnan University, Kunming 650091, Yunnan Province, PR China; Honghe Prefecture Nationality Senior High School, Honghe 661200, Yunnan Province, PR China.
| | - Shujie Wang
- School of Chemistry Science and Engineering, Yunnan University, Kunming 650091, Yunnan Province, PR China.
| | - Yi He
- School of Chemistry Science and Engineering, Yunnan University, Kunming 650091, Yunnan Province, PR China.
| | - Bifang Zheng
- School of Chemistry Science and Engineering, Yunnan University, Kunming 650091, Yunnan Province, PR China.
| | - Xianhong Deng
- School of Chemistry Science and Engineering, Yunnan University, Kunming 650091, Yunnan Province, PR China.
| | - Ziqin Zhou
- School of Chemistry Science and Engineering, Yunnan University, Kunming 650091, Yunnan Province, PR China.
| | - Wenbin Wu
- School of Chemistry Science and Engineering, Yunnan University, Kunming 650091, Yunnan Province, PR China.
| | - Kai Xin
- School of Chemistry Science and Engineering, Yunnan University, Kunming 650091, Yunnan Province, PR China.
| | - Lihong Tang
- School of Chemistry Science and Engineering, Yunnan University, Kunming 650091, Yunnan Province, PR China.
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Cheng R, Wan Y, Mao X, Wan H, Liu F, Guo L, Zhang B. Regulating the defects of MIL-101(Cr) for the efficient and simultaneous determination of eleven plant growth regulators in fresh fruit juice. Food Chem 2024; 444:138666. [PMID: 38341916 DOI: 10.1016/j.foodchem.2024.138666] [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: 10/11/2023] [Revised: 02/01/2024] [Accepted: 02/02/2024] [Indexed: 02/13/2024]
Abstract
This work presents an efficient sorbent for plant growth regulators (PGRs) by regulating the defects of a metal-organic framework MIL-101(Cr). Using the regulated MIL-101(Cr), we developed a simple and effective method for the simultaneous determination of eleven PGRs in fresh fruit juice. The extraction conditions were optimized by an orthogonal array design. Under optimal conditions, the method showed a satisfactory limit of detection (0.1-1.2 ng/g), recovery rates (83.4-110.2 %), and precision (2.9-18.0 % for intra-day and 2.7-10.8 % for inter-day), as well as a greatly suppressed matrix effect. Notably, regulating the defects significantly enhanced the desorption of PGRs on MIL-101(Cr). The sorbent didn't need to be destroyed to release the adsorbed PGRs and could be reused at least 6 times. Furthermore, the defects of MIL-101(Cr) and interactions between the sorbent and PGRs were studied by TGA, ATR-IR, XPS, NH3-TPD and UV-Vis DRS.
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Affiliation(s)
- Rui Cheng
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, People's Republic of China
| | - Yiqun Wan
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, People's Republic of China; State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, People's Republic of China; Jiangxi Province Key Laboratory of Modern Analytical Science, Nanchang University, Nanchang 330031, People's Republic of China.
| | - Xuejin Mao
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, People's Republic of China.
| | - Hao Wan
- State Key Laboratory of Food Science and Resources, Nanchang University, Nanchang 330047, People's Republic of China
| | - Fan Liu
- Jiangxi Province Key Laboratory of Modern Analytical Science, Nanchang University, Nanchang 330031, People's Republic of China
| | - Lan Guo
- Jiangxi Province Key Laboratory of Modern Analytical Science, Nanchang University, Nanchang 330031, People's Republic of China
| | - Bingzhen Zhang
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, People's Republic of China
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5
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Sikma RE, Song B, Deneff JI, Smith J, Sanchez K, Reyes RA, Lucero LM, Fritzsching KJ, Ilgen AG, Sava Gallis DF. Tuning the pore chemistry of Zr-MOFs for efficient metal ion capture from complex streams. Chem Commun (Camb) 2024; 60:5808-5811. [PMID: 38712454 DOI: 10.1039/d4cc00320a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/08/2024]
Abstract
Metal-organic frameworks (MOFs) have shown promise for adsorptive separations of metal ions. Herein, MOFs based on highly stable Zr(IV) building units were systematically functionalized with targeted metal binding groups. Through competitive adsorption studies, it was shown that the selectivity for different metal ions was directly tunable through functional group chemistry.
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Affiliation(s)
- R Eric Sikma
- Nanoscale Sciences Department, Sandia National Laboratories, Albuquerque, NM 87185, USA.
| | - Boyoung Song
- Geochemistry Department, Sandia National Laboratories, Albuquerque, NM 87185, USA
| | - Jacob I Deneff
- Nanoscale Sciences Department, Sandia National Laboratories, Albuquerque, NM 87185, USA.
| | - Jacob Smith
- Geochemistry Department, Sandia National Laboratories, Albuquerque, NM 87185, USA
| | - Kadie Sanchez
- Geochemistry Department, Sandia National Laboratories, Albuquerque, NM 87185, USA
| | - Raphael A Reyes
- Nanoscale Sciences Department, Sandia National Laboratories, Albuquerque, NM 87185, USA.
| | - Luke M Lucero
- Nanoscale Sciences Department, Sandia National Laboratories, Albuquerque, NM 87185, USA.
| | - Keith J Fritzsching
- Organic Materials Science Department, Sandia National Laboratories, Albuquerque, NM 87185, USA
| | - Anastasia G Ilgen
- Geochemistry Department, Sandia National Laboratories, Albuquerque, NM 87185, USA
| | - Dorina F Sava Gallis
- Nanoscale Sciences Department, Sandia National Laboratories, Albuquerque, NM 87185, USA.
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Zhang X, Razanajatovo MR, Du X, Wang S, Feng L, Wan S, Chen N, Zhang Q. Well-designed protein amyloid nanofibrils composites as versatile and sustainable materials for aquatic environment remediation: A review. ECO-ENVIRONMENT & HEALTH (ONLINE) 2023; 2:264-277. [PMID: 38435357 PMCID: PMC10902511 DOI: 10.1016/j.eehl.2023.09.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2023] [Revised: 09/07/2023] [Accepted: 09/08/2023] [Indexed: 03/05/2024]
Abstract
Amyloid nanofibrils (ANFs) are supramolecular polymers originally classified as pathological markers in various human degenerative diseases. However, in recent years, ANFs have garnered greater interest and are regarded as nature-based sustainable biomaterials in environmental science, material engineering, and nanotechnology. On a laboratory scale, ANFs can be produced from food proteins via protein unfolding, misfolding, and hydrolysis. Furthermore, ANFs have specific structural characteristics such as a high aspect ratio, good rigidity, chemical stability, and a controllable sequence. These properties make them a promising functional material in water decontamination research. As a result, the fabrication and application of ANFs and their composites in water purification have recently gained considerable attention. Despite the large amount of literature in this field, there is a lack of systematic review to assess the gap in using ANFs and their composites to remove contaminants from water. This review discusses significant advancements in design techniques as well as the physicochemical properties of ANFs-based composites. We also emphasize the current progress in using ANFs-based composites to remove inorganic, organic, and biological contaminants. The interaction mechanisms between ANFs-based composites and contaminants are also highlighted. Finally, we illustrate the challenges and opportunities associated with the future preparation and application of ANFs-based composites. We anticipate that this review will shed new light on the future design and use of ANFs-based composites.
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Affiliation(s)
- Xiaolin Zhang
- Hebei Key Laboratory of Heavy Metal Deep-Remediation in Water and Resource Reuse and Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China
| | - Mamitiana Roger Razanajatovo
- Hebei Key Laboratory of Heavy Metal Deep-Remediation in Water and Resource Reuse and Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China
| | - Xuedong Du
- Hebei Key Laboratory of Heavy Metal Deep-Remediation in Water and Resource Reuse and Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China
| | - Shuo Wang
- Hebei Key Laboratory of Heavy Metal Deep-Remediation in Water and Resource Reuse and Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China
| | - Li Feng
- Hebei Key Laboratory of Heavy Metal Deep-Remediation in Water and Resource Reuse and Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China
| | - Shunli Wan
- College of Life & Environment Sciences, Huangshan University, Huangshan 245041, China
| | - Ningyi Chen
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, China
| | - Qingrui Zhang
- Hebei Key Laboratory of Heavy Metal Deep-Remediation in Water and Resource Reuse and Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China
- State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
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Ma J, Li Y, Wang CC, Wang P. Superior Removal of Vanadium(V) from Simulated Groundwater with a Fe-Based Metal-Organic Framework Immobilized on Cotton Fibers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:16863-16872. [PMID: 37963178 DOI: 10.1021/acs.langmuir.3c02411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2023]
Abstract
A suitable adsorbent is essential in the process of removing hazardous vanadium(V) from actual groundwater. In this work, MIL-88A(Fe)/cotton (MC) was employed to eliminate V(V) from simulated vanadium-contaminated groundwater. The findings demonstrated that MC exhibited an exceptional performance in removing V(V), displaying a maximum adsorption capacity of 218.71 mg g-1. MC exhibits great promise as an adsorbent for V(V) elimination in an extensive pH range spanning 3 to 11. Even in the presence of high levels of competing ions such as Cl-, NO3-, and SO42-, MC demonstrated remarkable specificity in adsorbing V(V). The results of column experiments and co-occurring ions influence tests indicate that MC is a potential candidate for effectively treating actual vanadium-contaminated groundwater. The effluent could meet the vanadium content restriction of 50 μg L-1 required in China's drinking water sources. Regeneration of MC can be performed easily without experiencing significant capacity loss. The results obtained from this research indicate the promising potential of MC in mitigating vanadium pollution.
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Affiliation(s)
- Jing Ma
- Beijing Key Laboratory of Functional Materials for Building Structure and Environment Remediation, School of Environment and Energy Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044, China
- Beijing Energy Conservation & Sustainable Urban and Rural Development Provincial and Ministry Co-construction Collaboration Innovation Center, Beijing University of Civil Engineering and Architecture, Beijing 100044, China
| | - Ya Li
- Beijing Key Laboratory of Functional Materials for Building Structure and Environment Remediation, School of Environment and Energy Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044, China
- Beijing Energy Conservation & Sustainable Urban and Rural Development Provincial and Ministry Co-construction Collaboration Innovation Center, Beijing University of Civil Engineering and Architecture, Beijing 100044, China
| | - Chong-Chen Wang
- Beijing Key Laboratory of Functional Materials for Building Structure and Environment Remediation, School of Environment and Energy Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044, China
- Beijing Energy Conservation & Sustainable Urban and Rural Development Provincial and Ministry Co-construction Collaboration Innovation Center, Beijing University of Civil Engineering and Architecture, Beijing 100044, China
| | - Peng Wang
- Beijing Key Laboratory of Functional Materials for Building Structure and Environment Remediation, School of Environment and Energy Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044, China
- Beijing Energy Conservation & Sustainable Urban and Rural Development Provincial and Ministry Co-construction Collaboration Innovation Center, Beijing University of Civil Engineering and Architecture, Beijing 100044, China
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Gao X, Ding R, Huang H, Liu B, Zhao X. Constructing a carboxyl-rich angstrom-level trap in a metal-organic framework for the selective capture of lithium. Chem Commun (Camb) 2023; 59:13183-13186. [PMID: 37850377 DOI: 10.1039/d3cc03913g] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2023]
Abstract
A metal-organic-framework-based ion trap was designed via tailoring linker functionality as well as free -COOH density. The mixed-linker UiO-66-H2/H4 exhibits higher adsorption for Li+ ions than H4-free UiO-66-H2 because the H4 linker provides an additional -COOH group in the local region.
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Affiliation(s)
- Xinxin Gao
- College of Chemical Engineering and Technology, Taiyuan University of Science and Technology, Taiyuan 030024, China.
| | - Rui Ding
- College of Chemical Engineering and Technology, Taiyuan University of Science and Technology, Taiyuan 030024, China.
| | - Hongliang Huang
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Chemical Engineering and Technology, Tiangong University, Tianjin 300387, China.
| | - Baosheng Liu
- College of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China.
| | - Xudong Zhao
- College of Chemical Engineering and Technology, Taiyuan University of Science and Technology, Taiyuan 030024, China.
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9
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Yu RL, Li QF, Li ZL, Wang XY, Xia LZ. Analysis of Radioactive Iodine Trapping Mechanism by Zinc-Based Metal-Organic Frameworks with Various N-Containing Carboxylate Ligands. ACS APPLIED MATERIALS & INTERFACES 2023; 15:35082-35091. [PMID: 37458304 DOI: 10.1021/acsami.3c07032] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/28/2023]
Abstract
This study aimed to develop effective adsorbents for capturing radioactive iodine in nuclear power waste gas. Two zinc metal-organic frameworks (Zn-MOFs) were synthesized and found to have favorable properties such as a large surface area, thermal stability, surface rich in π-electron-containing nitrogen, and redox potential. Adsorption experiments revealed maximum capacities of 1.25 and 1.96 g g-1 for the MOFs at 75 °C, with the pseudo-second-order kinetic model fitting the data well. The Langmuir equation provided a better fit in cyclohexane, with maximum adsorption amounts of 249 and 358 mg g-1 for Zn-MOF-1 and Zn-MOF-2, respectively. The MOFs were also stable during six cycles of adsorption and desorption. Furthermore, electron transfer occurred due to the synergistic adsorption of Zn, N, and O atoms, resulting in the conversion of some iodine to polyiodide. Zn-MOF-2 exhibited better chemisorption than Zn-MOF-1 due to a smaller highest occupied molecular orbital (HOMO)-lowest unoccupied molecular orbital (LUMO) gap. Notably, it was discovered that N-containing radicals had stronger interactions with iodine compared to radicals without N. These findings provide valuable insights into MOF synthesis and environmental protection.
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Affiliation(s)
- Rui-Li Yu
- Department of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Qian-Fan Li
- Department of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Zhen-Le Li
- Department of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Xiao-Yu Wang
- Department of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Liang-Zhi Xia
- Department of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
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10
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Rahman N, Ahmad I. Insights into the statistical physics modeling and fractal like kinetic approach for the adsorption of As(III) on coordination polymer gel based on zirconium(IV) and 2-thiobarbituric acid. JOURNAL OF HAZARDOUS MATERIALS 2023; 457:131783. [PMID: 37327609 DOI: 10.1016/j.jhazmat.2023.131783] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 05/13/2023] [Accepted: 06/03/2023] [Indexed: 06/18/2023]
Abstract
A novel coordination polymer gel based on zirconium(IV) and 2-thiobarbituric (ZrTBA) was synthesized and explored its potential to remediate As(III) from water. Box-Behnken design with desirability function and genetic algorithm yielded the optimized conditions (initial concentration=194 mg L-1, dosage = 42.2 mg, time= 95 min and pH = 4.9) for maximum removal efficiency (99.19 %). The experimental saturation capacity for As(III) was 178.30 mg g-1. The steric parameter n > 1 of the best fitted statistical physics model: monolayer with two energies (R2 = 0.987-0.992) suggested multimolecular mechanism with vertical orientation of As(III) molecules onto the two active sites. XPS and FTIR confirmed the two active sites being zirconium and oxygen. The adsorption energies (E1 = 35.81-37.63 kJ/mol; E2 = 29.50-36.49 kJ/mol) and isosteric heat of adsorption indicated that physical forces governed the As(III) uptake. DFT calculations implied that the weak electrostatic interaction and hydrogen bonding were involved. The best fitted (R2>0.99) fractal like pseudo first order model established energetic heterogeneity. ZrTBA showed excellent removal efficiency in the presence of potential interfering ions and could be used up to 5 cycles of adsorption-desorption with < 8 % loss in the efficiency. ZrTBA removed ≥96.06 % As(III) from real water samples spiked at different levels of As(III).
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Affiliation(s)
- Nafisur Rahman
- Department of Chemistry, Aligarh Muslim University, Aligarh 202002, India.
| | - Izhar Ahmad
- Department of Chemistry, Aligarh Muslim University, Aligarh 202002, India
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