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Mondal H, Karmakar M, Datta B. Ligand-selective turn-off sensing, harvesting and post-adsorptive use of Dy(III) and Yb(III) by intrinsically fluorescent flower-shaped Gum Acacia-grafted hydrogels. Sci Rep 2024; 14:18373. [PMID: 39112525 PMCID: PMC11306756 DOI: 10.1038/s41598-024-65932-2] [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: 04/07/2024] [Accepted: 06/25/2024] [Indexed: 08/10/2024] Open
Abstract
Rare earth metals (REMs), such as Dysprosium (Dy) and Ytterbium (Yb), have experienced unprecedented demand in recent times due to their applications in high-end technologies. REMs are found only in select geographic locations placing tremendous economic constraints on their use. In this work, we have developed Gum Acacia-grafted hydrogels (GmAc-FluoroTerPs) that are capable of selective detection and capture of Dy and Yb. The intrinsically blue fluorescent polymer hydrogel GmAc-FluoroTerP has been optimized for Dy(III) and Yb(III) specific quenching, enabling limit of detection of the REMs at 0.13 nM and 60.8 pM, respectively. A comprehensive structural characterization of the fluorescent hydrogel has been performed via NMR, FTIR, XPS, EPR, TGA, XRD, TEM, SEM, EDX, TCSPC, and DLS. In addition to an in situ generated fluorophore, GmAc-FluoroTerP displays a distinctive aggregation induced emission enhancement in mixed solvents. The complexation of Dy(III)/Yb(III) with GmAc-FluoroTerP hydrogel has been characterized by XPS, TCSPC, and logic gate analyses, and the adsorptive capacity for Dy(III) and Yb(III) are found to be best reported till date as 125.57 mg g-1 and 102.27 mg g-1, respectively. Desorption at acidic pH allows recovery of the REMs. We also report semiconducting behaviour of the native fluorescent hydrogel, that is enhanced upon adsorptive capture of Dy(III) and Yb(III), with calculated band gaps at 1.37, 0.77, and 0.49 eV, respectively. The convergent sensing, capture, and reuse of Dy(III) and Yb(III) presented in this work promises a hitherto unreported template for application on other REMs.
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Affiliation(s)
- Himarati Mondal
- Department of Chemistry, Indian Institute of Technology Gandhinagar, Palaj, Gujarat, 382055, India.
| | - Mrinmoy Karmakar
- Department of Chemistry, Indian Institute of Technology Gandhinagar, Palaj, Gujarat, 382055, India
- Department of Pharmacy, College of Pharmacy, Kangwon National University, Chuncheon, Gangwon, 24341, Republic of Korea
| | - Bhaskar Datta
- Department of Chemistry, Indian Institute of Technology Gandhinagar, Palaj, Gujarat, 382055, India.
- Department of Biological Engineering, Indian Institute of Technology Gandhinagar, Palaj, Gujarat, 382055, India.
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Wang X, Wang W, Wang W, Dong L, Zhai T, Gao Z, Wang K, Wang W, Wang S, Kong F. Enhanced effect and mechanism of nano Fe-Ca bimetallic oxide modified substrate on Cu(II) and Ni(II) removal in constructed wetland. JOURNAL OF HAZARDOUS MATERIALS 2023; 456:131689. [PMID: 37245372 DOI: 10.1016/j.jhazmat.2023.131689] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 04/24/2023] [Accepted: 05/22/2023] [Indexed: 05/30/2023]
Abstract
In this study, Fe2O3 nanoparticles (Fe2O3 NPs) and CaO NPs were loaded on the zeolite sphere carrier to create nano Fe-Ca bimetallic oxide (Fe-Ca-NBMO) modified substrate, which was introduced into constructed wetland (CW) to remove Cu(II) and Ni(II) via constructing "substrate-microorganism" system. Adsorption experiments showed that the equilibrium adsorption capacities of Fe-Ca-NBMO modified substrate for Cu(II) and Ni(II) were respectively 706.48 and 410.59 mg/kg at an initial concentration of 20 mg/L, 2.45 and 2.39 times of gravel. The Cu(II) and Ni(II) removal efficiencies in CW with Fe-Ca-NBMO modified substrate respectively reached 99.7% and 99.9% at an influent concentration of 100 mg/L, significantly higher than those in gravel-based CW (47.0% and 34.3%). Fe-Ca-NBMO modified substrate could promote Cu(II) and Ni(II) removal by increasing electrostatic adsorption, chemical precipitation, as well as the abundances of resistant microorganisms (Geobacter, Desulfuromonas, Zoogloea, Dechloromonas, and Desulfobacter) and functional genes (copA, cusABC, ABC.CD.P, gshB, and exbB). This study provided an effective method to enhance Cu(II) and Ni(II) removal of electroplating wastewater by CW with Fe-Ca-NBMO modified substrate.
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Affiliation(s)
- Xiaoyan Wang
- College of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China
| | - Wenyue Wang
- College of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China
| | - Wenpeng Wang
- College of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China
| | - Liu Dong
- College of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China
| | - Tianyu Zhai
- College of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China
| | - Zijing Gao
- College of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China
| | - Kang Wang
- College of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China
| | - Wenshu Wang
- College of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China
| | - Sen Wang
- College of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China.
| | - Fanlong Kong
- College of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China.
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Tian X, Hao Z, Wang C, Dong J, Wang L, Ma L, Gao Y, Han ZG, Zhang R. Preparation of paramagnetic ferroferric oxide-calcined layered double hydroxide core-shell adsorbent for selective removal of anionic pollutants. J Colloid Interface Sci 2023; 645:319-328. [PMID: 37150005 DOI: 10.1016/j.jcis.2023.04.151] [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: 03/06/2023] [Revised: 04/20/2023] [Accepted: 04/27/2023] [Indexed: 05/09/2023]
Abstract
Adsorption is one of the most common methods of pollution treatment. The selectivity for pollutants and recyclability of adsorbents are crucial to reduce the treatment cost. Layered double hydroxide (LDH) materials are one type of adsorbent with poor recyclability. Prussian blue (PB) is a sturdy and inexpensive metal-organic framework material that can be used as the precursor for synthesizing paramagnetic ferroferric oxide (Fe3O4). It is intriguing to build some reusable adsorbents with magnetic separation by integrating LDH and PB. In this work, paramagnetic Fe3O4-calcined LDH (Fe3O4@cLDH) core-shell adsorbent was designed and prepared by the calcination of PB-ZnAl layered double hydroxide (PB@LDH) core-shell precursor, which exhibits high anionic dyes selectivity in wastewater solutions. The paramagnetism and adsorption capability of Fe3O4@cLDH come from the Fe3O4 core and calcined ZnAl-LDH shell, respectively. Fe3O4@cLDH shows an adsorption capacity of 230 mg g-1 for acid orange and a high selectivity for anionic dyes in cation-anion mixed dye solutions. The regeneration process indicates that the high selectivity for anions is related to the specific hydration recovery process of ZnAl-LDH. The synergistic effect of the paramagnetic Fe3O4 core and calcined ZnAl-LDH shell makes Fe3O4@cLDH an excellent magnetic separation adsorbent with high selectivity to anions.
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Affiliation(s)
- Xinru Tian
- Hebei Key Laboratory of Organic Functional Molecules, College of Chemistry and Materials Science, Hebei Normal University, Shijiazhuang, Hebei 050024, China
| | - Zewei Hao
- Hebei Key Laboratory of Organic Functional Molecules, College of Chemistry and Materials Science, Hebei Normal University, Shijiazhuang, Hebei 050024, China
| | - Can Wang
- Hebei Key Laboratory of Organic Functional Molecules, College of Chemistry and Materials Science, Hebei Normal University, Shijiazhuang, Hebei 050024, China
| | - Jianghong Dong
- Hebei Key Laboratory of Organic Functional Molecules, College of Chemistry and Materials Science, Hebei Normal University, Shijiazhuang, Hebei 050024, China
| | - Lina Wang
- Hebei Key Laboratory of Organic Functional Molecules, College of Chemistry and Materials Science, Hebei Normal University, Shijiazhuang, Hebei 050024, China
| | - Li Ma
- Hebei Key Laboratory of Organic Functional Molecules, College of Chemistry and Materials Science, Hebei Normal University, Shijiazhuang, Hebei 050024, China
| | - Yuanzhe Gao
- Hebei Key Laboratory of Organic Functional Molecules, College of Chemistry and Materials Science, Hebei Normal University, Shijiazhuang, Hebei 050024, China
| | - Zhan-Gang Han
- Hebei Key Laboratory of Organic Functional Molecules, College of Chemistry and Materials Science, Hebei Normal University, Shijiazhuang, Hebei 050024, China
| | - Ruikang Zhang
- Hebei Key Laboratory of Organic Functional Molecules, College of Chemistry and Materials Science, Hebei Normal University, Shijiazhuang, Hebei 050024, China.
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Zhang Y, Guo W, Liu D, Ding Y. Tuning the Dual Active Sites of Functionalized UiO-66 for Selective Adsorption of Yb(III). ACS APPLIED MATERIALS & INTERFACES 2023; 15:17233-17244. [PMID: 36962007 DOI: 10.1021/acsami.3c00938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The recovery of rare earth elements (REEs) from discharged electronic devices or mineral waste water is highly essential but still facing challenges. In this work, two amino-functionalized carboxyl-UiO-66 (UiO-66-COOH-TETA and UiO-66-(COOH)2-ED) prepared via the postmodification method were employed as the adsorbents for Yb(III) capture. The experimental results revealed their superior adsorption capacities of 161.5 and 202.6 mg/g, respectively. Meanwhile, their adsorption processes can be described by the pseudo-second-order kinetic model and Langmuir model. Effects of initial pH and temperature on adsorptions were systematically evaluated, affording an optimal operating condition (i.e., pH of 5.5-6, T of 65 °C, t of 10 h). Moreover, the fabricated materials exhibited great reusability after five adsorption-regeneration cycles. UiO-66-COOH-TETA demonstrated good separation selectivity for Yb(III) over light REEs (i.e., 3.98 of Yb/Ce, 3.51 of Yb/Nd). Based on the density functional theory calculations and characterization analysis (XPS, Zeta, mapping, and IR), the adsorption mechanisms were mainly attributed to significant electrostatic attraction and strong surface complexation between N and O sites and Yb(III).
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Affiliation(s)
- Yi Zhang
- Key Laboratory of Green Chemical Process of Ministry of Education, School of Chemical Engineering and Pharmacy, Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education, Hubei Key Laboratory for Novel Reactor and Green Chemical Technology, Wuhan Institute of Technology, Wuhan 430073, China
| | - Weidong Guo
- Key Laboratory of Green Chemical Process of Ministry of Education, School of Chemical Engineering and Pharmacy, Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education, Hubei Key Laboratory for Novel Reactor and Green Chemical Technology, Wuhan Institute of Technology, Wuhan 430073, China
| | - Donghao Liu
- Key Laboratory of Green Chemical Process of Ministry of Education, School of Chemical Engineering and Pharmacy, Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education, Hubei Key Laboratory for Novel Reactor and Green Chemical Technology, Wuhan Institute of Technology, Wuhan 430073, China
| | - Yigang Ding
- Key Laboratory of Green Chemical Process of Ministry of Education, School of Chemical Engineering and Pharmacy, Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education, Hubei Key Laboratory for Novel Reactor and Green Chemical Technology, Wuhan Institute of Technology, Wuhan 430073, China
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Zhang Y, Liu D, Guo W, Ding Y. Less-precious nitrogen-rich covalent organic frameworks capable of effective rare earth recovery from water. J Mol Liq 2023. [DOI: 10.1016/j.molliq.2023.121229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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