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Mohammadbagheri Z, Rahmati A, Saeedi S, Movahedi B. Bio-based nanocomposite hydrogels derived from poly (glycerol tartrate) and cellulose: Thermally stable and green adsorbents for efficient adsorption of heavy metals. CHEMOSPHERE 2024; 349:140956. [PMID: 38104732 DOI: 10.1016/j.chemosphere.2023.140956] [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: 07/31/2023] [Revised: 11/29/2023] [Accepted: 11/30/2023] [Indexed: 12/19/2023]
Abstract
The eco-friendly polymeric nanocomposite hydrogels were prepared by incorporating dendritic fibrous nanosilica (DFNS) and apple peel (AP) as reinforcements into the crosslinked polymer produced by cellulose (CL) and poly (glycerol tartrate) (TAGL) via gelation method and used for efficient adsorption of Pb2+, Co2+, Ni2+, and Cu2+ metal ions. DFNS and DFNS/TAGL-CL/AP samples were characterized by FESEM, FTIR, TEM, TGA, and nitrogen adsorption/desorption methods. The results of TGA analysis showed that the thermal stability of the prepared hydrogels improved significantly in the presence of DFNS. Both synthetic and environmental parameters were investigated and the adsorption capacity reached 560.2 (pH = 4) and 473.12 (pH = 5) mg/g for Pb2+ and Cu2+ respectively, using initial ion concentration of 200 mg/L. Also, the maximum adsorption capacity was 340.9, and 350.3 mg/g for Co2+ and Ni2+, respectively under optimum conditions (pH = 6, initial ion concentration of 100 mg/L). These experiments indicated that the DFNS/TAGL-CL/AP nanocomposite hydrogel has an excellent performance in removal of Pb2+ and can adsorb this toxic metal in only 30 min while the optimum contact time for other metals was 60 min. Pseudo-second-order and Langmuir models were used to define the kinetic and adsorption isotherms, respectively and thermodynamic studies demonstrated that the adsorption was endothermic for Co2+, Ni2+ and Cu2+, exothermic for Pb2+, and spontaneous in nature for all metal ions. Furthermore, the reusability tests indicated that the hydrogels could maintain up to 93% of their initial adsorption capacity for all metal ions after four cycles. Therefore, the prepared nanocomposite hydrogels can be suggested as efficient adsorbents to remove the toxic metals from wastewater.
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Affiliation(s)
- Zahra Mohammadbagheri
- Department of Chemistry, University of Isfahan, P. O. Box, 81746-734 41, Isfahan, Iran.
| | - Abbas Rahmati
- Department of Chemistry, University of Isfahan, P. O. Box, 81746-734 41, Isfahan, Iran.
| | - Shaghayegh Saeedi
- Department of Chemistry, University of Isfahan, P. O. Box, 81746-734 41, Isfahan, Iran
| | - Behrooz Movahedi
- Department of Nanotechnology, Faculty of Chemistry, University of Isfahan, Isfahan, 81746-73441, Iran.
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Vibhute AM, Sureshan KM. How Far Are We in Combating Marine Oil Spills by Using Phase-Selective Organogelators? CHEMSUSCHEM 2020; 13:5343-5360. [PMID: 32808717 DOI: 10.1002/cssc.202001285] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 08/17/2020] [Indexed: 06/11/2023]
Abstract
Marine oil spills is one of the frequent natural disasters that adversely affect the economy and ecosystem. A variety of methods have been developed to combat marine oil spills. However, none of these methods is ideal and universal for tackling different kinds of oil spills. In addition, most of these methods do not offer the possibility for recovering the spilt oil. There is great interest in developing novel and better methods for combating marine oil spills that allow recovery of the spilt oil. The use of low molecular weight organogelators that can selectively congeal oil from oil-water mixtures have been proposed to be useful for oil spill recovery. From this initial proposal, the area has progressed gradually towards their practical implementation. The advancements and novel concepts in this area are reviewed.
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Affiliation(s)
- Amol M Vibhute
- School of Chemistry, Indian Institute of Science Education and Research, Thiruvananthapuram, Kerala, 695551, India
| | - Kana M Sureshan
- School of Chemistry, Indian Institute of Science Education and Research, Thiruvananthapuram, Kerala, 695551, India
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Panja S, Hanson S, Wang C. EDTA-Inspired Polydentate Hydrogels with Exceptionally High Heavy Metal Adsorption Capacity as Reusable Adsorbents for Wastewater Purification. ACS APPLIED MATERIALS & INTERFACES 2020; 12:25276-25285. [PMID: 32383581 DOI: 10.1021/acsami.0c03689] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Water pollution by heavy metal ions is a critical threat to public health. To remove the heavy metal pollutants from large waterbodies, we have synthesized a biocompatible, cost-effective, metal ion non-specific, and ethylenediaminetetraacetic acid (EDTA)-inspired polydentate hydrogel with exceptionally high adsorption capacity and reusability. The hydrogel was synthesized by the transamidation reaction between hydrolyzed polyacrylamide and branched polyethylenimine (BPEI). The mechanical strength of the synthesized hydrogel displayed an increasing trend with the wt % of the cross-linker (BPEI) and achieved a maximum storage modulus (Gmax') of 1093 Pa. Scanning electron microscopy revealed a porous network structure of the hydrogel (pore size: 30-70 μm), resulting in a very high swelling ratio of 5800%. The porous hydrogel manifested the maximum adsorption capacity of 482.2 mg/g when adsorbing from a mixture of metal ions (Cr3+, Cu2+, Zn2+, Cd2+, Hg2+, and Pb2+), higher than any EDTA-grafted material known to date. The high adsorption capacity of the hydrogel was attributed to the existence of numerous EDTA-mimicking coordinating functional groups, as confirmed by X-ray photoelectron spectroscopy. In addition, the hydrogel showed the self-healing property and preserved more than 85% adsorption efficiency even after five cycles of reuse. Furthermore, the hydrogels showed no or moderate toxicity toward mammalian cells.
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Affiliation(s)
- Sudipta Panja
- Department of Biomedical Engineering, University of Minnesota, Minneapolis, Minnesota 55455, United States
- McKetta Department of Chemical Engineering, University of Texas at Austin, Austin, Texas 78712, United States
| | - Samuel Hanson
- Department of Biomedical Engineering, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Chun Wang
- Department of Biomedical Engineering, University of Minnesota, Minneapolis, Minnesota 55455, United States
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Zhang B, Chen S, Luo H, Zhang B, Wang F, Song J. Porous amorphous powder form phase-selective organogelator for rapid recovery of leaked aromatics and spilled oils. JOURNAL OF HAZARDOUS MATERIALS 2020; 384:121460. [PMID: 31690502 DOI: 10.1016/j.jhazmat.2019.121460] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 10/10/2019] [Accepted: 10/10/2019] [Indexed: 05/22/2023]
Abstract
Phase-selective organogelators (PSOGs) have drawn wide attention due to their potential applications in recovery of leaked aromatics and spilled oils. However, powder form PSOGs with fast gelling abilities and broad applicabilities are still limited. Herein, we developed three D-gluconic acetal-based gelators with different alkyl chains, all of which show excellent gel properties for hydrocarbon solvents. The spectroscopic and X-ray results revealed that the gel formation was the synergy of hydrogen bonding, π-π stacking and van der Waals forces. Surprisingly, the powder form gelator A with a cis double bond in the alkyl chain could instantly and selectively gel aromatic hydrocarbons, and also rapidly solidify crude oils with widely ranging viscosities from seawater at room temperature within minutes. Further research revealed that A powder exhibited porous amorphous morphology because the cis double bonds broke the crystalline chain-chain interdigitation between the assemblies. Therefore, the fast dispersion and recombination of fibers under the action of oil molecules lead to the fast room temperature gel process. Overall, a non-toxic and low-cost powder form PSOG with rapid room temperature phase selective gelation ability for a wide range of oils makes it promising for the emergency treatment of oil spill and aromatics leakage.
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Affiliation(s)
- Baohao Zhang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China; Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China
| | - Shipeng Chen
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China; Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China
| | - Hao Luo
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China; Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China
| | - Bao Zhang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China.
| | - Fumin Wang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China.
| | - Jian Song
- School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China; Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China.
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Prathap A, Sureshan KM. Sugar-Based Organogelators for Various Applications. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:6005-6014. [PMID: 30983352 DOI: 10.1021/acs.langmuir.9b00506] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In this Feature Article, we discuss the design strategy, syntheses, and the self-assembly of various sugar-based gelators to form organogels. We illustrate the use of organogels formed by these sugar-based gelators for various applications such as (a) development of scratch-free, shatter-free, soft-optical devices using oil gels formed by mannitol-based gelators, (b) marine oil-spill recovery using sugar-based phase selective organogelators, (c) preparation of semiconducting cotton cloths using a diyne functionalized sugar gelator, (d) development of sugar arrays on glass slides using a polymerizable diyne functionalized sugar gelator for efficient lectin binding, (e) development of sintering resistant hybrid CaO-silica material for the absorption of CO2, (f) preparation of porous polystyrene-crown ether matrix for the selective alkali metal ions sequestration, and (g) preparation of porous polystyrene, structured silica, and fluorescent gels using a library of sugar-based gelators, and also the mechanism of gelation of some of these gelators have been discussed. We have also given our perspective toward exploring sugar-based gelators for advanced applications.
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Affiliation(s)
- Annamalai Prathap
- School of Chemistry , Indian Institute of Science Education and Research Thiruvananthapuram , Maruthamala (P.O.), Vithura , Kerala 695551 , India
| | - Kana M Sureshan
- School of Chemistry , Indian Institute of Science Education and Research Thiruvananthapuram , Maruthamala (P.O.), Vithura , Kerala 695551 , India
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Fu HG, Chen Y, Liu Y. Multistimuli-Responsive and Photocontrolled Supramolecular Luminescent Gels Constructed by Anthracene-Bridged Bis(dibenzo-24-crown-8) with Secondary Ammonium Salt Polymer. ACS APPLIED MATERIALS & INTERFACES 2019; 11:16117-16122. [PMID: 30983331 DOI: 10.1021/acsami.9b04323] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
A novel multistimuli-responsive and photcontrolled supramolecular luminescent gel is fabricated from anthracene-bridged bis(dibenzo-24-crown-8) (1) and secondary ammonium salt-functionalized graft polymer (3). X-ray crystallographic analysis reveals that the dibenzo-24-crown-8 (DB24C8) ring is located at the opposite site of 1, which will greatly hinder the mutual intermolecular π-π stacking between anthracene groups. By taking advantage of the controllable binding of 1 with 3, the unique gel-sol transition could occur under different temperatures, pH, and competitive guest bindings. Benefiting from the photo-oxygenation of anthracene, the luminescence behavior of the supramolecular gel could be switched off and on under UV light (365 nm) and heating treatment, which provides a new approach for constructing photocontrolled supramolecular luminescent gel.
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Affiliation(s)
- Hong-Guang Fu
- College of Chemistry, State Key Laboratory of Elemento-Organic Chemistry , Nankai University , Tianjin 300071 , P. R. China
| | - Yong Chen
- College of Chemistry, State Key Laboratory of Elemento-Organic Chemistry , Nankai University , Tianjin 300071 , P. R. China
| | - Yu Liu
- College of Chemistry, State Key Laboratory of Elemento-Organic Chemistry , Nankai University , Tianjin 300071 , P. R. China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) , Tianjin 300072 , P. R. China
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Prathap A, Ravi A, Pathan JR, Sureshan KM. Halobenzyl alcohols as structurally simple organogelators. CrystEngComm 2019. [DOI: 10.1039/c9ce01008d] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
We report 11 simple halobenzyl alcohols, each comprising of only 16 atoms, as organogelators for aliphatic hydrocarbon solvents. Their self-assembly is similar in both gel and crystal states and involve OH⋯O, CH⋯O, CH⋯π, O⋯X, CH⋯X and X⋯X interactions.
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Affiliation(s)
- Annamalai Prathap
- School of Chemistry
- Indian Institute of Science Education and Research Thiruvananthapuram
- Vithura
- India
| | - Arthi Ravi
- School of Chemistry
- Indian Institute of Science Education and Research Thiruvananthapuram
- Vithura
- India
| | - Javed R. Pathan
- School of Chemistry
- Indian Institute of Science Education and Research Thiruvananthapuram
- Vithura
- India
| | - Kana M. Sureshan
- School of Chemistry
- Indian Institute of Science Education and Research Thiruvananthapuram
- Vithura
- India
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