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Liu Y, Wu Y, Zhou J, Li N, Zeng M, Ren X, Shao L, Chen J, Ying J, Zhang T, Xu W, Yang Z. Bio-inspired fabrication of chitosan/PEO/Ti 3C 2T x 2D MXene nanosheets supported palladium composite nanofiber catalysts via electrospinning. Int J Biol Macromol 2024; 279:135460. [PMID: 39260635 DOI: 10.1016/j.ijbiomac.2024.135460] [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: 07/04/2024] [Revised: 08/18/2024] [Accepted: 09/06/2024] [Indexed: 09/13/2024]
Abstract
In this study, novel chitosan/polyethylene oxide/Ti3C2Tx 2D MXene nanosheets (CS/PEO/Ti3C2Tx) nanofibers were successfully prepared by a continuous electrospinning process. During the electrospinning process, induced by the syringe tip capillary effects and electric field force, the Ti3C2Tx nanosheets were aligned along the direction of the nanofiber formation to occur a highly oriented structure. This well-ordered arrangement of the inorganic Ti3C2Tx nanosheets within the organic polymer matrix nanofiber was similar with nacre-like 'brick-and-motar' structure to some extent, resulting in a marked increase in thermal stability and mechanical properties of the resultant CS/PEO/Ti3C2Tx nanofiber. As 4 wt% of Ti3C2Tx nanosheets loaded, the highest tensile strength of the CS/PEO/Ti3C2Tx nanofiber mats was achieved as 31.7 MPa, about two times that of neat CS/PEO nanofibers. Uniformly dispersed Pd nanoparticles in size of about 1.6 nm have been successfully immobilized on the composite nanofiber with a solution impregnation process. With a loading as low as 0.2 mol% of Pd, the resultant Pd@CS/PEO/Ti3C2Tx composite nanofiber catalysts were highly active for both Heck and Sonogashira coupling reactions with broad reactants application scope, and could be recycled 15 runs without significant loss of activities.
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Affiliation(s)
- Yonghong Liu
- Research Center of Advanced Catalytic Materials & Functional Molecular Synthesis, Key Laboratory of Alternative Technologies for Fine Chemicals Process of Zhejiang Province, School of Chemistry & Chemical Engineering, Shaoxing University, Shaoxing 312000, China
| | - Yuanyuan Wu
- Research Center of Advanced Catalytic Materials & Functional Molecular Synthesis, Key Laboratory of Alternative Technologies for Fine Chemicals Process of Zhejiang Province, School of Chemistry & Chemical Engineering, Shaoxing University, Shaoxing 312000, China
| | - Jie Zhou
- Research Center of Advanced Catalytic Materials & Functional Molecular Synthesis, Key Laboratory of Alternative Technologies for Fine Chemicals Process of Zhejiang Province, School of Chemistry & Chemical Engineering, Shaoxing University, Shaoxing 312000, China
| | - Na Li
- Research Center of Advanced Catalytic Materials & Functional Molecular Synthesis, Key Laboratory of Alternative Technologies for Fine Chemicals Process of Zhejiang Province, School of Chemistry & Chemical Engineering, Shaoxing University, Shaoxing 312000, China
| | - Minfeng Zeng
- Research Center of Advanced Catalytic Materials & Functional Molecular Synthesis, Key Laboratory of Alternative Technologies for Fine Chemicals Process of Zhejiang Province, School of Chemistry & Chemical Engineering, Shaoxing University, Shaoxing 312000, China.
| | - Xiaorong Ren
- Research Center of Advanced Catalytic Materials & Functional Molecular Synthesis, Key Laboratory of Alternative Technologies for Fine Chemicals Process of Zhejiang Province, School of Chemistry & Chemical Engineering, Shaoxing University, Shaoxing 312000, China
| | - Linjun Shao
- Research Center of Advanced Catalytic Materials & Functional Molecular Synthesis, Key Laboratory of Alternative Technologies for Fine Chemicals Process of Zhejiang Province, School of Chemistry & Chemical Engineering, Shaoxing University, Shaoxing 312000, China
| | - Jinyang Chen
- Research Center of Advanced Catalytic Materials & Functional Molecular Synthesis, Key Laboratory of Alternative Technologies for Fine Chemicals Process of Zhejiang Province, School of Chemistry & Chemical Engineering, Shaoxing University, Shaoxing 312000, China
| | - Jiadi Ying
- Research Center of Advanced Catalytic Materials & Functional Molecular Synthesis, Key Laboratory of Alternative Technologies for Fine Chemicals Process of Zhejiang Province, School of Chemistry & Chemical Engineering, Shaoxing University, Shaoxing 312000, China; Key Laboratory of Hydrogen Energy Materials and Technology of Shaoxing, Shaoxing 312000, China.
| | - Tao Zhang
- Shaoxing Doctoral Innovation Station, Shaoxing Minsheng Pharmaceutical Co., Ltd., Shaoxing 312000, China
| | - Wei Xu
- Shaoxing Doctoral Innovation Station, Shaoxing Minsheng Pharmaceutical Co., Ltd., Shaoxing 312000, China
| | - Zhen Yang
- Research Center of Advanced Catalytic Materials & Functional Molecular Synthesis, Key Laboratory of Alternative Technologies for Fine Chemicals Process of Zhejiang Province, School of Chemistry & Chemical Engineering, Shaoxing University, Shaoxing 312000, China; Shaoxing Doctoral Innovation Station, Shaoxing Minsheng Pharmaceutical Co., Ltd., Shaoxing 312000, China.
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Hammad EN, Eltaweil AS, Abouelenein SA, El-Subruiti G. Enhanced Cr(VI) removal via CPBr-modified MIL-88A@amine-functionalized GO: synthesis, performance, and mechanism. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:47851-47865. [PMID: 39009817 DOI: 10.1007/s11356-024-33859-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Accepted: 05/27/2024] [Indexed: 07/17/2024]
Abstract
Water contamination by heavy metals, especially chromium (VI), poses a critical environmental issue due to its carcinogenic nature and persistence in the environment. Addressing this, the current study develops an efficient adsorbent, CPBr-MIL-88A@AmGO, which utilizes the synergistic capabilities of Cetylpyridinium bromide-modified MIL-88A and amine-functionalized graphene oxide to enhance Cr(VI) removal from aqueous solutions. The obtained results indicate that CPBr-MIL-88A@AmGO achieves its highest removal efficacy at pH 2, where the interaction of CPBr and AmGO's positively charged centers significantly contributes to the adsorption processes. According to the Langmuir isotherm model, the composite's adsorption capacity reached a maximum of 306.75 mg/g. The adsorption kinetics adhered to a pseudo-second-order model along with the endothermic nature of the process. Although the presence of SO42- ions significantly reduces adsorption capacity, other interfering ions including Na+, K+, Ca2+, Cl-, and NO3- only slightly affect it. Remarkably, the composite maintains high removal efficiency, over 82%, even after 7 recycling tests, underscoring its potential for practical applications in water treatment systems. The proposed mechanism involves the contribution of electrostatic attractions, ion exchange, complexation, and the reduction of Cr(VI) to Cr(III) in the removal process. This study not only offers a potent solution for Cr(VI) remediation but also contributes to sustainable water resource management.
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Affiliation(s)
- Eman N Hammad
- Department of Chemistry, Faculty of Science, Menoufia University, Shebin El-Kom, Egypt
| | - Abdelazeem S Eltaweil
- Department of Engineering, Faculty of Engineering and Technology, University of Technology and Applied Sciences, Sultanate of Oman, Ibra, Oman.
- Department of Chemistry, Faculty of Science, Alexandria University, Alexandria, Egypt.
| | - Saeyda A Abouelenein
- Department of Chemistry, Faculty of Science, Menoufia University, Shebin El-Kom, Egypt
| | - Gehan El-Subruiti
- Department of Chemistry, Faculty of Science, Alexandria University, Alexandria, Egypt
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TiO 2-Modified Montmorillonite-Supported Porous Carbon-Immobilized Pd Species Nanocomposite as an Efficient Catalyst for Sonogashira Reactions. Molecules 2023; 28:molecules28052399. [PMID: 36903644 PMCID: PMC10005427 DOI: 10.3390/molecules28052399] [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: 02/01/2023] [Revised: 02/26/2023] [Accepted: 03/02/2023] [Indexed: 03/08/2023] Open
Abstract
In this study, a combination of the porous carbon (PCN), montmorillonite (MMT), and TiO2 was synthesized into a composite immobilized Pd metal catalyst (TiO2-MMT/PCN@Pd) with effective synergism improvements in catalytic performance. The successful TiO2-pillaring modification for MMT, derivation of carbon from the biopolymer of chitosan, and immobilization of Pd species for the prepared TiO2-MMT/PCN@Pd0 nanocomposites were confirmed using a combined characterization with X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), N2 adsorption-desorption isotherms, high-resolution transition electron microscopy (HRTEM), X-ray photoelectron spectroscopy (XPS), and Raman spectroscopy. It was shown that the combination of PCN, MMT, and TiO2 as a composite support for the stabilization of the Pd catalysts could synergistically improve the adsorption and catalytic properties. The resultant TiO2-MMT80/PCN20@Pd0 showed a high surface area of 108.9 m2/g. Furthermore, it exhibited moderate to excellent activity (59-99% yield) and high stability (recyclable 19 times) in the liquid-solid catalytic reactions, such as the Sonogashira reactions of aryl halides (I, Br) with terminal alkynes in organic solutions. The positron annihilation lifetime spectroscopy (PALS) characterization sensitively detected the development of sub-nanoscale microdefects in the catalyst after long-term recycling service. This study provided direct evidence for the formation of some larger-sized microdefects during sequential recycling, which would act as leaching channels for loaded molecules, including active Pd species.
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Huang S, Yang S, Chen Y, Yang Z, Deng L, Wu Y, Zhang T, Feng R, Zeng M. Porous carbon supported Pd catalysts derived from gelatin‐based/chitosan or polyvinyl pyrrolidone/
PdCl
2
blends. J Appl Polym Sci 2022. [DOI: 10.1002/app.52163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Shuaijian Huang
- Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process College of Chemistry & Chemical Engineering, Shaoxing University Shaoxing China
| | - Shuai Yang
- Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process College of Chemistry & Chemical Engineering, Shaoxing University Shaoxing China
| | - Yuli Chen
- Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process College of Chemistry & Chemical Engineering, Shaoxing University Shaoxing China
| | - Zhen Yang
- Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process College of Chemistry & Chemical Engineering, Shaoxing University Shaoxing China
| | - Lu Deng
- Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process College of Chemistry & Chemical Engineering, Shaoxing University Shaoxing China
| | - Yuanyuan Wu
- Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process College of Chemistry & Chemical Engineering, Shaoxing University Shaoxing China
| | - Taojun Zhang
- Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process College of Chemistry & Chemical Engineering, Shaoxing University Shaoxing China
| | - Ruokun Feng
- Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process College of Chemistry & Chemical Engineering, Shaoxing University Shaoxing China
| | - Minfeng Zeng
- Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process College of Chemistry & Chemical Engineering, Shaoxing University Shaoxing China
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Dohendou M, Pakzad K, Nezafat Z, Nasrollahzadeh M, Dekamin MG. Progresses in chitin, chitosan, starch, cellulose, pectin, alginate, gelatin and gum based (nano)catalysts for the Heck coupling reactions: A review. Int J Biol Macromol 2021; 192:771-819. [PMID: 34634337 DOI: 10.1016/j.ijbiomac.2021.09.162] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 09/11/2021] [Accepted: 09/18/2021] [Indexed: 12/15/2022]
Abstract
Heck cross-coupling reaction (HCR) is one of the few transition metal catalyzed CC bond-forming reactions, which has been considered as the most effective, direct, and atom economical synthetic method using various catalytic systems. Heck reaction is widely employed in numerous syntheses including preparation of pharmaceutical and biologically active compounds, agrochemicals, natural products, fine chemicals, etc. Commonly, Pd-based catalysts have been used in HCR. In recent decades, the application of biopolymers as natural and effective supports has received attention due to their being cost effective, abundance, and non-toxicity. In fact, recent studies demonstrated that biopolymer-based catalysts had high sorption capacities, chelating activities, versatility, and stability, which make them potentially applicable as green materials (supports) in HCR. These catalytic systems present high stability and recyclability after several cycles of reaction. This review aims at providing an overview of the current progresses made towards the application of various polysaccharide and gelatin-supported metal catalysts in HCR in recent years. Natural polymers such as starch, gum, pectin, chitin, chitosan, cellulose, alginate and gelatin have been used as natural supports for metal-based catalysts in HCR. Diverse aspects of the reactions, different methods of preparation and application of polysaccharide and gelatin-based catalysts and their reusability have been reviewed.
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Affiliation(s)
- Mohammad Dohendou
- Department of Chemistry, Iran University of Science and Technology, Tehran 16846-13114, Iran
| | - Khatereh Pakzad
- Department of Chemistry, Faculty of Science, University of Qom, PO Box 37185-359, Qom, Iran
| | - Zahra Nezafat
- Department of Chemistry, Faculty of Science, University of Qom, PO Box 37185-359, Qom, Iran
| | - Mahmoud Nasrollahzadeh
- Department of Chemistry, Faculty of Science, University of Qom, PO Box 37185-359, Qom, Iran.
| | - Mohammad G Dekamin
- Department of Chemistry, Iran University of Science and Technology, Tehran 16846-13114, Iran
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