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Purohit S, Oswal P, Bahuguna A, Tyagi A, Bhatt N, Kumar A. Catalytic system having an organotellurium ligand on graphene oxide: immobilization of Pd(0) nanoparticles and application in heterogeneous catalysis of cross-coupling reactions. RSC Adv 2024; 14:27092-27109. [PMID: 39193294 PMCID: PMC11348857 DOI: 10.1039/d4ra03401e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2024] [Accepted: 08/20/2024] [Indexed: 08/29/2024] Open
Abstract
First heterogeneous catalytic system, having a covalently linked hybrid bidentate organotellurium ligand [i.e., PhTe-CH2-CH2-NH2] on the surface of graphene oxide, has been synthesized with immobilized and stabilized Pd(0) nanoparticles. To the best of our knowledge, it is the first such catalytic system in which a heterogenized organotellurium ligand has been used. It has been well-characterized using different physicochemical characterization techniques viz. P-XRD, XPS, HR-TEM, EELS, FE-SEM, EDX, TGA, BET surface area analysis, FT-IR spectroscopy, and Raman spectroscopy. The Pd content of the final system has been quantified using ICP-OES. Its applications have been explored in Suzuki-Miyaura C-C cross coupling and C-O cross coupling reactions. Hot filtration experiments corroborate the heterogeneous nature of the catalysis. It is recyclable for up to five reaction cycles in Suzuki-Miyaura and C-O cross coupling with marginal loss in performance. It also catalyzes the reactions of chloroarenes such as chlorobenzene, 4-chloroaniline, 1-chloro-4-nitrobenzene, 4-chloroacetophenone, 4-chlorobenzophenone for Suzuki coupling, and 1-chloro-4-nitrobenzene, 4-chlorobenzonitrile, chlorobenzene, and 4-chlorotoluene for C-O coupling. P-XRD, FE-SEM, and EDX study reveals that the catalytic system retains its structural originality and functionality after recycling.
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Affiliation(s)
- Suraj Purohit
- Department of Chemistry, School of Physical Sciences, Doon University Dehradun-248001 India
| | - Preeti Oswal
- Department of Chemistry, School of Physical Sciences, Doon University Dehradun-248001 India
| | - Anurag Bahuguna
- Department of Chemistry, School of Physical Sciences, Doon University Dehradun-248001 India
| | - Anupma Tyagi
- Department of Chemistry, School of Physical Sciences, Doon University Dehradun-248001 India
| | - Neeraj Bhatt
- Department of Chemistry, School of Physical Sciences, Doon University Dehradun-248001 India
| | - Arun Kumar
- Department of Chemistry, School of Physical Sciences, Doon University Dehradun-248001 India
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2
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Liang F, Liu C, Geng J, Chen N, Lai W, Mo H, Liu K. Chitosan-fucoidan encapsulating cinnamaldehyde composite coating films: Preparation, pH-responsive release, antibacterial activity and preservation for litchi. Carbohydr Polym 2024; 333:121968. [PMID: 38494223 DOI: 10.1016/j.carbpol.2024.121968] [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: 11/18/2023] [Revised: 02/16/2024] [Accepted: 02/17/2024] [Indexed: 03/19/2024]
Abstract
In this study, an edible composite film with pH-responsive release was prepared by the formation of Schiff-base imine bonds between chitosan (CS) and oxidized fucoidan (CS-FU) and encapsulating cinnamaldehyde (CA). Fourier-transform infrared, 1H nuclear magnetic resonance, X-ray photoelectron spectroscopy and gel permeation chromatography confirmed the formation of CS-FU. The result showed that, oxidation degree of FU, degrees of substitution, average molecular weight and yield of CS-FU were 25.57 %, 10.48 %, 23.3094 kDa and 45.63 ± 0.64 %, respectively. Scanning electron microscopy revealed that CA was encapsulated within the CS-FU matrix. Increasing the CA content could improve the mechanical properties and ultraviolet and visible-light resistances of the CS-FU coating films but enhance their water vapor permeabilities. The release of CA increased as the pH decreased, and the antibacterial rate at pH 5 was 2.3-fold higher than that at pH 7, indicating good pH-responsive release and antibacterial properties in mildly acidic environments. Owing to their excellent properties, the CA/CS-FU-0.1 coating films maintained the appearance and quality indices of litchis for at least eight days. Hence, multifunctional composite coating films are prospective eco-friendly and intelligently responsive controlled-release packaging materials for fruit preservation.
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Affiliation(s)
- Fengyan Liang
- Life Science and Technology School, Lingnan Normal University, Zhanjiang 524048, China.
| | - Chusi Liu
- Life Science and Technology School, Lingnan Normal University, Zhanjiang 524048, China
| | - Jinwen Geng
- Life Science and Technology School, Lingnan Normal University, Zhanjiang 524048, China; School of Life Sciences, South China Normal University, Guangzhou 510631, China
| | - Nachuan Chen
- Life Science and Technology School, Lingnan Normal University, Zhanjiang 524048, China
| | - Weida Lai
- Life Science and Technology School, Lingnan Normal University, Zhanjiang 524048, China
| | - Haitong Mo
- Life Science and Technology School, Lingnan Normal University, Zhanjiang 524048, China
| | - Kaidong Liu
- Life Science and Technology School, Lingnan Normal University, Zhanjiang 524048, China.
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3
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Dai X, Li Y, Liu X, Zhang Y, Gao F. Intracellular infection-responsive macrophage-targeted nanoparticles for synergistic antibiotic immunotherapy of bacterial infection. J Mater Chem B 2024; 12:5248-5260. [PMID: 38712662 DOI: 10.1039/d4tb00409d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/08/2024]
Abstract
Intracellular bacteria are considered to play a key role in the failure of bacterial infection therapy and increase of antibiotic resistance. Nanotechnology-based drug delivery carriers have been receiving increasing attention for improving the intracellular antibacterial activity of antibiotics, but are accompanied by disadvantages such as complex preparation procedures, lack of active targeting, and monotherapy, necessitating further design improvements. Herein, nanoparticles targeting bacteria-infected macrophages are fabricated to eliminate intracellular bacterial infections via antibiotic release and upregulation of intracellular reactive oxygen species (ROS) levels and proinflammatory responses. These nanoparticles were formed through the reaction of the amino group on selenocystamine dihydrochloride and the aldehyde group on oxidized dextran (ox-Dex), which encapsulates vancomycin (Van) through hydrophobic interactions. These nanoparticles could undergo targeted uptake by macrophages via endocytosis and respond to the bacteria-infected intracellular microenvironment (ROS and glutathione (GSH)) for controlled release of antibiotics. Furthermore, these nanoparticles could consume intracellular GSH and promote a significant increase in the level of ROS in macrophages, subsequently up-regulating the proinflammatory response to reinforce antibacterial activity. These nanoparticles can accelerate bacteria-infected wound healing. In this work, nanoparticles were fabricated for bacteria-infected macrophage-targeted and microenvironment-responsive antibiotic delivery, cellular ROS generation, and proinflammatory up-regulation activity to eliminate intracellular bacteria, which opens up a new possibility for multifunctional drug delivery against intracellular infection.
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Affiliation(s)
- Xiaomei Dai
- Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Province Key Laboratory of Biomedical Materials and Chemical Measurement, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, P. R. China.
| | - Yu Li
- Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Province Key Laboratory of Biomedical Materials and Chemical Measurement, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, P. R. China.
| | - Xiaojun Liu
- Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Province Key Laboratory of Biomedical Materials and Chemical Measurement, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, P. R. China.
| | - Yongjie Zhang
- Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Province Key Laboratory of Biomedical Materials and Chemical Measurement, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, P. R. China.
| | - Feng Gao
- Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Province Key Laboratory of Biomedical Materials and Chemical Measurement, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, P. R. China.
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4
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Abd-Elsabour M, Abou-Krisha M, Alhamzani AG, Alotaibi AN, Yousef TA. Voltametric Sensor Based on Magnetic Chitosan Acetylindole-Based Nanocomposite for the Determination of Sulfamethazine. ACS OMEGA 2024; 9:17323-17333. [PMID: 38645363 PMCID: PMC11024945 DOI: 10.1021/acsomega.3c10390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Revised: 03/08/2024] [Accepted: 03/22/2024] [Indexed: 04/23/2024]
Abstract
Sulfamethazine (SMZ), a persistent antibiotic, is frequently detected in drinking water and milk. For this reason, our research aimed to develop a novel electrochemical sensor based on a magnetic nanocomposite supported on chitosan modified by 3-acetylindole through the formation of chitosan acetylindole Schiff base (Chs-Aci). The objective was to detect extremely low concentrations of SMZ in milk. The synthesized nanocomposites were characterized by various techniques, including FT-IR, XRD, EDX, SEM, and TEM. To enhance the electrocatalytic efficiency for sensitive SMZ detection in food samples, a magnetic chitosan acetylindole nanocomposite (M-Chs-Aci) was employed as a modifier for a carbon paste electrode (CPE). The electrochemical measurements revealed that the M-Chs-Aci/CPE exhibits good electrocatalytic performance compared to a bare CPE. Moreover, low detection limit, repeatability, and stability were achieved at 0.021 μM, 3.83%, and 94.87%, respectively. Finally, the proposed M-Chs-Aci/CPE proved to be highly effective in detecting SMZ in milk samples. The obtained findings paved the way for the effective usability of M-Chs-Aci/CPE as a sensor for detecting SMZ in real samples, with acceptable recoveries of 95%-98.87%.
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Affiliation(s)
| | - Mortaga
M. Abou-Krisha
- Chemistry
Department, College of Science, Imam Mohammad
Ibn Saud Islamic University (IMSIU), Riyadh 11623, Saudi Arabia
- Chemistry
Department, Faculty of Science, South Valley
University, Luxor 85951, Egypt
| | - Abdulrahman G. Alhamzani
- Chemistry
Department, College of Science, Imam Mohammad
Ibn Saud Islamic University (IMSIU), Riyadh 11623, Saudi Arabia
| | - Abdullah N. Alotaibi
- Chemistry
Department, College of Science, Imam Mohammad
Ibn Saud Islamic University (IMSIU), Riyadh 11623, Saudi Arabia
| | - Tarek A. Yousef
- Chemistry
Department, College of Science, Imam Mohammad
Ibn Saud Islamic University (IMSIU), Riyadh 11623, Saudi Arabia
- Department
of Toxic and Narcotic Drug, Forensic Medicine, Mansoura Laboratory, Medicolegal Organization, Cairo 11435, Egypt
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5
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Zeng Q, Wang Y, Javeed A, Chen F, Li J, Guan Y, Chen B, Han B. Preparation and properties of polyvinyl alcohol/chitosan-based hydrogel with dual pH/NH 3 sensor for naked-eye monitoring of seafood freshness. Int J Biol Macromol 2024; 263:130440. [PMID: 38417763 DOI: 10.1016/j.ijbiomac.2024.130440] [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: 10/12/2023] [Revised: 02/22/2024] [Accepted: 02/23/2024] [Indexed: 03/01/2024]
Abstract
To address the issue of food spoilage causing health and economic loss, we developed a pH/NH3 dual sensitive hydrogel based on polyvinyl alcohol/chitosan (PVA/CS) containing chitosan-phenol red (CP). The CP was synthesized via Mannich reaction and immobilized it in PVA/CS hydrogel through freezing/thawing method to prepare the final PVA/CS/CP hydrogel. The synthesis of CP was confirmed by 1H NMR, FT-IR, XRD, UV-vis, and XPS. The characteristics of hydrogel were evaluated by FT-IR, XRD, SEM, mechanical properties, thermal stability, leaching, and color stability tests. The PVA/CS/CP hydrogel showed distinctly different color at various pH and NH3 vapor levels (yellow to purple). The hydrogel exhibited obvious color changes (ΔE = 46.95) in response to shrimp spoilage, stored at 4 °C. It showed positive and strong correlation between the ΔE values of the indicator hydrogel and total volatile basic nitrogen (TVB-N) as (R2 = 0.9573) and with pH as (R2 = 0.8686), respectively. These results clearly show that the PVA/CS/CP hydrogel could be applied for naked-eye real-time monitoring of seafood freshness in intelligent packaging.
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Affiliation(s)
- Qiuyu Zeng
- Department of Development Technology of Marine Resources, College of Life Sciences and Medicine, Laboratory of Antiallergic Functional Molecules, Zhejiang Sci-Tech University, Hangzhou 310018, PR China
| | - Yifan Wang
- Department of Development Technology of Marine Resources, College of Life Sciences and Medicine, Laboratory of Antiallergic Functional Molecules, Zhejiang Sci-Tech University, Hangzhou 310018, PR China
| | - Ansar Javeed
- Department of Development Technology of Marine Resources, College of Life Sciences and Medicine, Laboratory of Antiallergic Functional Molecules, Zhejiang Sci-Tech University, Hangzhou 310018, PR China
| | - Fengyun Chen
- School of Science, Zhejiang Sci-Tech University, Hangzhou 310018, PR China
| | - Jiaxing Li
- Department of Development Technology of Marine Resources, College of Life Sciences and Medicine, Laboratory of Antiallergic Functional Molecules, Zhejiang Sci-Tech University, Hangzhou 310018, PR China
| | - Yating Guan
- Department of Development Technology of Marine Resources, College of Life Sciences and Medicine, Laboratory of Antiallergic Functional Molecules, Zhejiang Sci-Tech University, Hangzhou 310018, PR China
| | - Baiyu Chen
- Department of Development Technology of Marine Resources, College of Life Sciences and Medicine, Laboratory of Antiallergic Functional Molecules, Zhejiang Sci-Tech University, Hangzhou 310018, PR China
| | - Bingnan Han
- Department of Development Technology of Marine Resources, College of Life Sciences and Medicine, Laboratory of Antiallergic Functional Molecules, Zhejiang Sci-Tech University, Hangzhou 310018, PR China.
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Zhang Z, Lefebvre C, Somerville SV, Tilley RD, Guénin E, Terrasson V. Pd nanoparticles embedded in nanolignin (Pd@LNP) as a water dispersible catalytic nanoreactor for Cr(VI), 4-nitrophenol reduction and CC coupling reactions. Int J Biol Macromol 2024; 254:127695. [PMID: 37913877 DOI: 10.1016/j.ijbiomac.2023.127695] [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: 08/11/2023] [Revised: 10/02/2023] [Accepted: 10/17/2023] [Indexed: 11/03/2023]
Abstract
The use of water-dispersible and sustainable Pd nanocatalysts to reduce toxic heavy metal ions and catalyze important organic reactions has profound significance for the environmental remediation and the catalytic industry. In this work, a novel water-dispersible and recyclable Pd@LNPs nanoreactor composed of Pd nanoparticle cluster core and LNPs shell was developed in microwave reactor in aqueous solution. It turned out that Pd nanoparticles grew uniformly and stably inside LNPs nanosphere due to the coordinated binding and interaction between Pd and the functional groups in LNPs, which was significantly different from surface loading. The green and biodegradable LNPs nanospheres are not only used as reducing agents for Pd (II) and nanocarriers, but also act as individual nanocontainers to provide favorable sites for reactions and effectively control the entry and release of reactants and products. Furthermore, the excellent and efficient catalytic properties of Pd@LNPs were exhibited by CC coupling reactions and the reduction of Cr(VI) and 4-nitrophenol. The Pd@LNPs prepared in this study have the advantages of excellent dispersion, great recyclability, high turnover frequency and better green sustainability metrics. It will have a great significance for the development of the potential high-value of lignin and the progress in the field of bio-nanocatalysts.
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Affiliation(s)
- Zhao Zhang
- Université de Technologie de Compiègne, ESCOM, TIMR (Integrated Transformations of Renewable Matter), Centre de Recherche Royallieu, CS 60 319-60 203 Compiègne Cedex, France
| | - Caroline Lefebvre
- Université de Technologie de Compiègne, ESCOM, TIMR (Integrated Transformations of Renewable Matter), Centre de Recherche Royallieu, CS 60 319-60 203 Compiègne Cedex, France
| | - Samuel V Somerville
- School of Chemistry and Australian Centre for NanoMedicine, University of New South Wales, Sydney 2052, Australia
| | - Richard D Tilley
- School of Chemistry, Electron Microscope Unit, Mark Wainwright Analytical Centre, The University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Erwann Guénin
- Université de Technologie de Compiègne, ESCOM, TIMR (Integrated Transformations of Renewable Matter), Centre de Recherche Royallieu, CS 60 319-60 203 Compiègne Cedex, France.
| | - Vincent Terrasson
- Université de Technologie de Compiègne, ESCOM, TIMR (Integrated Transformations of Renewable Matter), Centre de Recherche Royallieu, CS 60 319-60 203 Compiègne Cedex, France.
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7
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Huang J, Feng X, Wang Q, Liu D, Zhang S, Chu L. Fabrication and characterization of dihydromyricetin-loaded microcapsules stabilized by glyceryl monostearate and whey protein-xanthan gum. Int J Biol Macromol 2024; 254:128039. [PMID: 37956807 DOI: 10.1016/j.ijbiomac.2023.128039] [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: 08/06/2023] [Revised: 10/17/2023] [Accepted: 11/09/2023] [Indexed: 11/15/2023]
Abstract
Dihydromyricetin (DMY) is a lipophilic nutrient with various potential health benefits; however, its poor storage stability and low solubility and bioavailability limit its applications. This study aims to encapsulate DMY in microcapsules by membrane emulsification and freeze-drying methods to overcome these issues. Glyceryl monostearate (GMS, solid lipid) and octyl and decyl glycerate (ODO, liquid lipid) were applied as the inner cores. Whey protein and xanthan gum (XG) were used as wall materials. The prepared microcapsules had an irregular blocky aggregated structure with rough surfaces. All the microcapsules had a DMY loading of 0.85 %-1.1 % and encapsulation efficiency (EE) >85 %. GMS and XG increased the DMY loading and EE. The addition of GMS and an increased XG concentration led to a decrease in the rehydration rate. The in vitro release and digestion studies revealed that GMS and XG controlled the release and digestion of DMY. The chemical stability results indicated that GMS and XG protected DMY against oxidation. An antioxidant capacity study showed that GMS and XG helped DMY in the microcapsules exert antioxidant effects. This research study provides a platform for designing microcapsules with good stability and high bioavailability to deliver lipophilic bioactive compounds.
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Affiliation(s)
- Juan Huang
- School of Biology and Food Engineering, Changshu Institute of Technology, Changshu 215500, China.
| | - Xuan Feng
- School of Biology and Food Engineering, Changshu Institute of Technology, Changshu 215500, China
| | - Qingding Wang
- School of Biology and Food Engineering, Changshu Institute of Technology, Changshu 215500, China
| | - Dongchen Liu
- School of Biology and Food Engineering, Changshu Institute of Technology, Changshu 215500, China
| | - Shuo Zhang
- School of Biology and Food Engineering, Changshu Institute of Technology, Changshu 215500, China
| | - Lanling Chu
- Faculty of Food Science and Engineering, School of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing 210037, China
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8
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Zhu Q, Yin X, Tan Y, Wei D, Li Y, Pei X. Highly dispersed palladium nano-catalyst anchored on N-doped nanoporous carbon microspheres derived from chitosan for efficient and stable hydrogenation of quinoline. Int J Biol Macromol 2024; 254:127949. [PMID: 37951427 DOI: 10.1016/j.ijbiomac.2023.127949] [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: 05/16/2023] [Revised: 10/20/2023] [Accepted: 10/30/2023] [Indexed: 11/14/2023]
Abstract
Under the background of green chemistry, the synthesis of N-heterocycles using efficient, stable and long-life catalysts has still faced great challenges. Herein, we used biomass resource chitosan to fabricate a nanoporous chitosan carbon microsphere (CCM), and successfully designed a stable and efficient Pd nano-catalyst (CCM/Pd). Various physicochemical characterizations provided convincible evidences that the palladium nanoparticles (NPs) were tightly and evenly dispersed on the CCM with a mean diameter of 2.28 nm based on the nanoporous structure and abundant functional N/O groups in CCM. Importantly, the graphitized constructure, the formed defects and larger surface area in CCM were able to promote the immobilization of Pd NPs and the electron transfer between Pd and CCM, thereby significantly improving the catalytic activity. The CCM/Pd catalyst was applied for hydrogenation of quinoline compounds, which showed excellent catalytic activity and durability, as well as good substrate applicability. The application of renewable biomass-based catalysts contributes to the progression of a green/sustainable society.
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Affiliation(s)
- Qiudi Zhu
- School of Chemistry and Materials Science, Guizhou Normal University, Guiyang 550025, China
| | - Xiaogang Yin
- School of Chemistry and Materials Science, Guizhou Normal University, Guiyang 550025, China.
| | - Youjuan Tan
- School of Chemistry and Materials Science, Guizhou Normal University, Guiyang 550025, China
| | - Duoduo Wei
- School of Chemistry and Materials Science, Guizhou Normal University, Guiyang 550025, China
| | - Yan Li
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
| | - Xianglin Pei
- School of Chemistry and Materials Science, Guizhou Normal University, Guiyang 550025, China; Guizhou Key Laboratory of Inorganic Nonmetallic Functional Materials, Lightweight Materials Engineering Research Center of the Education Department of Guizhou, Guizhou Normal University, Guiyang 550025, China.
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9
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Zhu A, Xu Q, Huang J, Li Y, Zhang F, Qin S, Li S, Wan C, Xie H. Fabrication of Gelatin-Derived Gel Electrolyte Using Deep Eutectic Solvents through In Situ Derivatization and Crosslinking Strategy for Supercapacitors and Flexible Sensors. ACS APPLIED MATERIALS & INTERFACES 2023; 15:41483-41493. [PMID: 37608581 DOI: 10.1021/acsami.3c06966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/24/2023]
Abstract
The facile fabrication of gel polymer electrolytes is crucial to the development of flexible electronics, and the use of natural polymers as sources has obtained great attention due to their abundant, low-cost, biodegradable, easy modification, and biocompatible features. In this article, a facile fabrication protocol to engineer gelatin into gel electrolytes was developed by taking the advantages of both deep eutectic solvent (DES) (including its good solubility to gelatin and satisfactory electrochemical properties) and rich active functional groups of gelatin, through in situ derivatization and crosslinking strategy. A double-crosslinked DES gel electrolyte was prepared with the dissolution of gelatin in choline chloride and alcohol-based DES and a further crosslinking with Fe3+ ions. The obtained DES gel presented outstanding mechanical properties, excellent ionic conductivity (up to 101-102 mS/cm), a wide operating temperature range (-40 to 80 °C), satisfactory self-healing property, and good degradability. Moreover, the obtained DES gel electrolyte was successfully applied to supercapacitors and flexible sensors, showing excellent electrochemical performance and strain-response properties. In a word, our study provides a facile protocol to engineer gelatin into gel electrolytes by using deep eutectic solvent, showing significant insights into the design and preparation of sustainable gel polymer electrolytes and having great application potential in next-generation high-performance flexible electronics.
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Affiliation(s)
- Antai Zhu
- Department of New Energy Science & Engineering, College of Materials & Metallurgy, Guizhou University, Huaxi District, Guiyang 550025, P.R. China
| | - Qinqin Xu
- Department of New Energy Science & Engineering, College of Materials & Metallurgy, Guizhou University, Huaxi District, Guiyang 550025, P.R. China
| | - Jun Huang
- Department of New Energy Science & Engineering, College of Materials & Metallurgy, Guizhou University, Huaxi District, Guiyang 550025, P.R. China
| | - Yue Li
- Department of New Energy Science & Engineering, College of Materials & Metallurgy, Guizhou University, Huaxi District, Guiyang 550025, P.R. China
| | - Fazhi Zhang
- Department of New Energy Science & Engineering, College of Materials & Metallurgy, Guizhou University, Huaxi District, Guiyang 550025, P.R. China
| | - Shangdong Qin
- Department of New Energy Science & Engineering, College of Materials & Metallurgy, Guizhou University, Huaxi District, Guiyang 550025, P.R. China
| | - Shizhao Li
- Department of New Energy Science & Engineering, College of Materials & Metallurgy, Guizhou University, Huaxi District, Guiyang 550025, P.R. China
| | - Chao Wan
- Department of New Energy Science & Engineering, College of Materials & Metallurgy, Guizhou University, Huaxi District, Guiyang 550025, P.R. China
| | - Haibo Xie
- Department of New Energy Science & Engineering, College of Materials & Metallurgy, Guizhou University, Huaxi District, Guiyang 550025, P.R. China
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10
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Sanders MA, Chittari SS, Sherman N, Foley JR, Knight AS. Versatile Triphenylphosphine-Containing Polymeric Catalysts and Elucidation of Structure-Function Relationships. J Am Chem Soc 2023; 145:9686-9692. [PMID: 37079910 DOI: 10.1021/jacs.3c01092] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/22/2023]
Abstract
Synthetic polymers are a modular solution to bridging the two most common classes of catalysts: proteins and small molecules. Polymers offer the synthetic versatility of small-molecule catalysts while simultaneously having the ability to construct microenvironments mimicking those of natural proteins. We synthesized a panel of polymeric catalysts containing a novel triphenylphosphine acrylamide monomer and investigated how their properties impact the rate of a model Suzuki-Miyaura cross-coupling reaction. Systematic variation of polymer properties, such as the molecular weight, functional density, and comonomer identity, led to tunable reaction rates and solvent compatibility, including full conversion in an aqueous medium. Studies with bulkier substrates revealed connections between polymer parameters and reaction conditions that were further elucidated with a regression analysis. Some connections were substrate-specific, highlighting the value of the rapidly tunable polymer catalyst. Collectively, these results aid in building structure-function relationships to guide the development of polymer catalysts with tunable substrates and environmental compatibility.
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Affiliation(s)
- Matthew A Sanders
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Supraja S Chittari
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Nicole Sherman
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Jack R Foley
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Abigail S Knight
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
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11
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Sustainable Utilization of Palladium from Industrial Catalytic Waste by A Smart Magnetic Nano Stirring Robot. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/16/2023]
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12
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Kumar K, Anand SR, Kori M, Mishra N, Shrivastava S. A study on the synthesis and characterization of Schiff base stabilized silver nanoparticles against propionic bacteria. J INDIAN CHEM SOC 2023. [DOI: 10.1016/j.jics.2023.100965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/13/2023]
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13
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Neysi M, Elhamifar D. Magnetic ethylene-based periodic mesoporous organosilica supported palladium: An efficient and recoverable nanocatalyst for Suzuki reaction. Front Chem 2023; 11:1112911. [PMID: 36817170 PMCID: PMC9933923 DOI: 10.3389/fchem.2023.1112911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 01/19/2023] [Indexed: 02/05/2023] Open
Abstract
In the present study, a novel magnetic ethylene-based periodic mesoporous organosilica supported Pd-Schiff base complex (Fe3O4@PMO/SB-Pd) was prepared, characterized and applied as a recoverable nanocatalyst for green synthesis of Suzuki products. Chemical composition, magnetic and thermal behavior, morphology and particle size of Fe3O4@PMO/SB-Pd were investigated by using FT-IR, TGA, EDX, VSM, PXRD, TEM and Scanning electron microscopy (SEM) analyses. The Fe3O4@PMO/SB-Pd nanocomposite was applied as an efficient nanocatalyst in the Suzuki reaction under ultrasonic conditions giving corresponding products in high yield. Some advantages of this study are simple purification of products, the use of water solvent, easy catalyst separation, short reaction time and high catalyst efficiency and recoverability.
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14
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Palladium Supported on Bioinspired Materials as Catalysts for C–C Coupling Reactions. Catalysts 2023. [DOI: 10.3390/catal13010210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
In recent years, the immobilization of palladium nanoparticles on solid supports to prepare active and stable catalytic systems has been deeply investigated. Compared to inorganic materials, naturally occurring organic solids are inexpensive, available and abundant. Moreover, the surface of these solids is fully covered by chelating groups which can stabilize the metal nanoparticles. In the present review, we have focused our attention on natural biomaterials-supported metal catalysts applied to the formation of C–C bonds by Mizoroki–Heck, Suzuki–Miyaura and Sonogashira reactions. A systematic approach based on the nature of the organic matrix will be followed: (i) metal catalysts supported on cellulose; (ii) metal catalysts supported on starch; (iii) metal catalysts supported on pectin; (iv) metal catalysts supported on agarose; (v) metal catalysts supported on chitosan; (vi) metal catalysts supported on proteins and enzymes. We will emphasize the effective heterogeneity and recyclability of each catalyst, specifying which studies were carried out to evaluate these aspects.
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15
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Ndlovu LN, Malatjie KI, Donga C, Mishra AK, Nxumalo EN, Mishra SB. Catalytic degradation of methyl orange using beta cyclodextrin modified polyvinylidene fluoride mixed matrix membranes imbedded with in‐situ generated palladium nanoparticles. J Appl Polym Sci 2022. [DOI: 10.1002/app.53270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Lloyd N. Ndlovu
- Institute for Nanotechnology and Water Sustainability, College of Science, Engineering and Technology University of South Africa Johannesburg South Africa
| | - Kgolofelo I. Malatjie
- Institute for Nanotechnology and Water Sustainability, College of Science, Engineering and Technology University of South Africa Johannesburg South Africa
| | - Cabangani Donga
- Institute for Nanotechnology and Water Sustainability, College of Science, Engineering and Technology University of South Africa Johannesburg South Africa
| | - Ajay K. Mishra
- College of Pharmaceutical and Chemical Engineering Hebei University of Science and Technology Shijiazhuang China
- Academy of Nanotechnology and Wastewater Innovations Johannesburg South Africa
- Department of Chemistry Durban University of Technology Durban South Africa
| | - Edward N. Nxumalo
- Institute for Nanotechnology and Water Sustainability, College of Science, Engineering and Technology University of South Africa Johannesburg South Africa
| | - Shivani B. Mishra
- College of Pharmaceutical and Chemical Engineering Hebei University of Science and Technology Shijiazhuang China
- Academy of Nanotechnology and Wastewater Innovations Johannesburg South Africa
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16
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Chen B, Ding L, Wang Y, Zhang Y. High efficient adsorption for thorium in aqueous solution using a novel tentacle-type chitosan-based aerogel: Adsorption behavior and mechanism. Int J Biol Macromol 2022; 222:1747-1757. [DOI: 10.1016/j.ijbiomac.2022.09.256] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 09/22/2022] [Accepted: 09/28/2022] [Indexed: 11/05/2022]
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17
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Efficient and Eco-Friendly Perspectives for C-H Arylation of Benzothiazole Utilizing Pd Nanoparticle-Decorated Chitosan. Catalysts 2022. [DOI: 10.3390/catal12091000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
In this contribution, an eco-friendly, sustainable, and efficient palladium nanoparticle-decorated chitosan (Pd@Chitosan) catalyst was synthesized by a simple impregnation method. The synthesized material was utilized as a heterogeneous catalyst for the C-H arylation of benzothiazole under ultrasonic irradiation. The Pd@Chitosan catalyst efficiently catalyzed the conversion of aryl iodides and bromides to 1-(4-(benzothiazol-2-yl)phenyl)ethan-1-one selectively. A single product of 83–93% yield was obtained in N,N-dimethylformamide solvent at 80 °C for 2.5h. This study reveals that Pd@Chitosan is an efficient catalyst, which catalyzes the C-H arylation with good reaction yields. The activity of the Pd@Chitosan is due to the presence of highly dispersed Pd(0) nanoparticles on the surface of the chitosan and Pd2+; a tentative mechanism was proposed based on the XPS results of the fresh catalyst and spent catalyst.
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18
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Chitosan: A Sustainable Material for Multifarious Applications. Polymers (Basel) 2022; 14:polym14122335. [PMID: 35745912 PMCID: PMC9228948 DOI: 10.3390/polym14122335] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 05/25/2022] [Accepted: 05/30/2022] [Indexed: 02/04/2023] Open
Abstract
Due to the versatility of its features and capabilities, chitosan generated from marine crustacean waste is gaining importance and appeal in a wide variety of applications. It was initially used in pharmaceutical and medical applications due to its antibacterial, biocompatible, and biodegradable properties. However, as the demand for innovative materials with environmentally benign properties has increased, the application range of chitosan has expanded, and it is now used in a variety of everyday applications. The most exciting aspect of the chitosan is its bactericidal properties against pathogens, which are prevalent in contaminated water and cause a variety of human ailments. Apart from antimicrobial and water filtration applications, chitosan is used in dentistry, in water filtration membranes to remove metal ions and some heavy metals from industrial effluents, in microbial fuel cell membranes, and in agriculture to maintain moisture in fruits and leaves. It is also used in skin care products and cosmetics as a moisturizer, in conjunction with fertilizer to boost plant immunity, and as a bi-adhesive for bonding woods and metals. As it has the capacity to increase the life span of food items and raw meat, it is an unavoidable component in food packing and preservation. The numerous applications of chitosan are reviewed in this brief study, as well as the approaches used to incorporate chitosan alongside traditional materials and its effect on the outputs.
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19
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Wang X, Dang Q, Liu C, Chang G, Song H, Xu Q, Ma Y, Li B, Zhang B, Cha D. Antibacterial porous sponge fabricated with capric acid-grafted chitosan and oxidized dextran as a novel hemostatic dressing. Carbohydr Polym 2022; 277:118782. [PMID: 34893218 DOI: 10.1016/j.carbpol.2021.118782] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 08/22/2021] [Accepted: 10/14/2021] [Indexed: 02/08/2023]
Abstract
This work aims to fabricate multifunctional hemostatic sponges (C-ODs). Porous C-ODs were first constructed by using capric acid-modified chitosan (CSCA) and oxidized dextrans (ODs) with different oxidation degrees. Batches of experiments showed that (i) CSCA (33.39% of grafting degree), ODs, and C-ODs (100-200 μm in pore size) were synthesized, evidenced by FT-IR, 1H NMR, elemental analysis, hydroxylamine hydrochloride titration, and SEM results; (ii) among C-ODs, C-OD2 had appropriate porosity (85.0%), swelling (20 times its dry weight), absorption, water retention, water vapor transmission, and mechanical properties; (iii) C-OD2 possessed low toxicity (relative cell viability > 86%), low hemolysis rate (0.65%), suitable tissue adhesion (4.74 kPa), and strong antibacterial efficacy (five strains); and (iv) C-OD2's dynamic blood clotting was within 30 s. In three animal injury models, C-OD2's hemostasis time and blood loss were fairly lower than commercial gelatin sponge. Totally, C-OD2 might serve as an ideal hemostatic dressing.
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Affiliation(s)
- Xiaoyu Wang
- College of Marine Life Sciences, Ocean University of China, 5 Yushan Road, Qingdao 266003, PR China
| | - Qifeng Dang
- College of Marine Life Sciences, Ocean University of China, 5 Yushan Road, Qingdao 266003, PR China
| | - Chengsheng Liu
- College of Marine Life Sciences, Ocean University of China, 5 Yushan Road, Qingdao 266003, PR China.
| | - Guozhu Chang
- College of Marine Life Sciences, Ocean University of China, 5 Yushan Road, Qingdao 266003, PR China
| | - Hao Song
- College of Marine Life Sciences, Ocean University of China, 5 Yushan Road, Qingdao 266003, PR China
| | - Qing Xu
- College of Marine Life Sciences, Ocean University of China, 5 Yushan Road, Qingdao 266003, PR China
| | - Yue Ma
- College of Marine Life Sciences, Ocean University of China, 5 Yushan Road, Qingdao 266003, PR China
| | - Boyuan Li
- College of Marine Life Sciences, Ocean University of China, 5 Yushan Road, Qingdao 266003, PR China
| | - Bonian Zhang
- Qingdao Aorun Biotechnology Co., Ltd., Room 602, Century Mansion, 39 Donghaixi Road, Qingdao 266071, PR China
| | - Dongsu Cha
- The Graduate School of Biotechnology, Korea University, Seoul 136-701, South Korea
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20
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Phosphine-Functionalized Chitosan Microparticles as Support Materials for Palladium Nanoparticles in Heck Reactions. Catal Letters 2022. [DOI: 10.1007/s10562-021-03914-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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21
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Kapoor A, Rajput JK. Staudinger k
etene–imine
[2+2] cycloaddition of novel azomethines to synthesize biologically active azetidinone derivatives and their in vitro antimicrobial studies. J Heterocycl Chem 2021. [DOI: 10.1002/jhet.4357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Atul Kapoor
- Department of Chemistry Dr. B.R Ambedkar National Institute of Technology Jalandhar India
| | - Jaspreet Kaur Rajput
- Department of Chemistry Dr. B.R Ambedkar National Institute of Technology Jalandhar India
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22
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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: 29] [Impact Index Per Article: 9.7] [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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23
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Sayin F, Tunali Akar S, Akar T, Celik S, Gedikbey T. Chitosan immobilization and Fe 3O 4 functionalization of olive pomace: An eco-friendly and recyclable Pb 2+ biosorbent. Carbohydr Polym 2021; 269:118266. [PMID: 34294298 DOI: 10.1016/j.carbpol.2021.118266] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 05/10/2021] [Accepted: 05/26/2021] [Indexed: 12/21/2022]
Abstract
An effective and sustainable biosorbent (MagOPIC) was prepared from chitosan and olive pomace by the combined action of immobilization and magnetic modification to remediate Pb2+-contaminated waters. Pb2+ sorption yield at the end of the equilibrium (45 min) period was estimated to be 98.56 ± 0.28% at pH 5.5. Agitation speed, ionic strength, and temperature did not significantly affect the Pb2+ biosorption. Biosorption kinetics are successfully fitted by the pseudo-second-order equation while the equilibrium biosorption data are properly modeled using the Freundlich and D-R isotherms. MagOPIC has also exhibited a high biosorption yield in the column tests (≥99%) and showed remarkable stability up to twenty consecutive regeneration cycles. Furthermore, it was successfully used for the treatment of Pb2+ containing real wastewater. The findings of this work highlighted the potential use of MagOPIC as a novel, cost-effective and eco-friendly biosorbent for the Pb2+ removal from the contaminated aquatic phase.
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Affiliation(s)
- Fatih Sayin
- Department of Chemistry, Faculty of Science and Letters, Eskisehir Osmangazi University, TR-26040 Eskisehir, Turkey.
| | - Sibel Tunali Akar
- Department of Chemistry, Faculty of Science and Letters, Eskisehir Osmangazi University, TR-26040 Eskisehir, Turkey
| | - Tamer Akar
- Department of Chemistry, Faculty of Science and Letters, Eskisehir Osmangazi University, TR-26040 Eskisehir, Turkey
| | - Sema Celik
- Department of Chemistry, Faculty of Science and Letters, Eskisehir Osmangazi University, TR-26040 Eskisehir, Turkey
| | - Tevfik Gedikbey
- Department of Chemistry, Faculty of Science and Letters, Eskisehir Osmangazi University, TR-26040 Eskisehir, Turkey
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24
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Liu J, Li P, Jiang R, Zheng X, Liu P. Ru Nanoparticles Immobilized on Chitosan as Effective Catalysts for Boosting NH
3
BH
3
Hydrolysis. ChemCatChem 2021. [DOI: 10.1002/cctc.202100781] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Jiaxin Liu
- Green Catalysis Center College of Chemistry Zhengzhou University Zhengzhou 450001 P. R. China
| | - Peiyun Li
- Green Catalysis Center College of Chemistry Zhengzhou University Zhengzhou 450001 P. R. China
| | - Renfeng Jiang
- Green Catalysis Center College of Chemistry Zhengzhou University Zhengzhou 450001 P. R. China
| | - Xiucheng Zheng
- Green Catalysis Center College of Chemistry Zhengzhou University Zhengzhou 450001 P. R. China
| | - Pu Liu
- Green Catalysis Center College of Chemistry Zhengzhou University Zhengzhou 450001 P. R. China
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25
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Alkabli J, Rizk MA, Elshaarawy RFM, El-Sayed WN. Ionic chitosan Schiff bases supported Pd(II) and Ru(II) complexes; production, characterization, and catalytic performance in Suzuki cross-coupling reactions. Int J Biol Macromol 2021; 184:454-462. [PMID: 34157331 DOI: 10.1016/j.ijbiomac.2021.06.105] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2021] [Revised: 06/14/2021] [Accepted: 06/15/2021] [Indexed: 01/01/2023]
Abstract
Taking the advantage of multifunctional characteristics of chitosan (CS), we have developed new scaffolds (imidazolium-vanillyl-chitosan Schiff bases (IVCSSBs)) for supporting Pd(II) and Ru(II) ions in catalyzing Suzuki coupling reactions. The structures of new materials were described based on their elemental, spectral, thermal, and microscopic analysis. The strong interactions between the binding sites of IVCSSB ligand (OH, H-C=N, and OCH3 groups) and Pd(II) ions resulted in the formation of an excellent heterogeneous catalyst (Pd(II)IVCSSB1) with amazing catalytic activity (up to 99%) and highly stable in the reaction medium. The reusability experiments for Pd(II)IVCSSB1 revealed that there is no appreciable decrease in its catalytic activity even after five consecutive operation runs. Furthermore, this heterogeneous catalyst showed an excellent selectivity toward the cross-coupling reaction where no homo-coupling byproducts were observed in the 1H NMR spectra of the obtained products. Consequently, the present ionic catalytic system may open a new window for a novel generation of ionic bio-based catalysts for organic transformations.
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Affiliation(s)
- J Alkabli
- Department of Chemistry, College of Sciences and Arts - Alkamil, University of Jeddah, Jeddah 23218, Saudi Arabia
| | - Moustafa A Rizk
- Chemistry Department, College of Science and Arts-Sharurah, Najran University, Sharurah, Saudi Arabia; Department of Chemistry, Faculty of Science, Suez Canal University, Ismailia, Egypt
| | - Reda F M Elshaarawy
- Department of Chemistry, Faculty of Science, Suez University, 43533 Suez, Egypt; Institut für Anorganische Chemie und Strukturchemie, Heinrich-Heine Universität Düsseldorf, Düsseldorf, Germany.
| | - W N El-Sayed
- Department of Chemistry, College of Sciences and Arts - Alkamil, University of Jeddah, Jeddah 23218, Saudi Arabia; Department of Chemistry, Faculty of Science, Suez University, 43533 Suez, Egypt.
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26
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Shaikh N, Pamidimukkala P. Magnetic chitosan stabilized palladium nanostructures: Potential catalysts for aqueous Suzuki coupling reactions. Int J Biol Macromol 2021; 183:1560-1573. [PMID: 34022317 DOI: 10.1016/j.ijbiomac.2021.05.103] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 05/03/2021] [Accepted: 05/15/2021] [Indexed: 02/05/2023]
Abstract
This work describes the preparation of palladium-based catalyst supported on magnetic chitosan (Pd@IO-Chitosan) for Suzuki Miyaura C-C coupling reaction. The Pd@IO-Chitosan catalyst was characterized using different spectroscopic and microscopic techniques such as Fourier transform infrared spectroscopy (FT-IR), transmission electron microscope (TEM), vibrating sample magnetometer (VSM), X-ray powder diffraction (XRD), X-ray Absorption Near Edge Structure (XANES) Spectroscopy and X-ray photoelectron spectroscopy (XPS). Pd@IO-Chitosan was further analysed by thermogravimetric analysis (TGA) in order to determine its thermal behavior. The catalyst comprised Pd, PdO species stabilised by chitosan that facilitated Suzuki coupling reactions. Palladium loading as low as 0.0055 mol% was found to be effective for aqueous Suzuki cross-couplings with excellent yields of over 99%. The catalyst could be recycled and reused at least 12 times with no significant decrease in its catalytic activity.
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Affiliation(s)
- Naznin Shaikh
- Department of Chemistry, Faculty of Science, The M. S. University of Baroda, Sayajigunj, Vadodara 390002, India
| | - Padmaja Pamidimukkala
- Department of Chemistry, Faculty of Science, The M. S. University of Baroda, Sayajigunj, Vadodara 390002, India.
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27
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Design of nanostructured palladium catalyst supported by chitosan/Co 3O 4 microspheres and investigation of its catalytic behavior against synthesis of benzonitriles. Int J Biol Macromol 2021; 182:722-729. [PMID: 33862074 DOI: 10.1016/j.ijbiomac.2021.04.068] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 04/09/2021] [Accepted: 04/11/2021] [Indexed: 12/17/2022]
Abstract
Designing of eco-friendly, low cost, and thermally stable stabilizing/supporting agents are always desired for production of catalyst systems which provide good catalytic performance in organic reactions. In this study, a novel, green, and efficient stabilizer containing chitosan/Co3O4 microspheres (CS/Co3O4) was developed. Palladium nanoparticles (Pd NPs) were then successfully immobilized on CS/Co3O4 as a heterogeneous nanocatalyst (Pd NPs/CS/Co3O4). Characterization of the designed materials were performed by FT-IR, TEM, FE-SEM, XRD, and EDS and it was determined that Pd NPs formed as approximately 20 nm. Catalytic behavior of Pd NPs/CS/Co3O4 was investigated in the production of different substituted benzonitriles via aryl halide cyanation. Catalytic studies indicate that electron-rich or poor aromatic halides were smoothly cyanated with good reaction yields by Pd NPs/CS/Co3O4 nanocatalyst by using K4[Fe(CN)6] as the cyanating agent. Moreover, it was found that Pd NPs/CS/Co3O4 nanocatalyst provided not only good reaction yields and but also good recovery/reusability for six times in the aryl halide cyanations. This paper displays that Pd NPs/CS/Co3O4 nanocatalyst has a great catalytic and recycling potential for aryl halide cyanations.
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