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Krishna DV, Sankar MR, Sarma PVGK, Samundeshwari EL. Copper nanoparticles loaded gelatin/ polyvinyl alcohol/ guar gum-based 3D printable multimaterial hydrogel for tissue engineering applications. Int J Biol Macromol 2024; 276:133866. [PMID: 39009268 DOI: 10.1016/j.ijbiomac.2024.133866] [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: 04/04/2024] [Revised: 07/01/2024] [Accepted: 07/11/2024] [Indexed: 07/17/2024]
Abstract
Hydrogels are becoming increasingly significant in tissue engineering because of their numerous benefits, including biocompatibility, biodegradability, and their ability to provide a supportive structure for cell proliferation. This study presents the synthesis and characterization of a new multimaterial hydrogel with 3D-printing capabilities composed of copper nanoparticle-reinforced gelatin, polyvinyl alcohol (PVA), and guar gum-based biomaterials intended for tissue engineering applications. Combining CuNPs aims to enhance the hydrogel's antibacterial properties, mechanical strength, and bioactivity, which are essential for successful tissue regeneration. Hydrogels are chemically cross-linked with glyoxal and analyzed through different assessments to examine the compressive behavior, surface morphology, sorbing capacity, biocompatibility, thermal stability, and degradation properties. The results demonstrated that including CuNPs significantly improved the hydrogel's compressive modulus (4.18 MPa) for the hydrogel with the CuNPs and provided better antibacterial activity against common pathogens with controlled degradation. All the hydrogels exhibited a lower coefficient of friction, which was below 0.1. In vitro cell culture studies using chondrocytes indicated that the CuNPs-loaded hydrogel supported cell proliferation and growth of chondrogenic genes such as collagen type II (COL2) and aggrecan (ACAN). The biocompatibility and enhanced mechanical properties of the multimaterial hydrogel make it a promising candidate for developing customized, patient-specific tissue engineering scaffolds.
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Affiliation(s)
- D V Krishna
- Department of Mechanical Engineering, Indian Institute of Technology Tirupati, Andhra Pradesh 517619, India
| | - M R Sankar
- Department of Mechanical Engineering, Indian Institute of Technology Tirupati, Andhra Pradesh 517619, India.
| | - P V G K Sarma
- Department of Biotechnology, Sri Venkateswara Institute of Medical Sciences, Tirupati, Andhra Pradesh 517502, India
| | - E L Samundeshwari
- Department of Biotechnology, Sri Venkateswara Institute of Medical Sciences, Tirupati, Andhra Pradesh 517502, India
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2
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Li J, Jin X, Jiao Z, Gao L, Dai X, Cheng L, Wang Y, Yan LT. Designing antibacterial materials through simulation and theory. J Mater Chem B 2024. [PMID: 39189825 DOI: 10.1039/d4tb01277a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/28/2024]
Abstract
Antibacterial materials have a wide range of potential applications in bio-antimicrobial, environmental antimicrobial, and food antimicrobial fields due to their intrinsic antimicrobial properties, which can circumvent the development of drug resistance in bacteria. Understanding the intricate mechanisms and intrinsic nature of diverse antibacterial materials is significant for the formulation of guidelines for the design of materials with rapid and efficacious antimicrobial action and a high degree of biomedical material safety. Herein, this review highlights the recent advances in investigating antimicrobial mechanisms of different antibacterial materials with a particular focus on tailored computer simulations and theoretical analysis. From the view of structure and function, we summarize the characteristics and mechanisms of different antibacterial materials, introduce the latest advances of new antibacterial materials, and discuss the design concept and development direction of new materials. In addition, we underscore the significance of employing simulation and theoretical methodologies to elucidate the intrinsic antimicrobial mechanisms, which is crucial for a comprehensive comprehension of the control strategies, safer biomedical applications, and the management of health and environmental concerns associated with antibacterial materials. This review could potentially stimulate further endeavors in fundamental research and facilitate the extensive utilization of computational and theoretical approaches in the design of novel functional nanomaterials.
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Affiliation(s)
- Jiaqi Li
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.
| | - Xueqing Jin
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.
| | - Zheng Jiao
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.
| | - Lijuan Gao
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.
| | - Xiaobin Dai
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.
| | - Linghe Cheng
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.
| | - Yuming Wang
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.
| | - Li-Tang Yan
- State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China.
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3
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Naveas N, Pulido R, Torres-Costa V, Agulló-Rueda F, Santibáñez M, Malano F, Recio-Sánchez G, Garrido-Miranda KA, Manso-Silván M, Hernández-Montelongo J. Antibacterial Films of Silver Nanoparticles Embedded into Carboxymethylcellulose/Chitosan Multilayers on Nanoporous Silicon: A Layer-by-Layer Assembly Approach Comparing Dip and Spin Coating. Int J Mol Sci 2023; 24:10595. [PMID: 37445773 DOI: 10.3390/ijms241310595] [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: 05/28/2023] [Revised: 06/18/2023] [Accepted: 06/19/2023] [Indexed: 07/15/2023] Open
Abstract
The design and engineering of antibacterial materials are key for preventing bacterial adherence and proliferation in biomedical and household instruments. Silver nanoparticles (AgNPs) and chitosan (CHI) are broad-spectrum antibacterial materials with different properties whose combined application is currently under optimization. This study proposes the formation of antibacterial films with AgNPs embedded in carboxymethylcellulose/chitosan multilayers by the layer-by-layer (LbL) method. The films were deposited onto nanoporous silicon (nPSi), an ideal platform for bioengineering applications due to its biocompatibility, biodegradability, and bioresorbability. We focused on two alternative multilayer deposition processes: cyclic dip coating (CDC) and cyclic spin coating (CSC). The physicochemical properties of the films were the subject of microscopic, microstructural, and surface-interface analyses. The antibacterial activity of each film was investigated against Escherichia coli (Gram-negative) and Staphylococcus aureus (Gram-positive) bacteria strains as model microorganisms. According to the findings, the CDC technique produced multilayer films with higher antibacterial activity for both bacteria compared to the CSC method. Bacteria adhesion inhibition was observed from only three cycles. The developed AgNPs-multilayer composite film offers advantageous antibacterial properties for biomedical applications.
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Affiliation(s)
- Nelson Naveas
- Departamento de Física Aplicada, Universidad Autónoma de Madrid, 28049 Madrid, Spain
- Departamento de Ingeniería Química y Procesos de Minerales, Universidad de Antofagasta, Antofagasta 1270300, Chile
| | - Ruth Pulido
- Departamento de Física Aplicada, Universidad Autónoma de Madrid, 28049 Madrid, Spain
- Departamento de Química, Universidad de Antofagasta, Avda. Universidad de Antofagasta 02800, Antofagasta 1240000, Chile
| | - Vicente Torres-Costa
- Departamento de Física Aplicada, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Fernando Agulló-Rueda
- Instituto de Ciencia de Materiales de Madrid (ICMM), Consejo Superior de Investigaciones Científicas (CSIC), 28049 Madrid, Spain
| | - Mauricio Santibáñez
- Departamento de Ciencias Físicas, Universidad de la Frontera, Temuco 4811230, Chile
| | - Francisco Malano
- Departamento de Ciencias Físicas, Universidad de la Frontera, Temuco 4811230, Chile
- Centro de Excelencia en Física e Ingeniería en Salud (CFIS), Universidad de La Frontera, Temuco 4811230, Chile
| | - Gonzalo Recio-Sánchez
- Facultad de Ingeniería, Arquitectura y Diseño, Universidad de San Sebastián, Concepción 4080871, Chile
| | - Karla A Garrido-Miranda
- Núcleo Científico y Tecnológico de Biorecursos (BIOREN), Universidad de La Frontera, Temuco 4811230, Chile
- Centro de Genómica Nutricional Agroacuícola (CGNA), Temuco 4780000, Chile
| | - Miguel Manso-Silván
- Departamento de Física Aplicada, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Jacobo Hernández-Montelongo
- Departamento de Ciencias Matemáticas y Físicas, Universidad Católica de Temuco, Temuco 4813302, Chile
- Departamento de Bioingeniería Traslacional, Universidad de Guadalajara, Guadalajara 44430, Mexico
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Smola-Dmochowska A, Lewicka K, Macyk A, Rychter P, Pamuła E, Dobrzyński P. Biodegradable Polymers and Polymer Composites with Antibacterial Properties. Int J Mol Sci 2023; 24:ijms24087473. [PMID: 37108637 PMCID: PMC10138923 DOI: 10.3390/ijms24087473] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 04/05/2023] [Accepted: 04/07/2023] [Indexed: 04/29/2023] Open
Abstract
Antibiotic resistance is one of the greatest threats to global health and food security today. It becomes increasingly difficult to treat infectious disorders because antibiotics, even the newest ones, are becoming less and less effective. One of the ways taken in the Global Plan of Action announced at the World Health Assembly in May 2015 is to ensure the prevention and treatment of infectious diseases. In order to do so, attempts are made to develop new antimicrobial therapeutics, including biomaterials with antibacterial activity, such as polycationic polymers, polypeptides, and polymeric systems, to provide non-antibiotic therapeutic agents, such as selected biologically active nanoparticles and chemical compounds. Another key issue is preventing food from contamination by developing antibacterial packaging materials, particularly based on degradable polymers and biocomposites. This review, in a cross-sectional way, describes the most significant research activities conducted in recent years in the field of the development of polymeric materials and polymer composites with antibacterial properties. We particularly focus on natural polymers, i.e., polysaccharides and polypeptides, which present a mechanism for combating many highly pathogenic microorganisms. We also attempt to use this knowledge to obtain synthetic polymers with similar antibacterial activity.
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Affiliation(s)
- Anna Smola-Dmochowska
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34 Marii Curie-Skłodowskiej Str., 41-819 Zabrze, Poland
| | - Kamila Lewicka
- Faculty of Science and Technology, Jan Dlugosz University in Czestochowa, 13/15 Armii Krajowej Av., 42-200 Czestochowa, Poland
| | - Alicja Macyk
- Department of Biomaterials and Composites, Faculty of Materials Science and Ceramics, AGH University of Science and Technology, 30 Mickiewicza Av., 30-059 Kraków, Poland
| | - Piotr Rychter
- Faculty of Science and Technology, Jan Dlugosz University in Czestochowa, 13/15 Armii Krajowej Av., 42-200 Czestochowa, Poland
| | - Elżbieta Pamuła
- Department of Biomaterials and Composites, Faculty of Materials Science and Ceramics, AGH University of Science and Technology, 30 Mickiewicza Av., 30-059 Kraków, Poland
| | - Piotr Dobrzyński
- Centre of Polymer and Carbon Materials, Polish Academy of Sciences, 34 Marii Curie-Skłodowskiej Str., 41-819 Zabrze, Poland
- Faculty of Science and Technology, Jan Dlugosz University in Czestochowa, 13/15 Armii Krajowej Av., 42-200 Czestochowa, Poland
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Paredes P, Rauwel E, Wragg DS, Rapenne L, Estephan E, Volobujeva O, Rauwel P. Sunlight-Driven Photocatalytic Degradation of Methylene Blue with Facile One-Step Synthesized Cu-Cu 2O-Cu 3N Nanoparticle Mixtures. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:1311. [PMID: 37110901 PMCID: PMC10144494 DOI: 10.3390/nano13081311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 04/03/2023] [Accepted: 04/06/2023] [Indexed: 06/19/2023]
Abstract
Sunlight-driven photocatalytic degradation is an effective and eco-friendly technology for the removal of organic pollutants from contaminated water. Herein, we describe the one-step synthesis of Cu-Cu2O-Cu3N nanoparticle mixtures using a novel non-aqueous, sol-gel route and their application in the solar-driven photocatalytic degradation of methylene blue. The crystalline structure and morphology were investigated with XRD, SEM and TEM. The optical properties of the as-prepared photocatalysts were investigated with Raman, FTIR, UV-Vis and photoluminescence spectroscopies. The influence of the phase proportions of Cu, Cu2O and Cu3N in the nanoparticle mixtures on the photocatalytic activity was also investigated. Overall, the sample containing the highest quantity of Cu3N exhibits the highest photocatalytic degradation efficiency (95%). This enhancement is attributed to factors such as absorption range broadening, increased specific surface of the photocatalysts and the downward band bending in the p-type semiconductors, i.e., Cu3N and Cu2O. Two different catalytic dosages were studied, i.e., 5 mg and 10 mg. The higher catalytic dosage exhibited lower photocatalytic degradation efficiency owing to the increase in the turbidity of the solution.
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Affiliation(s)
- Patricio Paredes
- Institute of Forestry and Engineering Sciences, Estonian University of Life Sciences, Kreutzwaldi 56/1, 51014 Tartu, Estonia; (P.P.); (E.R.)
| | - Erwan Rauwel
- Institute of Forestry and Engineering Sciences, Estonian University of Life Sciences, Kreutzwaldi 56/1, 51014 Tartu, Estonia; (P.P.); (E.R.)
| | - David S. Wragg
- Department of Chemistry and SMN, University of Oslo, 0315 Oslo, Norway;
| | - Laetitia Rapenne
- Grenoble Institute of Engineering, LMGP, University Grenoble Alpes, CNRS, F-38000 Grenoble, France;
| | - Elias Estephan
- Laboratory of Bioengineering and Biosciences, LBN, Univ Montpellier, 34193 Montpellier, France
| | - Olga Volobujeva
- Institute of Materials and Environmental Technology, Tallinn University of Technology, 19086 Tallinn, Estonia;
| | - Protima Rauwel
- Institute of Forestry and Engineering Sciences, Estonian University of Life Sciences, Kreutzwaldi 56/1, 51014 Tartu, Estonia; (P.P.); (E.R.)
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6
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Ag/Cu-Chitosan Composite Improves Laundry Hygiene and Reduces Silver Emission in Washing Machines. Polymers (Basel) 2023; 15:polym15030695. [PMID: 36771996 PMCID: PMC9919517 DOI: 10.3390/polym15030695] [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: 01/02/2023] [Revised: 01/25/2023] [Accepted: 01/28/2023] [Indexed: 02/03/2023] Open
Abstract
Textiles can be contaminated with pathogens during household laundering, potentially leading to human sickness. In this work, chitosan (CTS) was used as a substrate to prepare Ag/Cu-CTS composite, which was applied in laundering and showed a remarkable antibacterial effect on Escherichia coli and Staphylococcus aureus. The mechanical strength of Ag/Cu-CTS composite beads was higher than 400 MPa. The Ag/Cu-CTS composite were further characterized by scanning electron microscopy and energy dispersive spectroscopy. This composite had a strong inhibitory effect on several laundry pathogens, such as Acinetobacter sp., Pseudomonas aeruginosa, and Candida albicans. Using a standard laundering program and 15 g of Ag/Cu-CTS composite beads, the antibacterial rates reached 99.9%, and no silver emission was detected, thereby satisfying the Chinese requirement for washing machines. After 160 runs of laundering tests, this composite still has an excellent antibacterial effect. For the first time, chitosan is successfully applied as an antibacterial material on household electric appliances.
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7
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Izadpanah Ostad M, Niknam Shahrak M, Galli F. The effect of different reaction media on photocatalytic activity of Au- and Cu-decorated zeolitic imidazolate Framework-8 toward CO2 photoreduction to methanol. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2022.123514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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8
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Selective Electroless Copper Plating of Ink-Jet Printed Textiles Using a Copper-Silver Nanoparticle Catalyst. Polymers (Basel) 2022; 14:polym14173467. [PMID: 36080541 PMCID: PMC9460719 DOI: 10.3390/polym14173467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 08/18/2022] [Accepted: 08/19/2022] [Indexed: 11/16/2022] Open
Abstract
The electroless copper plating of textiles, which have been previously printed with a catalyst, is a promising method to selectively metallise them to produce high-reliability e-textiles, sensors and wearable electronics with wide-ranging applications in high-value sectors such as healthcare, sport, and the military. In this study, polyester textiles were ink-jet printed using differing numbers of printing cycles and printing directions with a functionalised copper–silver nanoparticle catalyst, followed by electroless copper plating. The catalyst was characterised using Transmission Electron Microscopy (TEM) and Ultraviolet/Visible (UV/Vis) spectroscopy. The electroless copper coatings were characterised by copper mass gain, visual appearance and electrical resistance in addition to their morphology and the plating coverage of the fibres using Scanning Electron Microscopy (SEM). Stiffness, laundering durability and colour fastness of the textiles were also analysed using a stiffness tester and Launder Ometer, respectively. The results indicated that in order to provide a metallised pattern with the desired conductivity, stiffness and laundering durability for e-textiles, the printing design, printing direction and the number of printing cycles of the catalyst should be carefully optimised considering the textile’s structure. Achieving a highly conductive complete copper coating, together with an almost identical and sufficiently low stiffness on both sides of the textile can be considered as useful indicators to judge the suitability of the process.
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9
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Synthesis and characterization of PVA embedded with peanut-shaped AgcAus nanoparticles: optical and electrical properties. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-022-04396-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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10
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Lemke P, Jünemann L, Moerschbacher BM. Synergistic Antimicrobial Activities of Chitosan Mixtures and Chitosan–Copper Combinations. Int J Mol Sci 2022; 23:ijms23063345. [PMID: 35328766 PMCID: PMC8951000 DOI: 10.3390/ijms23063345] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Revised: 03/16/2022] [Accepted: 03/18/2022] [Indexed: 02/06/2023] Open
Abstract
Several recent studies revealed the significant contribution of intensive agriculture to global climate change and biodiversity decline. However, synthetic pesticides and fertilizers, which are among the main reasons for these negative effects, are required to achieve the high performance of elite crops needed to feed the growing world population. Modern agro-biologics, such as biopesticides, biostimulants, and biofertilizers are intended to replace or reduce the current agro-chemicals, but the former are often difficult to combine with the latter. Chitosans, produced from the fisheries’ byproduct chitin, are among the most promising agro-biologics, and copper fungicides are among the most widely used plant protectants in organic farming. However, the two active ingredients tend to form precipitates, hindering product development. Here, we show that partial hydrolysis of a chitosan polymer can yield a mixture of smaller polymers and oligomers that act synergistically in their antifungal activity. The low molecular weight (Mw) of this hydrolysate allows its combination with copper acetate, again leading to a synergistic effect. Combined, these synergies allow a 50% reduction in copper concentration, while maintaining the antifungal activity. This is potentially a significant step towards a more sustainable agriculture.
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11
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Singh A, Verma A, Singh R, Sahoo AK, Samanta SK. Combination therapy of biogenic C-dots and lysozyme for enhanced antibacterial and antibiofilm activity. NANOTECHNOLOGY 2021; 32:085104. [PMID: 33080579 DOI: 10.1088/1361-6528/abc2ed] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Nearly 80% of human chronic infections are caused due to bacterial biofilm formation. The increased resistance against the conventional antimicrobial agents makes it difficult to treat the biofilm-related infections. The antibiotics resistance developed by planktonic cells has also become a major threat for human. Therefore, we have attempted here to develop an effective alternative strategy to overcome the issues of antibiotics resistance of bacteria. Upon synthesis, biogenic C-dots were combined with lysozymes which were further encapsulated into chitosan nanocarrier to form C-dots carrier (CDC). The as-synthesized C-dots were found irregular shaped and the average size of C-dots and CDC were 8 ± 2 nm and 450 ± 50 nm, respectively. To ensure secure and targeted delivery of C-dots and lysozyme we have employed chitosan, a biodegradable and natural biopolymer, as a delivery system. The study of time-dependent bacterial growth and flow cytometry analysis demonstrated that CDC can exhibit a synergistic bactericidal activity against the antibiotics resistant recombinant E. coli cells. Further, we have shown that the CDC could be a potent agent for both prevention of biofilm formation and eradication of preformed biofilm. In addition, we have observed that our drug delivery system is hemocompatible in nature making it suitable for in vivo applications. Therefore, we believe that the combination therapy of C-dots and lysozyme may be used as an excellent antibacterial and antibiofilm strategy.
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Affiliation(s)
- Anirudh Singh
- Department of Applied Sciences, Indian Institute of Information Technology Allahabad, Allahabad-211012, Uttar Pradesh, India
| | - Arushi Verma
- Department of Applied Sciences, Indian Institute of Information Technology Allahabad, Allahabad-211012, Uttar Pradesh, India
| | - Ruhar Singh
- School of Computational & Integrative Sciences, Jawaharlal Nehru University, New Delhi-110067, India
| | - Amaresh Kumar Sahoo
- Department of Applied Sciences, Indian Institute of Information Technology Allahabad, Allahabad-211012, Uttar Pradesh, India
| | - Sintu Kumar Samanta
- Department of Applied Sciences, Indian Institute of Information Technology Allahabad, Allahabad-211012, Uttar Pradesh, India
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Fan X, Yahia L, Sacher E. Antimicrobial Properties of the Ag, Cu Nanoparticle System. BIOLOGY 2021; 10:137. [PMID: 33578705 PMCID: PMC7916421 DOI: 10.3390/biology10020137] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Revised: 02/03/2021] [Accepted: 02/07/2021] [Indexed: 12/11/2022]
Abstract
Microbes, including bacteria and fungi, easily form stable biofilms on many surfaces. Such biofilms have high resistance to antibiotics, and cause nosocomial and postoperative infections. The antimicrobial and antiviral behaviors of Ag and Cu nanoparticles (NPs) are well known, and possible mechanisms for their actions, such as released ions, reactive oxygen species (ROS), contact killing, the immunostimulatory effect, and others have been proposed. Ag and Cu NPs, and their derivative NPs, have different antimicrobial capacities and cytotoxicities. Factors, such as size, shape and surface treatment, influence their antimicrobial activities. The biomedical application of antimicrobial Ag and Cu NPs involves coating onto substrates, including textiles, polymers, ceramics, and metals. Because Ag and Cu are immiscible, synthetic AgCu nanoalloys have different microstructures, which impact their antimicrobial effects. When mixed, the combination of Ag and Cu NPs act synergistically, offering substantially enhanced antimicrobial behavior. However, when alloyed in Ag-Cu NPs, the antimicrobial behavior is even more enhanced. The reason for this enhancement is unclear. Here, we discuss these results and the possible behavior mechanisms that underlie them.
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Affiliation(s)
- Xinzhen Fan
- Laboratoire d’Innovation et d’Analyse de Bioperformance, Département de Génie Mécanique, Polytechnique Montréal, CP 6079, Succursale C-V, Montréal, QC H3C 3A7, Canada; (X.F.); (L.Y.)
| | - L’Hocine Yahia
- Laboratoire d’Innovation et d’Analyse de Bioperformance, Département de Génie Mécanique, Polytechnique Montréal, CP 6079, Succursale C-V, Montréal, QC H3C 3A7, Canada; (X.F.); (L.Y.)
| | - Edward Sacher
- Département de Génie Physique, Polytechnique Montréal, CP 6079, Succursale C-V, Montréal, QC H3C 3A7, Canada
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Prajapati JP, Das D, Katlakunta S, Maramu N, Ranjan V, Mallick S. Synthesis and characterization of ultrasmall Cu2O nanoparticles on silica nanoparticles surface. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2020.120069] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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14
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Wu S, Wang S, Zhu M, Gao E. SYNTHESIS, CHARACTERIZATION, DNA BINDING,
AND ANTICANCER ABILITY OF A Co(II) COMPLEX CONSTRUCTED
BY 2-PROPYL-1H-IMIDAZOLE-4,5-DICARBOXYLIC ACID. J STRUCT CHEM+ 2020. [DOI: 10.1134/s0022476620120112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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15
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Sabira SF, Kasabe AM, Mane PC, Chaudhari RD, Adhyapak PV. Selective antifungal and antibacterial activities of Ag-Cu and Cu-Ag core-shell nanostructures synthesized in-situ PVA. NANOTECHNOLOGY 2020; 31:485705. [PMID: 32554903 DOI: 10.1088/1361-6528/ab9da5] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A simple chemical reduction method was employed to synthesize Cu-Ag and Ag-Cu core-shell nanostructures inside polyvinyl alcohol (PVA) matrix at room temperature. The core-shell nanostructures have been synthesized by varying the two different concentrations (i.e. 0.1 and 0.01 M) of the respective metal ions in equimolar ratios using successive reduction with hydrazine hydrate (HH) as a reducing agent. The core-shell nanostructures have been further characterized by different characterization techniques. The UV-visible spectroscopy exhibit the respective shift in the band positions suggesting the formation of core-shell nanostructures, which was further confirmed by field emission transmission electron microscopy-high-angle-annular dark field elemental mapping. The effect of metal ion concentration of the core-shell nanostructure on various Gram positive and Gram negative bacteria like Escherichia coli, Staphylococcus aureus, Klebsiella pneumoniae, Pseudomonas aeruginosa and one fungal species Aspergillus fumigatus was observed by performing MIC and MBC/MFC study. Cu-Ag core-shell nanostructures were found to be effective antibacterial agent against all tested Gram-positive and Gram-negative bacteria, whereas Ag-Cu core-shell nanostructures were more efficient against a particular fungal species known as A. fumigatus. The highest value of MIC (75 µg ml-1) for Ag-Cu 0.1M core shell nanostructures (D1) was noted against S. aureus and E. coli whereas the lowest value (20 µg ml-1) was observed with P. aeruginosa. While in case of Cu-Ag 0.1M core shell nanostructures (E1) the highest value of MIC (100 µg ml-1) was noted against S. aureus and P. aeruginosa whereas the lowest value (15 µg ml-1) was observed with A. fumigatus. Also, field effect scanning electron microscope (FESEM) images of untreated and core-shell nanoparticles treated micro-organisms showed that 0.1 M Ag-Cu and 0.1 M Cu-Ag core-shell nanostructure can successfully break the cell wall of the fungi A. fumigatus and bacteria P. aeruginosa, respectively. Thus the present study concludes that, Cu-Ag & Ag-Cu core-shell nanostructures damage the cell structure of micro-organisms and inhibits their growth. Hence, the present Cu-Ag & Ag-Cu core-shell nanostructure acts as good antimicrobial agent against the bacteria and fungi, respectively.
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Affiliation(s)
- Syed Farhat Sabira
- Centre for Materials for Electronics Technology, Panchawati, Pashan Road, Pune 411008, India
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16
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Verma A, Shivalkar S, Sk MP, Samanta SK, Sahoo AK. Nanocomposite of Ag nanoparticles and catalytic fluorescent carbon dots for synergistic bactericidal activity through enhanced reactive oxygen species generation. NANOTECHNOLOGY 2020; 31:405704. [PMID: 32498056 DOI: 10.1088/1361-6528/ab996f] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Microwave mediated synthesis of catalytic fluorescent carbon dots (Cdots) has been reported using biodegradable starch as precursor. The as-synthesized Cdots were then characterized using various techniques such as fluorescence spectroscopy, fourier-transform infrared spectroscopy (FT-IR), transmission electron microscopy (TEM) and x-ray photoelectron spectroscopy (XPS) analysis. Interestingly, Cdots showed high catalytic activity in the photo-reduction of Ag+ to silver nanoparticles (Ag NPs). During the photo-reduction process, no additional surface passivating agents was needed to stabilize the Ag NPs. Further, TEM results indicated the formation of Cdot-Ag NP nanocomposite i.e. Ag NPs surrounded with Cdots, and the emission intensity of Cdots was significantly decreased whereas the lifetime of Cdots remained almost unaltered in the presence of Ag NPs following static quenching. Finally, combination therapy of Cdots and Ag NPs using Cdot-Ag NP nanocomposite was performed which indicated synergistic bactericidal activity against antibiotic resistant recombinant E. coli bacteria. The treatment elevated the reactive oxygen species (ROS) level as compared to its individual components. Additionally, the flow cytometer study demonstrated that combination therapy causing bacterial cell wall perforation that was possibly leading to synergistic bactericidal activity against both Gram positive and Gram negative bacteria. The presence of Cdots on the surface of the Ag NPs due to their ground state complexation, possibly facilitated electrons towards Ag NPs which enhanced the ROS production in comparison to only Ag NPs.
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Affiliation(s)
- Arushi Verma
- Department of Applied Sciences, Indian Institute of Information Technology Allahabad, Allahabad 211012, Uttar Pradesh, India
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17
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Li J, Zhuang S. Antibacterial activity of chitosan and its derivatives and their interaction mechanism with bacteria: Current state and perspectives. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2020.109984] [Citation(s) in RCA: 157] [Impact Index Per Article: 39.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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18
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Kholiya F, Chatterjee S, Bhojani G, Sen S, Barkume M, Kasinathan NK, Kode J, Meena R. Seaweed polysaccharide derived bioaldehyde nanocomposite: Potential application in anticancer therapeutics. Carbohydr Polym 2020; 240:116282. [PMID: 32475566 DOI: 10.1016/j.carbpol.2020.116282] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Revised: 04/09/2020] [Accepted: 04/09/2020] [Indexed: 02/05/2023]
Abstract
In the present study, we have demonstrated synthesis of agar aldehyde (Aald) from seaweed polysaccharide and its further successful application for preparation of Aald mediated solid silver nanocomposite (Aald-AgNPs). Aald-AgNPs were characterized for biophysical properties by FTIR, XRD, SEM, TEM, XPS, and UV-vis spectroscopy. Aald-AgNPs were further tested in vitro and in vivo for anticancer activity. The results of the in vitro study revealed that Aald-AgNPs exhibited activity against 3 cancer cell lines. Aald-AgNPs were found to act through causing dose dependent increase in cell size, inducing anueploidy, mitochondrial disintegration and increasing septa formation in cell cytoplasm. Results of in vivo anticancer activity against ME-180, Colon-26, and HL-60 xenograft mice tumor models showed 64 %, 27.3 % and 51 % reduction in tumor volume, respectively with 83-100 % survival rate. Aald-AgNPs exhibited excellent antibacterial activity. It was interesting to note that Aald-AgNPs did not exhibit any significant detrimental effect on viability and metabolic activity of normal bone marrow derived mesenchymal stem cells. This study opens new areas of research for chemists and biologists to use seaweed-derived polymers to develop nanocomposites for cancer therapeutics.
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Affiliation(s)
- Faisal Kholiya
- Natural Products & Green Chemistry Division, CSIR-Central Salt & Marine Chemicals Research Institute, G. B Marg, Bhavnagar, 364002, Gujarat, India
| | - Shruti Chatterjee
- Division of Biotechnology and Phycology, CSIR-Central Salt & Marine Chemicals Research Institute, G. B Marg, Bhavnagar, 364002, Gujarat, India
| | - Gopal Bhojani
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Subrata Sen
- Anti-Cancer Drug Screening Facility, Advanced Centre for Treatment, Research & Education in Cancer (ACTREC), Tata Memorial Centre, Navi Mumbai, 410210, India
| | - Madan Barkume
- Anti-Cancer Drug Screening Facility, Advanced Centre for Treatment, Research & Education in Cancer (ACTREC), Tata Memorial Centre, Navi Mumbai, 410210, India
| | - Nirmal Kumar Kasinathan
- Anti-Cancer Drug Screening Facility, Advanced Centre for Treatment, Research & Education in Cancer (ACTREC), Tata Memorial Centre, Navi Mumbai, 410210, India
| | - Jyoti Kode
- Anti-Cancer Drug Screening Facility, Advanced Centre for Treatment, Research & Education in Cancer (ACTREC), Tata Memorial Centre, Navi Mumbai, 410210, India; Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai, 400094, India.
| | - Ramavatar Meena
- Natural Products & Green Chemistry Division, CSIR-Central Salt & Marine Chemicals Research Institute, G. B Marg, Bhavnagar, 364002, Gujarat, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India.
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19
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Zhou M, Wang Z, Sun Q, Wang J, Zhang C, Chen D, Li X. High-Performance Ag-Cu Nanoalloy Catalyst for the Selective Catalytic Oxidation of Ammonia. ACS APPLIED MATERIALS & INTERFACES 2019; 11:46875-46885. [PMID: 31763815 DOI: 10.1021/acsami.9b16349] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
High-performance Ag-Cu alloy nanoparticles (NPs) were successfully synthesized by a solventless mix-bake-wash method and tested for NH3-SCO. The prepared Ag2Cu1 catalyst with a perfect Ag-Cu alloy structure exhibited better T100 (200 °C, the temperature at which 100% NH3 conversion was obtained), higher reaction rates, and lower Ea compared to that with ordinary bimetallic Ag-Cu (AgCuOx). The characterization data revealed much smaller Ag-Cu alloy nanoparticles of the Ag2Cu1 catalyst and more Ag/Cu metallic species on the surface, which can increase the amount of chemisorbed surface oxygen (Oβ) and enhance NH3 adsorption and activation in the low-temperature range, therefore leading to a much higher NH3-SCO activity. Kinetic studies and density functional theory calculations indicated that Cu decoration at Ag by Ag-Cu alloying could enhance the adsorption/activation of NH3 and O2. It has been found that O2 was more easily transformed from the adsorption state to the transition state than NH3, which enhanced the performance of NH3 oxidation. In addition, the Ag2Cu1 catalyst exhibited excellent durability because of the stabilization of Ag sites by the Ag-Cu alloy structure.
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Affiliation(s)
- Mingdong Zhou
- School of Chemistry and Materials Science , Liaoning Shihua University , Fushun 113001 , P.R. China
| | - Zhong Wang
- School of Chemistry and Materials Science , Liaoning Shihua University , Fushun 113001 , P.R. China
- Key Laboratory of Biofuels, Qingdao Institute of Bioenergy and Bioprocess Technology , Chinese Academy of Sciences , Qingdao 266101 , P.R. China
| | - Qiang Sun
- School of Chemistry and Materials Science , Liaoning Shihua University , Fushun 113001 , P.R. China
| | - Jingyun Wang
- School of Chemistry and Materials Science , Liaoning Shihua University , Fushun 113001 , P.R. China
| | - Chuanhui Zhang
- Institute of Materials for Energy and Environment , Qingdao University , Qingdao 266071 , P.R. China
| | - Dan Chen
- College of Environmental Science and Engineering , Yangzhou University , Yangzhou 225127 , P.R. China
| | - Xuebing Li
- Key Laboratory of Biofuels, Qingdao Institute of Bioenergy and Bioprocess Technology , Chinese Academy of Sciences , Qingdao 266101 , P.R. China
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Bankar SR. Recyclable Heterogeneous Fe-Mo Nanocatalyst: Application in Solvent Free Synthesis of β-enaminones. CURRENT ORGANOCATALYSIS 2019. [DOI: 10.2174/2213337206666190415125053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
<P>Background: In recent years, green organic transformation has become a challenge for a
chemist in areas like social sector, health, and environment. Literature survey revealed that a nano
magnetite supported heterogeneous catalysis is an emergent field with huge application in chemical
synthesis.
</P><P>
Objective: In the present article, the aim was to develop a simple and facile method to carry organic
reaction under benign media. So, the focus was on the synthesis of nano-magnetite supported molybdenum
catalyst and its application in β-enaminones synthesis.
</P><P>
Methods: Magnetically recyclable heterogeneous ferrite-molybdenum catalyst was prepared by simple
impregnation method. The synthesized nanocatalyst Fe-Mo was well analysed by spectroscopic
techniques like X-ray diffraction analysis, X-ray photoelectron spectroscopy, transmission electron
microscopy, field-emission gun scanning electron microscopy and vibrating-sample magnetometry.
The functionalized nanocatalyst Fe-Mo was employed in the synthesis of β-enaminones under solvent
free condition.
</P><P>
Results: The competency of synthesized nanocatalyst-Fe-Mo was observed to be good for the synthesis
of β-enaminones derivatives under microwave irradiation and gave excellent yield (86-96%) of
the product. The catalyst was recycled for more than five consecutive runs without significant loss in
its activity.
</P><P>
Conclusion: In the present research article, synthesis of highly active, magnetically recyclable Fe-
Mo nanocatalyst was obtained from easily available precursor. The MNP was stable under investigated
conditions and effective in β-enaminones synthesis. The simple eco-friendly method, low catalyst
loading, short transformation time, and reusability of the catalyst thoroughly follow the sustainable
protocol.</P>
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Affiliation(s)
- Swapnil R. Bankar
- Rayat Shikshan Sanstha's, P. G. and Research Centre, Department of Chemistry, S.S.G.M. College, Kopargaon, Dist. - Ahmednagar (MS) 423601, India
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21
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Rout L, Kumar A, Chand PK, Achary LSK, Dash P. Microwave‐Assisted Efficient One‐Pot Multi‐Component Synthesis of Octahydroquinazolinone Derivatives Catalyzed by Cu@Ag Core‐Shell Nanoparticle. ChemistrySelect 2019. [DOI: 10.1002/slct.201900619] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Lipeeka Rout
- Department of ChemistryNational Institute of Technology, Rourkela, Odisha India, 769008
- Department of Polymer Science and EngineeringPusan National University, Busan 46241 Republic of Korea
| | - Aniket Kumar
- Department of ChemistryNational Institute of Technology, Rourkela, Odisha India, 769008
- School of Materials Science and EngineeringChonnam National University, Gwang-Ju Republic of Korea
| | - Pradyumna K Chand
- Department of ChemistryNational Institute of Technology, Rourkela, Odisha India, 769008
| | - L Satish K Achary
- Department of ChemistryNational Institute of Technology, Rourkela, Odisha India, 769008
| | - Priyabrat Dash
- Department of ChemistryNational Institute of Technology, Rourkela, Odisha India, 769008
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22
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Zhu MC, Wang N, Meng B, Su JQ, Peng TT, Qi ZZ, Jia B, Feng YH, Gao EJ. Two Ho(III) and Co(II) complexes constructed from bis(triazol-1-yl)benzoic acid with structurally similar carboxyl ligands: Syntheses, structures and biological activities. Appl Organomet Chem 2018. [DOI: 10.1002/aoc.4571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Ming-Chang Zhu
- Key Laboratory of Inorganic Molecule-Based Chemistry of Liaoning Province and Laboratory of Coordination Chemistry; Shenyang University of Chemical Technology; Shenyang 110142 China
| | - Ning Wang
- Key Laboratory of Inorganic Molecule-Based Chemistry of Liaoning Province and Laboratory of Coordination Chemistry; Shenyang University of Chemical Technology; Shenyang 110142 China
| | - Bo Meng
- Key Laboratory of Inorganic Molecule-Based Chemistry of Liaoning Province and Laboratory of Coordination Chemistry; Shenyang University of Chemical Technology; Shenyang 110142 China
| | - Jun-qi Su
- Key Laboratory of Inorganic Molecule-Based Chemistry of Liaoning Province and Laboratory of Coordination Chemistry; Shenyang University of Chemical Technology; Shenyang 110142 China
| | - Ting-ting Peng
- Key Laboratory of Inorganic Molecule-Based Chemistry of Liaoning Province and Laboratory of Coordination Chemistry; Shenyang University of Chemical Technology; Shenyang 110142 China
| | - Zhen-zhen Qi
- Key Laboratory of Inorganic Molecule-Based Chemistry of Liaoning Province and Laboratory of Coordination Chemistry; Shenyang University of Chemical Technology; Shenyang 110142 China
| | - Bing Jia
- Key Laboratory of Inorganic Molecule-Based Chemistry of Liaoning Province and Laboratory of Coordination Chemistry; Shenyang University of Chemical Technology; Shenyang 110142 China
| | - Yun-hui Feng
- Key Laboratory of Inorganic Molecule-Based Chemistry of Liaoning Province and Laboratory of Coordination Chemistry; Shenyang University of Chemical Technology; Shenyang 110142 China
| | - En-Jun Gao
- Key Laboratory of Inorganic Molecule-Based Chemistry of Liaoning Province and Laboratory of Coordination Chemistry; Shenyang University of Chemical Technology; Shenyang 110142 China
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23
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Nie J, Patrocinio AOT, Hamid S, Sieland F, Sann J, Xia S, Bahnemann DW, Schneider J. New insights into the plasmonic enhancement for photocatalytic H2 production by Cu–TiO2 upon visible light illumination. Phys Chem Chem Phys 2018; 20:5264-5273. [DOI: 10.1039/c7cp07762a] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Cu nanoparticles were deposited on the surface of commercial TiO2 nanoparticles (Cu–TiO2) using different methods aiming at the production of highly efficient visible light photocatalysts.
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Affiliation(s)
- J. Nie
- Key Laboratory of Marine Chemistry Theory and Technology
- Ministry of Education
- College of Chemistry and Chemical Engineering
- Ocean University of China
- 266100 Qingdao
| | - A. O. T. Patrocinio
- Institut für Technische Chemie
- Leibniz Universität Hannover
- D-30167 Hannover
- Germany
- Laboratory of Photochemistry and Materials Science
| | - S. Hamid
- Institut für Technische Chemie
- Leibniz Universität Hannover
- D-30167 Hannover
- Germany
| | - F. Sieland
- Institut für Technische Chemie
- Leibniz Universität Hannover
- D-30167 Hannover
- Germany
| | - J. Sann
- Justus-Liebig-University Giessen
- Institute of Physical Chemistry
- 35392 Giessen
- Germany
| | - S. Xia
- Key Laboratory of Marine Chemistry Theory and Technology
- Ministry of Education
- College of Chemistry and Chemical Engineering
- Ocean University of China
- 266100 Qingdao
| | - D. W. Bahnemann
- Institut für Technische Chemie
- Leibniz Universität Hannover
- D-30167 Hannover
- Germany
- Laboratory “Photoactive Nanocomposite Materials”
| | - J. Schneider
- Institut für Technische Chemie
- Leibniz Universität Hannover
- D-30167 Hannover
- Germany
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24
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Qadri S, Haik Y, Mensah-Brown E, Bashir G, Fernandez-Cabezudo MJ, al-Ramadi BK. Metallic nanoparticles to eradicate bacterial bone infection. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2017; 13:2241-2250. [DOI: 10.1016/j.nano.2017.05.013] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2016] [Revised: 04/20/2017] [Accepted: 05/24/2017] [Indexed: 10/19/2022]
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25
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Huang S, Wang J, Zhang Y, Yu Z, Qi C. Quaternized Carboxymethyl Chitosan-Based Silver Nanoparticles Hybrid: Microwave-Assisted Synthesis, Characterization and Antibacterial Activity. NANOMATERIALS 2016; 6:nano6060118. [PMID: 28335246 PMCID: PMC5302637 DOI: 10.3390/nano6060118] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/03/2016] [Revised: 05/24/2016] [Accepted: 06/01/2016] [Indexed: 12/13/2022]
Abstract
A facile, efficient, and eco-friendly approach for the preparation of uniform silver nanoparticles (Ag NPs) was developed. The synthesis was conducted in an aqueous medium exposed to microwave irradiation for 8 min, using laboratory-prepared, water-soluble quaternized carboxymethyl chitosan (QCMC) as a chemical reducer and stabilizer and silver nitrate as the silver source. The structure of the prepared QCMC was characterized using Fourier transform infrared (FT-IR) and 1H nuclear magnetic resonance (NMR). The formation, size distribution, and dispersion of the Ag NPs in the QCMC matrix were determined using X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), ultraviolet-visible (UV-Vis), transmission electron microscopy (TEM), and field emission scanning electron microscope (FESEM) analysis, and the thermal stability and antibacterial properties of the synthesized QCMC-based Ag NPs composite (QCMC-Ag) were also explored. The results revealed that (1) QCMC was successfully prepared by grafting quaternary ammonium groups onto carboxymethyl chitosan (CMC) chains under microwave irradiation in water for 90 min and this substitution appeared to have occurred at -NH2 sites on C2 position of the pyranoid ring; (2) uniform and stable spherical Ag NPs could be synthesized when QCMC was used as the reducing and stabilizing agent; (3) Ag NPs were well dispersed in the QCMC matrix with a narrow size distribiution in the range of 17–31 nm without aggregation; and (4) due to the presence of Ag NPs, the thermal stability and antibacterial activity of QCMC-Ag were dramatically improved relative to QCMC.
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Affiliation(s)
- Siqi Huang
- Beijing Key Laboratory of Wood Science and Engineering, Beijing Forestry University, Beijing 100083, China.
- MOE Key Laboratory of Wooden Material Science and Application, Beijing Forestry University, Beijing 100083, China.
| | - Jing Wang
- Beijing Key Laboratory of Wood Science and Engineering, Beijing Forestry University, Beijing 100083, China.
- MOE Key Laboratory of Wooden Material Science and Application, Beijing Forestry University, Beijing 100083, China.
| | - Yang Zhang
- Beijing Key Laboratory of Wood Science and Engineering, Beijing Forestry University, Beijing 100083, China.
- MOE Key Laboratory of Wooden Material Science and Application, Beijing Forestry University, Beijing 100083, China.
| | - Zhiming Yu
- Beijing Key Laboratory of Wood Science and Engineering, Beijing Forestry University, Beijing 100083, China.
- MOE Key Laboratory of Wooden Material Science and Application, Beijing Forestry University, Beijing 100083, China.
| | - Chusheng Qi
- Beijing Key Laboratory of Wood Science and Engineering, Beijing Forestry University, Beijing 100083, China.
- MOE Key Laboratory of Wooden Material Science and Application, Beijing Forestry University, Beijing 100083, China.
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26
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Wu C, Wang L, Fang Z, Hu Y, Chen S, Sugawara T, Ye X. The Effect of the Molecular Architecture on the Antioxidant Properties of Chitosan Gallate. Mar Drugs 2016; 14:E95. [PMID: 27187421 PMCID: PMC4882569 DOI: 10.3390/md14050095] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2016] [Revised: 05/04/2016] [Accepted: 05/09/2016] [Indexed: 11/23/2022] Open
Abstract
To elucidate the structure-antioxidant activity relationships of chitosan gallate (CG), a series of CG derivatives with different degrees of substitution (DS's) and molecular weights (MWs) were synthesized from chitosan (CS) and gallic acid (GA) via a free radical graft reaction. A higher MW led to a lower DS of CG. The structures of CG were characterized by FT-IR and ¹H NMR, and results showed that GA was mainly conjugated to the C-2 and C-6 positions of the CS chain. The antioxidant activity (the DPPH radical scavenging activity and reducing power) were enhanced with an increased DS and a decreased MW of CG. A correlation between antioxidant activities and the DS and MW of CG was also established. In addition, a suitable concentration (0~250 μg/mL) of CG with different MWs (32.78~489.32 kDa) and DS's (0~92.89 mg·GAE/g CG) has no cytotoxicity. These results should provide a guideline to the application of CG derivatives in food or pharmacology industries.
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Affiliation(s)
- Chunhua Wu
- College of Biosystems Engineering and Food Science, Fuli Institute of Food Science, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang R & D Center for Food Technology and Equipment, Zhejiang University, Hangzhou 310058, China.
- Division of Applied Biosciences, Graduate School of Agriculture, Kyoto University, Kyoto 6068502, Japan.
| | - Liping Wang
- College of Biosystems Engineering and Food Science, Fuli Institute of Food Science, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang R & D Center for Food Technology and Equipment, Zhejiang University, Hangzhou 310058, China.
| | - Zhongxiang Fang
- Faculty of Veterinary and Agricultural Sciences, the University of Melbourne, Parkville, Victoria 3010, Australia.
| | - Yaqin Hu
- College of Biosystems Engineering and Food Science, Fuli Institute of Food Science, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang R & D Center for Food Technology and Equipment, Zhejiang University, Hangzhou 310058, China.
| | - Shiguo Chen
- College of Biosystems Engineering and Food Science, Fuli Institute of Food Science, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang R & D Center for Food Technology and Equipment, Zhejiang University, Hangzhou 310058, China.
| | - Tatsuya Sugawara
- Division of Applied Biosciences, Graduate School of Agriculture, Kyoto University, Kyoto 6068502, Japan.
| | - Xingqian Ye
- College of Biosystems Engineering and Food Science, Fuli Institute of Food Science, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang R & D Center for Food Technology and Equipment, Zhejiang University, Hangzhou 310058, China.
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27
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Yuan W, Yuan J, Xie J, Li CM. Polymer-Mediated Self-Assembly of TiO2@Cu2O Core-Shell Nanowire Array for Highly Efficient Photoelectrochemical Water Oxidation. ACS APPLIED MATERIALS & INTERFACES 2016; 8:6082-6092. [PMID: 26908094 DOI: 10.1021/acsami.6b00030] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Phototoelectrochemical (PEC) water splitting represents a highly promising strategy to convert solar energy to chemical energy in the form of hydrogen, but its performance is severely limited by the water oxidation reaction. We conformally grew an ultrathin and continuous coating of Cu2O on TiO2 nanowire array (NWA) to form a truly core-shell TiO2@Cu2O NWA via a new facile, economical, and scalable polymer-mediated self-assembly approach, in which the polymer serves as a stabilizer, reductant, and linker simultaneously. This heteronanostructure was subsequently directly used as a photoanode for PEC water splitting, showing a photocurrent density of 4.66 mA cm(-2) at 1.23 V vs RHE in 0.5 M Na2SO4 solution and a maximum photoconversion efficiency of 0.71%, both of which are the highest reported for TiO2-based photoanodes measured under the same conditions (neutral conditions and without any sacrificial agent). The superior PEC performance of the TiO2@Cu2O NWA toward water oxidation is primarily due to much enhanced visible light collection and charge separation for high charge carrier density as well as greatly facilitated charge transfer and transport. This work not only offers a novel TiO2@Cu2O core-shell NWA photoanode for highly efficient PEC water oxidation and investigate its enhancement mechanism but also provides scientific insights into the mechanism of the polymer-mediated self-assembly, which can be further extended to fabricate various other core-shell nanoarchitectures for broad applications.
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Affiliation(s)
- Weiyong Yuan
- Institute for Clean energy & Advanced Materials, Faculty of Materials & Energy, Southwest University , Chongqing 400715, China
- Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies , Chongqing 400715, China
| | - Jia Yuan
- Institute for Clean energy & Advanced Materials, Faculty of Materials & Energy, Southwest University , Chongqing 400715, China
- Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies , Chongqing 400715, China
| | - Jiale Xie
- Institute for Clean energy & Advanced Materials, Faculty of Materials & Energy, Southwest University , Chongqing 400715, China
- Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies , Chongqing 400715, China
| | - Chang Ming Li
- Institute for Clean energy & Advanced Materials, Faculty of Materials & Energy, Southwest University , Chongqing 400715, China
- Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energies , Chongqing 400715, China
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28
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Rout L, Kumar A, Dhaka RS, Dash P. Bimetallic Ag–Cu alloy nanoparticles as a highly active catalyst for the enamination of 1,3-dicarbonyl compounds. RSC Adv 2016. [DOI: 10.1039/c6ra04569c] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Bimetallic Ag–Cu alloy nanoparticles were obtained via a simple co-reduction method, which exhibited significantly improved activity for the synthesis of β-enaminones and β-enaminoesters compared with their monometallic counterparts.
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Affiliation(s)
- Lipeeka Rout
- Department of Chemistry
- National Institute of Technology
- Rourkela
- India
| | - Aniket Kumar
- Department of Chemistry
- National Institute of Technology
- Rourkela
- India
| | - Rajendra S. Dhaka
- Novel Materials and Interface Physics Laboratory
- Department of Physics
- Indian Institute of Technology Delhi
- New Delhi-110016
- India
| | - Priyabrat Dash
- Department of Chemistry
- National Institute of Technology
- Rourkela
- India
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29
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Wang J, Shu M, Wang Y, Hu Y, Wang Y, Luo Y, Lin Z. Identification of potential CCR5 inhibitors through pharmacophore-based virtual screening, molecular dynamics simulation and binding free energy analysis. MOLECULAR BIOSYSTEMS 2016; 12:3396-3406. [DOI: 10.1039/c6mb00577b] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Employing the combined strategy to identify novel CCR5 inhibitors and provide a basis for rational drug design.
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Affiliation(s)
- Juan Wang
- Key Laboratory of Biorheological Science and Technology (Ministry of Education)
- Research Center of Bioinspired Material Science and Engineering
- Bioengineering College
- Chongqing University
- Chongqing 400044
| | - Mao Shu
- School of Pharmacy and Bioengineering
- Chongqing University of Technology
- Chongqing 400054
- China
| | - Yuanqiang Wang
- School of Pharmacy and Bioengineering
- Chongqing University of Technology
- Chongqing 400054
- China
| | - Yong Hu
- School of Pharmacy and Bioengineering
- Chongqing University of Technology
- Chongqing 400054
- China
| | - Yuanliang Wang
- Key Laboratory of Biorheological Science and Technology (Ministry of Education)
- Research Center of Bioinspired Material Science and Engineering
- Bioengineering College
- Chongqing University
- Chongqing 400044
| | - Yanfeng Luo
- Key Laboratory of Biorheological Science and Technology (Ministry of Education)
- Research Center of Bioinspired Material Science and Engineering
- Bioengineering College
- Chongqing University
- Chongqing 400044
| | - Zhihua Lin
- School of Pharmacy and Bioengineering
- Chongqing University of Technology
- Chongqing 400054
- China
- College of Chemistry and Chemical Engineering
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30
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Fang W, Chaofa Xu CX, Zheng J, Chen G, Jiang K. Fabrication of Cu–Ag bimetal nanotube-based copper silicates for enhancement of antibacterial activities. RSC Adv 2015. [DOI: 10.1039/c5ra06065f] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A novel Cu–Ag bimetal antibacterial system was developed, which showed higher antibacterial activities than single ones, and exhibited a synergistic effect.
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Affiliation(s)
- Weijun Fang
- College of Basic Medicine
- Anhui Medical University
- Hefei 230032
- P.R. China
| | - Chaofa Xu Chaofa Xu
- State Key Laboratory of Physical Chemistry of Solid Surfaces
- Xiamen University
- Xiamen 361005
- P.R. China
| | - Jun Zheng
- Center of Modern Experimental Technology
- Anhui University
- Hefei 230039
- P.R. China
| | - Guangjun Chen
- College of Basic Medicine
- Anhui Medical University
- Hefei 230032
- P.R. China
| | - Kong Jiang
- College of Basic Medicine
- Anhui Medical University
- Hefei 230032
- P.R. China
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31
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Liu X, Chen N, Gu JL, Du J, Yao KF. Novel Cu–Ag bimetallic porous nanomembrane prepared from a multi-component metallic glass. RSC Adv 2015. [DOI: 10.1039/c5ra08332j] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Cu–Ag bimetallic porous nanomembranes, prepared by chemical dealloying assisted with ultrasonic vibration, exhibit thicknesses of ∼5 to 50 nm, pore diameters of ∼10 to 20 nm and ligament feature sizes of ∼30 to 50 nm.
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Affiliation(s)
- Xue Liu
- Key Lab of Advanced Materials Processing Technology of Ministry of Education
- School of Materials Science and Engineering
- Tsinghua University
- Beijing 100084
- China
| | - Na Chen
- Key Lab of Advanced Materials Processing Technology of Ministry of Education
- School of Materials Science and Engineering
- Tsinghua University
- Beijing 100084
- China
| | - Jia-Lun Gu
- Key Lab of Advanced Materials Processing Technology of Ministry of Education
- School of Materials Science and Engineering
- Tsinghua University
- Beijing 100084
- China
| | - Jing Du
- Institute of Biomechanics and Medical Engineering
- Department of Engineering Mechanics
- Tsinghua University
- Beijing 100084
- China
| | - Ke-Fu Yao
- Key Lab of Advanced Materials Processing Technology of Ministry of Education
- School of Materials Science and Engineering
- Tsinghua University
- Beijing 100084
- China
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