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Zhu Z, He C, Sha J, Xiao K, Zhu L. Cation-exchange fibers and silver nanoparticles-modified carbon electrodes for selective removal of hardness ions and simultaneous deactivation of microorganisms in capacitive deionization. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 923:171318. [PMID: 38423341 DOI: 10.1016/j.scitotenv.2024.171318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2024] [Revised: 02/24/2024] [Accepted: 02/25/2024] [Indexed: 03/02/2024]
Abstract
The hardness and microorganism contamination are common problems of water quality around the world. Capacitive deionization (CDI) is a much-discussed solution to help solve the water crisis by providing efficient water softening while killing microorganism. Carboxylic (Na) cation-exchange fiber (CCEF) is an adsorbent material with good affinity for hardness ions. Silver nanoparticles (AgNPs) is a broad-spectrum microbicide. In this paper, the CCEF modified activated carbon (CCEF-AC) was used as cathode and showed excellent hardness ion adsorption selectivity at the optimum CCEF doping level (αCa2+/Na of 15.0, αMg2+/Na of 13.5). Its electrosorption capacity of Ca2+ reached 311 μmol/g, much higher than that of the AC cathode (188 μmol/g). It also showed good regenerable performance, retaining over 85 % of Ca2+ electrosorption capacity after 50 cycles stability test. The activated carbon modified with AgNPs (AC-Ag) was used as anode. When enhanced by an electric field, it could kill bacteria and microalgae with over 99 % and 90 % inhibition rates, respectively. This work has opened up a new way to simultaneously remove multiple pollutants (organic or inorganic) from water.
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Affiliation(s)
- Zhonghao Zhu
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Can He
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Jia Sha
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Kaijun Xiao
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China.
| | - Liang Zhu
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
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2
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Geng A, Han Y, Cao J, Cai C. Strong double networked hybrid cellulosic foam for passive cooling. Int J Biol Macromol 2024; 264:130676. [PMID: 38453107 DOI: 10.1016/j.ijbiomac.2024.130676] [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: 12/18/2023] [Revised: 03/03/2024] [Accepted: 03/04/2024] [Indexed: 03/09/2024]
Abstract
Up to now, energy conservation, emission reduction, and environmental protection are still the goals that humanity continuously pursues. Passive radiative cooling is a zero-consumption cooling technology, which gains more and more attention. However, the contraction between mechanical strength and cooling performance of traditional radiative cooling materials still limits their scalable production. In this work, we developed a strong double-networked hybrid cellulosic foam via crosslinking recyclable CNF and PVA with a silane coupling agent in the freeze-drying process. Meanwhile, nano zinc oxide and MOF were added to improve the mechanical and solar scattering of foam. Benefiting from the synergistic solar scattering of ZnO and MOF and the stable double crosslinking network, the as-prepared hybrid cellulosic foam exhibits high solar reflectivity of 0.965, high IR emissivity of 0.94, ultrahigh mechanical strength of and low thermal conductivity. Based on above results, the hybrid cellulosic foam shows high-performance daytime cooling efficiency of 7.5 °C under direct sunlight in the hot region (Nanjing, China), which can serve as outdoor thermal-regulation materials. This work demonstrates that biomass materials possess the enormous potential of in thermal regulating materials, and also provides great possibilities for their applications in energy conservation, environmental protection and green building materials.
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Affiliation(s)
- Aobo Geng
- Research Institute of Wood Industry, Chinese Academy of Forestry, Key Laboratory of Wood Science and Technology, National Forestry and Grassland Administration, Beijing 100091, China.
| | - Yanming Han
- Research Institute of Wood Industry, Chinese Academy of Forestry, Key Laboratory of Wood Science and Technology, National Forestry and Grassland Administration, Beijing 100091, China
| | - Jingyun Cao
- Research Institute of Wood Industry, Chinese Academy of Forestry, Key Laboratory of Wood Science and Technology, National Forestry and Grassland Administration, Beijing 100091, China
| | - Chenyang Cai
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing, Jiangsu 210037, China.
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3
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Al-Momani H, Massadeh MI, Almasri M, Al Balawi D, Aolymat I, Hamed S, Albiss BA, Ibrahim L, Balawi HA, Al Haj Mahmoud S. Anti-Bacterial Activity of Green Synthesised Silver and Zinc Oxide Nanoparticles against Propionibacterium acnes. Pharmaceuticals (Basel) 2024; 17:255. [PMID: 38399471 PMCID: PMC10891609 DOI: 10.3390/ph17020255] [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: 12/30/2023] [Revised: 02/10/2024] [Accepted: 02/13/2024] [Indexed: 02/25/2024] Open
Abstract
Propionibacterium acnes plays a critical role in the development of acne vulgaris. There has been a rise in the number of patients carrying P. acnes strains that are resistant to antibiotics. Thus, alternative anti-microbial agents are required. Zinc oxide (ZnO-NPs) and silver (Ag-NPs) nanoparticles can be used against several antibiotic-resistant bacteria. The impact of Ag-NPs and ZnO-NPs against two clinical strains of P. acnes, P1 and P2, and a reference strain, NCTC747, were investigated in this research. A chemical approach for the green synthesis of Ag-NPs and ZnO-NPs from Peganum harmala was employed. The microtiter plate method was used to examine the effects of NPs on bacterial growth, biofilm development, and biofilm eradication. A broth microdilution process was performed in order to determine minimal inhibitory (MIC) concentrations. Ag-NPs and ZnO-NPs had a spherical shape and average dimensions of 10 and 50 nm, respectively. MIC values for all P. acnes strains for Ag-NPs and ZnO-NPs were 125 µg/mL and 250 µg/mL, respectively. Ag-NP and ZnO-NP concentrations of 3.9- 62.5 µg/mL and 15-62.5 µg/mL significantly inhibited the growth and biofilm formation of all P. acnes strains, respectively. ZnO-NP concentrations of 15-62.5 μg/mL significantly inhibited the growth of NCTC747 and P2 strains. The growth of P1 was impacted by concentrations of 31.25 μg/mL and 62.5 μg/mL. Biofilm formation in the NCTC747 strain was diminished by a ZnO-NP concentration of 15 μg/mL. The clinical strains of P. acnes were only affected by ZnO-NP titres of more than 31.25 μg/mL. Established P. acne biofilm biomass was significantly reduced in all strains at a Ag-NP and ZnO-NP concentration of 62.5 µg/mL. The findings demonstrated that Ag-NPs and ZnO-NPs exert an anti-bacterial effect against P. acnes. Further research is required to determine their potential utility as a treatment option for acne.
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Affiliation(s)
- Hafez Al-Momani
- Department of Microbiology, Pathology and Forensic Medicine, Faculty of Medicine, The Hashemite University, Zarqa 13133, Jordan
| | - Muhannad I. Massadeh
- Department of Biology and Biotechnology, Faculty of Science, The Hashemite University, Zarqa 13115, Jordan; (M.I.M.); (M.A.)
| | - Muna Almasri
- Department of Biology and Biotechnology, Faculty of Science, The Hashemite University, Zarqa 13115, Jordan; (M.I.M.); (M.A.)
| | - Dua’a Al Balawi
- Faculty of Applied Medical Sciences, The Hashemite University, Zarqa 13133, Jordan
| | - Iman Aolymat
- Department of Anatomy, Physiology and Biochemistry, Faculty of Medicine, The Hashemite University, Zarqa 13133, Jordan;
| | - Saja Hamed
- Department of Pharmaceutical & Pharmaceutical Technology, Faculty of Pharmaceutical Sciences, The Hashemite University, Zarqa 13133, Jordan;
| | - Borhan Aldeen Albiss
- Nanotechnology Institute, Jordan University of Science & Technology, Irbid 22110, Jordan;
| | - Lugain Ibrahim
- Faculty of Applied Medical Sciences, The Hashemite University, Zarqa 13133, Jordan
| | - Hadeel Al Balawi
- Faculty of Applied Medical Sciences, The Hashemite University, Zarqa 13133, Jordan
| | - Sameer Al Haj Mahmoud
- Department of Basic Medical Science, Faculty of Medicine, Al-Balqa’ Applied University, AL-Salt 19117, Jordan;
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Iadrat P, Jongthong J, Prasertsab A, Thanphrom S, Toewiwat N, Ittisanronnachai S, Wongnate T, Wattanakit C. Nanocrystalline BEA-CNT Composites with High Metal Dispersion Obtained via Inter-Zeolite Transformation for Antibacterial Application. ACS APPLIED MATERIALS & INTERFACES 2023; 15:42854-42867. [PMID: 37652465 DOI: 10.1021/acsami.3c08467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
The rational design of interface materials containing carbon nanotubes (CNTs) and zeolites (zeolite-CNTs) is a promising perspective in chemical and biochemical communities because they exhibit several outstanding properties such as tunable hydrophobicity-hydrophilicity at interfaces. In this contribution, we report the fabrication of Ag-incorporated nanocrystalline BEA-carbon nanotube (CNT) composites via the one-pot inter-zeolite transformation of the micron-sized FAU-CNT composite in the presence of a Ag precursor. By varying the crystallization time, the inter-zeolite transformation mechanism was explored. Indeed, this process involves an amorphous intermediate of aluminosilicate species with a significant change of the crystal morphology in the presence of CNTs in the synthesis gel. Interestingly, the redispersion of metal particles was observed after the inter-zeolite transformation process, resulting in the high dispersion of metal nanoparticles over BEA nanocrystals. Notably, it was revealed that the Ag sites were also stabilized in the presence of CNT interfaces, leading to the availability of highly active Ag+ ions. To illustrate the beneficial aspect of designer materials, the synthesized Ag-incorporated BEA-CNT composites exhibited high antibacterial activity againstEscherichia coli due to the synergistic effect of the active Ag+ species and appropriate hydrophobic and hydrophilic properties of the hybrid material interfaces. This first example opens up perspectives of the rational design of zeolite-CNT interfaces with high metal dispersion via the inter-zeolite transformation approach for biomedical applications.
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Affiliation(s)
- Ploychanok Iadrat
- School of Molecular Science and Engineering (MSE), Vidyasirimedhi Institute of Science and Technology (VISTEC), Rayong 21210, Thailand
| | - Jananya Jongthong
- School of Energy Science and Engineering (ESE), Vidyasirimedhi Institute of Science and Technology (VISTEC), Rayong 21210, Thailand
| | - Anittha Prasertsab
- School of Energy Science and Engineering (ESE), Vidyasirimedhi Institute of Science and Technology (VISTEC), Rayong 21210, Thailand
| | - Sukonlaphat Thanphrom
- School of Energy Science and Engineering (ESE), Vidyasirimedhi Institute of Science and Technology (VISTEC), Rayong 21210, Thailand
| | - Neal Toewiwat
- School of Biomolecular Science and Engineering (BSE), Vidyasirimedhi Institute of Science and Technology (VISTEC), Rayong 21210, Thailand
| | - Somlak Ittisanronnachai
- Frontier Research Center (FRC), Vidyasirimedhi Institute of Science and Technology (VISTEC), Rayong 21210, Thailand
| | - Thanyaporn Wongnate
- School of Biomolecular Science and Engineering (BSE), Vidyasirimedhi Institute of Science and Technology (VISTEC), Rayong 21210, Thailand
| | - Chularat Wattanakit
- School of Energy Science and Engineering (ESE), Vidyasirimedhi Institute of Science and Technology (VISTEC), Rayong 21210, Thailand
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Zhao Y, Li B, Zhang W, Zhang L, Zhao H, Wang S, Huang C. Recent Advances in Sustainable Antimicrobial Food Packaging: Insights into Release Mechanisms, Design Strategies, and Applications in the Food Industry. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:11806-11833. [PMID: 37467345 DOI: 10.1021/acs.jafc.3c02608] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/21/2023]
Abstract
In response to the issues of foodborne microbial contamination and carbon neutrality goals, sustainable antimicrobial food packaging (SAFP) composed of renewable or biodegradable biopolymer matrices with ecofriendly antimicrobial agents has emerged. SAFP offers longer effectiveness, wider coverage, more controllability, and better environmental performance. Analyzing SAFP information, including the release profile of each antimicrobial agent for each food, the interaction of each biomass matrix with each food, the material size, form, and preparation methods, and its service quality in real foods, is crucial. While encouraging reports exist, a comprehensive review summarizing these developments is lacking. Therefore, this review critically examines recent release-antimicrobial mechanisms, kinetics models, preparation methods, and key regulatory parameters for SAFPs based on slow- or controlled-release theory. Furthermore, it discusses fundamental physicochemical characteristics, effective concentrations, advantages, release approaches, and antimicrobial and preservative effects of various materials in food simulants or actual food. Lastly, inadequacies and future trends are explored, providing practical references to regulate the movement of active substances in different media, reduce the reliance on petrochemical-based materials, and advance food packaging and preservation technologies.
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Affiliation(s)
- Yuan Zhao
- School of Light Industry & Food Engineering, Guangxi University, 100 Daxue Road, Nanning 530004, China
- Sichuan Key Laboratory of Conservation Biology for Endangered Wildlife, Chengdu Research Base of Giant Panda Breeding, Chengdu 610081, China
| | - Bo Li
- School of Light Industry & Food Engineering, Guangxi University, 100 Daxue Road, Nanning 530004, China
| | - Wenping Zhang
- Sichuan Key Laboratory of Conservation Biology for Endangered Wildlife, Chengdu Research Base of Giant Panda Breeding, Chengdu 610081, China
| | - Lanyu Zhang
- School of Light Industry & Food Engineering, Guangxi University, 100 Daxue Road, Nanning 530004, China
| | - Hui Zhao
- School of Light Industry & Food Engineering, Guangxi University, 100 Daxue Road, Nanning 530004, China
| | - Shuangfei Wang
- School of Light Industry & Food Engineering, Guangxi University, 100 Daxue Road, Nanning 530004, China
| | - Chongxing Huang
- School of Light Industry & Food Engineering, Guangxi University, 100 Daxue Road, Nanning 530004, China
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6
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T. M. Kadja G, T. U. Culsum N, Putri RM. Recent advances in the utilization of zeolite-based materials for controlled drug delivery. RESULTS IN CHEMISTRY 2023. [DOI: 10.1016/j.rechem.2023.100910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023] Open
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7
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Haghdoost F, Bahrami SH, Barzin J, Ghaee A. Development of biocompatible co-electrospun polyethersulfone/polyvinylpyrrolidone-Y zeolite hybrid nanofiber. INT J POLYM MATER PO 2022. [DOI: 10.1080/00914037.2022.2118274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Affiliation(s)
- Fatemeh Haghdoost
- Department of Textile Engineering, Amirkabir University of Technology, Tehran, Iran
| | - S. Hajir Bahrami
- Department of Textile Engineering, Amirkabir University of Technology, Tehran, Iran
| | - Jalal Barzin
- Department of Biomaterials, Iran Polymer and Petrochemical Institute, Tehran, Iran
| | - Azadeh Ghaee
- Department of Life Science Engineering, Faculty of New Sciences and Technologies, University of Tehran, Tehran, Iran
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Oheix E, Reicher C, Nouali H, Michelin L, Josien L, Daou TJ, Pieuchot L. Rational Design and Characterisation of Novel Mono- and Bimetallic Antibacterial Linde Type A Zeolite Materials. J Funct Biomater 2022; 13:jfb13020073. [PMID: 35735928 PMCID: PMC9224897 DOI: 10.3390/jfb13020073] [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: 05/04/2022] [Revised: 05/26/2022] [Accepted: 05/27/2022] [Indexed: 11/21/2022] Open
Abstract
The development of antimicrobial devices and surfaces requires the setup of suitable materials, able to store and release active principles. In this context, zeolites, which are microporous aluminosilicate minerals, hold great promise, since they are able to serve as a reservoir for metal-ions with antimicrobial properties. Here, we report on the preparation of Linde Type A zeolites, partially exchanged with combinations of metal-ions (Ag+, Cu2+, Zn2+) at different loadings (0.1–11.9 wt.%). We combine X-ray fluorescence, scanning electron microscopy, energy-dispersive X-ray spectroscopy, and X-ray diffraction to monitor the metal-ion contents, distribution, and conservation of the zeolite structure after exchange. Then, we evaluate their antimicrobial activity, using agar dilution and optical-density monitoring of Escherichia coli cultures. The results indicate that silver-loaded materials are at least 70-fold more active than the copper-, zinc-, and non-exchanged ones. Moreover, zeolites loaded with lower Ag+ concentrations remain active down to 0.1 wt.%, and their activities are directly proportional to the total Ag content. Sequential exchanges with two metal ions (Ag+ and either Cu2+, Zn2+) display synergetic or antagonist effects, depending on the quantity of the second metal. Altogether, this work shows that, by combining analytical and quantitative methods, it is possible to fine-tune the composition of bi-metal-exchanged zeolites, in order to maximise their antimicrobial potential, opening new ways for the development of next-generation composite zeolite-containing antimicrobial materials, with potential applications for the design of dental or bone implants, as well as biomedical devices and pharmaceutical products.
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Affiliation(s)
- Emmanuel Oheix
- Institut de Science des Matériaux de Mulhouse (IS2M), Université de Haute Alsace (UHA), CNRS, UMR 7361, 3 bis rue Alfred Werner, F-68093 Mulhouse, France; (E.O.); (C.R.); (H.N.); (L.M.); (L.J.)
- Université de Strasbourg (UniStra), F-67000 Strasbourg, France
| | - Chloé Reicher
- Institut de Science des Matériaux de Mulhouse (IS2M), Université de Haute Alsace (UHA), CNRS, UMR 7361, 3 bis rue Alfred Werner, F-68093 Mulhouse, France; (E.O.); (C.R.); (H.N.); (L.M.); (L.J.)
- Université de Strasbourg (UniStra), F-67000 Strasbourg, France
| | - Habiba Nouali
- Institut de Science des Matériaux de Mulhouse (IS2M), Université de Haute Alsace (UHA), CNRS, UMR 7361, 3 bis rue Alfred Werner, F-68093 Mulhouse, France; (E.O.); (C.R.); (H.N.); (L.M.); (L.J.)
- Université de Strasbourg (UniStra), F-67000 Strasbourg, France
| | - Laure Michelin
- Institut de Science des Matériaux de Mulhouse (IS2M), Université de Haute Alsace (UHA), CNRS, UMR 7361, 3 bis rue Alfred Werner, F-68093 Mulhouse, France; (E.O.); (C.R.); (H.N.); (L.M.); (L.J.)
- Université de Strasbourg (UniStra), F-67000 Strasbourg, France
| | - Ludovic Josien
- Institut de Science des Matériaux de Mulhouse (IS2M), Université de Haute Alsace (UHA), CNRS, UMR 7361, 3 bis rue Alfred Werner, F-68093 Mulhouse, France; (E.O.); (C.R.); (H.N.); (L.M.); (L.J.)
- Université de Strasbourg (UniStra), F-67000 Strasbourg, France
| | - T. Jean Daou
- Aptar CSP Technology, 9 rue du Sandholz, F-67110 Niederbronn les Bains, France
- Correspondence: (T.J.D.); (L.P.); Tel.: +33-389336739 (T.J.D.); +33-389608713 (L.P.)
| | - Laurent Pieuchot
- Institut de Science des Matériaux de Mulhouse (IS2M), Université de Haute Alsace (UHA), CNRS, UMR 7361, 3 bis rue Alfred Werner, F-68093 Mulhouse, France; (E.O.); (C.R.); (H.N.); (L.M.); (L.J.)
- Université de Strasbourg (UniStra), F-67000 Strasbourg, France
- Correspondence: (T.J.D.); (L.P.); Tel.: +33-389336739 (T.J.D.); +33-389608713 (L.P.)
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Mude H, Maroju PA, Balapure A, Ganesan R, Ray Dutta J. Quaternized Polydopamine Coatings for Anchoring Molecularly Dispersed Broad-Spectrum Antimicrobial Silver Salts. ACS APPLIED BIO MATERIALS 2021; 4:8396-8406. [PMID: 35005936 DOI: 10.1021/acsabm.1c00952] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Because of the broad-spectrum antimicrobial efficacy, silver-based coatings have emerged as the popular choice to apply over frequently touched surfaces for mitigating the spread of nosocomial infections. Despite the advancements through various coating strategies, clustering of the active component remains a bottleneck in achieving the molecular-scale dispersion of silver. To circumvent this, the current study takes advantage of the recent findings of quaternary ammonium moieties forming molecular complexes with silver salts that differ from the simple adduct between the individual components. Here we demonstrate the quaternization of oxidatively cross-linked polydopamine coatings over magnetite nanoparticles to anchor ionic silver at a molecular-scale dispersion. The silver-derivatized materials exhibit remarkable broad-spectrum antimicrobial properties against representative microbes like E. coli, S. aureus, and A. niger. Also, the study reveals the materials' antibiofilm efficacy (∼80-90%) against both bacteria. Further recyclability studies have proven the sustained bactericidal properties up to five cycles. The surface derivatization strategy has then been extended to cover glass slips that have also shown the retention of the bactericidal properties even after wiping 20 times with artificial sweat. The biocompatibility of the materials has been ascertained with treated water against the mouse fibroblast and human embryonic kidney cell lines. The current study offers insights in developing coatings with molecular-scale dispersion of ionic silver to achieve broad-spectrum antimicrobial properties in an atom-economical and sustainable manner.
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Affiliation(s)
- Hemanjali Mude
- Department of Biological Sciences, Birla Institute of Technology and Science (BITS), Pilani, Hyderabad Campus, Jawahar Nagar, Kapra Mandal, Medchal District, Hyderabad, Telangana 500078, India
| | - Pranay Amruth Maroju
- Department of Biological Sciences, Birla Institute of Technology and Science (BITS), Pilani, Hyderabad Campus, Jawahar Nagar, Kapra Mandal, Medchal District, Hyderabad, Telangana 500078, India
| | - Aniket Balapure
- Department of Chemistry, Birla Institute of Technology and Science (BITS), Pilani, Hyderabad Campus, Jawahar Nagar, Kapra Mandal, Medchal District, Hyderabad, Telangana 500078, India
| | - Ramakrishnan Ganesan
- Department of Chemistry, Birla Institute of Technology and Science (BITS), Pilani, Hyderabad Campus, Jawahar Nagar, Kapra Mandal, Medchal District, Hyderabad, Telangana 500078, India
| | - Jayati Ray Dutta
- Department of Biological Sciences, Birla Institute of Technology and Science (BITS), Pilani, Hyderabad Campus, Jawahar Nagar, Kapra Mandal, Medchal District, Hyderabad, Telangana 500078, India
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Wang Y, Sun H. Polymeric Nanomaterials for Efficient Delivery of Antimicrobial Agents. Pharmaceutics 2021; 13:2108. [PMID: 34959388 PMCID: PMC8709338 DOI: 10.3390/pharmaceutics13122108] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 11/29/2021] [Accepted: 12/03/2021] [Indexed: 12/12/2022] Open
Abstract
Bacterial infections have threatened the lives of human beings for thousands of years either as major diseases or complications. The elimination of bacterial infections has always occupied a pivotal position in our history. For a long period of time, people were devoted to finding natural antimicrobial agents such as antimicrobial peptides (AMPs), antibiotics and silver ions or synthetic active antimicrobial substances including antimicrobial peptoids, metal oxides and polymers to combat bacterial infections. However, with the emergence of multidrug resistance (MDR), bacterial infection has become one of the most urgent problems worldwide. The efficient delivery of antimicrobial agents to the site of infection precisely is a promising strategy for reducing bacterial resistance. Polymeric nanomaterials have been widely studied as carriers for constructing antimicrobial agent delivery systems and have shown advantages including high biocompatibility, sustained release, targeting and improved bioavailability. In this review, we will highlight recent advances in highly efficient delivery of antimicrobial agents by polymeric nanomaterials such as micelles, vesicles, dendrimers, nanogels, nanofibers and so forth. The biomedical applications of polymeric nanomaterial-based delivery systems in combating MDR bacteria, anti-biofilms, wound healing, tissue engineering and anticancer are demonstrated. Moreover, conclusions and future perspectives are also proposed.
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Affiliation(s)
- Yin Wang
- School of Public Health and Management, Ningxia Medical University, Yinchuan 750004, China;
| | - Hui Sun
- State Key Laboratory of High-Efficiency Coal Utilization and Green Chemical Engineering, Ningxia University, Yinchuan 750021, China
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11
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Zhu J, Lua AC. Antibacterial ultrafiltration membrane with silver nanoparticle impregnation by interfacial polymerization for ballast water. JOURNAL OF POLYMER SCIENCE 2021. [DOI: 10.1002/pol.20210365] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jianhua Zhu
- School of Mechanical and Aerospace Engineering Nanyang Technological University Singapore Singapore
| | - Aik Chong Lua
- School of Mechanical and Aerospace Engineering Nanyang Technological University Singapore Singapore
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Li Z, Gou M, Yue X, Tian Q, Yang D, Qiu F, Zhang T. Facile fabrication of bifunctional ZIF-L/cellulose composite membrane for efficient removal of tellurium and antibacterial effects. JOURNAL OF HAZARDOUS MATERIALS 2021; 416:125888. [PMID: 34492826 DOI: 10.1016/j.jhazmat.2021.125888] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 04/08/2021] [Accepted: 04/09/2021] [Indexed: 06/13/2023]
Abstract
Fabrication of simple and efficient adsorbents is greatly vital to satisfy the requirements of removal of tellurium in wastewater treatment, yet remains challenging. Here, a facile and cost-effective strategy to develop ZIF-L coated self-crosslinking cellulose membrane (ZIF-L/SC membrane) for tellurium adsorption was presented. In-situ vertical growth of ZIF-L nanoplates with functional properties on membrane substrate is an available strategy, effectively remedying deficiency of pure nanosized sorbent in agglomeration problem and unhandy recovery. The SC membrane formed by strong hydrogen bonding among cellulose fibers is an excellent substrate, due to the favorable mechanical strength and abundant hydroxyl groups. The as-prepared ZIF-L/SC membrane shows advantageous morphology of large contact surface, fine thermal stability and eligible mechanical strength. The adsorption performance and possible mechanism of ZIF-L/SC membrane for Te (IV) were investigated by diverse characterization methods, showing admirable adsorption effect. Furthermore, the ZIF-L/SC membrane has excellent antibacterial properties, thus it is expected to deal with membrane fouling caused by microorganism breeding. Therefore, the bifunctional ZIF-L/SC membrane with excellent antibacterial activity is anticipated to be a promising candidate for efficient tellurium adsorbents, and simultaneously have potential in various fields in the future.
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Affiliation(s)
- Zhangdi Li
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu Province, China
| | - Mei Gou
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu Province, China
| | - Xuejie Yue
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu Province, China
| | - Qiong Tian
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu Province, China
| | - Dongya Yang
- Institute of Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu Province, China
| | - Fengxian Qiu
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu Province, China; Institute of Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu Province, China.
| | - Tao Zhang
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu Province, China; Institute of Green Chemistry and Chemical Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu Province, China.
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Mani M, Okla MK, Selvaraj S, Ram Kumar A, Kumaresan S, Muthukumaran A, Kaviyarasu K, El-Tayeb MA, Elbadawi YB, Almaary KS, Ahmed Almunqedhi BM, Elshikh MS. A novel biogenic Allium cepa leaf mediated silver nanoparticles for antimicrobial, antioxidant, and anticancer effects on MCF-7 cell line. ENVIRONMENTAL RESEARCH 2021; 198:111199. [PMID: 33932479 DOI: 10.1016/j.envres.2021.111199] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 04/11/2021] [Accepted: 04/12/2021] [Indexed: 06/12/2023]
Abstract
In the present study, Allium cepa leaf extract was utilized to reduce the silver nitrate into the nanoscale range of silver ions (Ag NPs). The biosynthesized Ag NPs were extensively characterized by X-ray diffraction analysis (XRD), Dynamic light scattering analysis (DLS), UV-Visible spectroscopy (UV-vis), Transmission electron microscopy (TEM), Energy dispersive X-ray analysis (EDX) and Fourier transform infrared spectroscopy (FTIR). The antioxidant activity of synthesized Ag NPs was verified by DPPH assay. From the results obtained from XRD and DLS studies, the size of Ag NPs was determined to be around 54.3 nm. The measured zeta potential value of -19.1 mV confirms the excellent stability of biosynthesized Ag NPs. TEM analyses reveal that the biosynthesized Ag NPs have a spherical structure of 13 nm in size. The presence of various functional groups was confirmed through FTIR studies and EDAX verifies the weight percentage of silver content in biosynthesized nanoparticles to be 30.33%. In the present study, anti-cancer activity was carried out by using breast cancer cell line MCF-7. Further, silver nanoparticles exhibited antimicrobial effectiveness against gram-positive Bacillus cereus and gram-negative Escherichia coli. The MTT assay also showed better cytotoxic activity against the MCF- 7 cell line.
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Affiliation(s)
- M Mani
- Spectrophysics Research Laboratory, PG and Research Department of Physics, Arignar Anna Government Arts College, Cheyyar - 604407, Tamil Nadu, India
| | - Mohammad K Okla
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia.
| | - S Selvaraj
- Department of Science and Humanities, St. Joseph College of Engineering, Sriperumbudur - 602117, Chennai, Tamil Nadu, India
| | - A Ram Kumar
- PG and Research Department of Biochemistry, Indo- American College, Cheyyar - 604407, Tamil Nadu, India
| | - S Kumaresan
- Spectrophysics Research Laboratory, PG and Research Department of Physics, Arignar Anna Government Arts College, Cheyyar - 604407, Tamil Nadu, India
| | - Azhaguchamy Muthukumaran
- Department of Biotechnology, Kalasalingam Academy of Research and Education, Krishnankoil, Tamilnadu, India
| | - K Kaviyarasu
- UNESCO-UNISA Africa Chair in Nanosciences/Nanotechnology Laboratories, College of Graduate Studies, University of South Africa (UNISA), Muckleneuk Ridge, PO Box 392, Pretoria, South Africa; Nanosciences African Network (NANOAFNET), Materials Research Group (MRG), IThemba LABS-National Research Foundation (NRF), 1 Old Faure Road, 7129, PO Box 722, Somerset West, Western Cape Province, South Africa.
| | - Mohamed A El-Tayeb
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Yahya B Elbadawi
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Khalid S Almaary
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | | | - Mohamed Soliman Elshikh
- Department of Botany and Microbiology, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
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14
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Blevens MS, Pastrana HF, Mazzotta HC, Tsai CSJ. Cloth Face Masks Containing Silver: Evaluating the Status. ACS CHEMICAL HEALTH & SAFETY 2021; 28:171-182. [PMID: 37556257 PMCID: PMC8084270 DOI: 10.1021/acs.chas.1c00005] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Indexed: 12/03/2022]
Abstract
Amid the coronavirus disease 2019 pandemic, demand for cloth face masks containing nanosilver has increased. Common product claims such as "antiviral" and "antimicrobial" can be attractive to buyers seeking to protect themselves from this respiratory disease, but it is important to note that filtration capabilities are the main factor to prevent virus transmission and that antimicrobial ability is a secondary protection factor. Silver has long been known to be antibacterial, and growing research supports additional antiviral properties. In this study, 40 masks claiming to contain silver were evaluated for substantiated antiviral and antimicrobial claims using methods available to the public. Criteria for determining the validity of substantiated claims included the use of patented technology, international certification for antimicrobial and/or antiviral textile by ISO or ASTM, EPA pesticide registration, and peer-reviewed literature. Our analysis showed that, of the 40 masks, 21 had substantiated claims. Using scanning electron microscopy (SEM), two of the substantiated face masks (A and B) were examined for silver identification for further confirmation. Mask A uses silver and copper ions attached to zeolite particles; the zeolite particles discovered through SEM were approximately 90-200 nm in diameter. In mask B, particles of silver and titanium at the 250 nm size were found. In conclusion, these certifications or patents are not enough to determine credibility, and stricter regulations by federal agencies on product testing for manufacturers that make claims are necessary to ensure the efficacy of the product advertised, as well as a cloth face mask inhalation standard.
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Affiliation(s)
- Melissa S. Blevens
- Environmental Health, Department of Environmental and
Radiological Health Sciences, Colorado State University, 1681
Campus Delivery, Fort Collins, Colorado 80523, United States
| | - Homero F. Pastrana
- Facultad de Medicina, Grupo de Investigación en
Ciencias Biomédicas, Universidad Antonio Nariño,
Bogotá D.C., Colombia, 110231
| | - Hannah C. Mazzotta
- Colorado School of Public Health, Colorado
State University, 1612 Campus Delivery, Fort Collins, Colorado 80523,
United States
| | - Candace Su-Jung Tsai
- Environmental Health, Department of Environmental and
Radiological Health Sciences, Colorado State University, 1681
Campus Delivery, Fort Collins, Colorado 80523, United States
- Department of Environmental Health Sciences, Fielding
School of Public Health, University of California, Los Angeles,
650 Charles E. Young Drive South, Los Angeles, California 90095, United
States
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15
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Albarano L, Lofrano G, Costantini M, Zupo V, Carraturo F, Guida M, Libralato G. Comparison of in situ sediment remediation amendments: Risk perspectives from species sensitivity distribution. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 272:115995. [PMID: 33187838 DOI: 10.1016/j.envpol.2020.115995] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 10/27/2020] [Accepted: 11/02/2020] [Indexed: 06/11/2023]
Abstract
Contaminated sediment is a major issue for aquatic environments, but attention must be kept even during remediation activities that can negatively affect resident biota especially when applied in situ. For the first time, the species sensitivity distribution (SSD) approach was applied to amendments used for in situ sediment remediation considering 39 papers including both freshwater (F) and saltwater (S) effect data (i.e. n = 17 only F, n = 19 only S, and n = 3 both F and S). Toxicity data related to the application of activated carbon (AC), nano-Zero-Valent-Iron (nZVI), apatite (A), organoclay (OC) and zeolite (Z) were collected and analyzed. SSD curves were constructed by lognormal model providing comprehensive comparisons of the sensitivities of different species to the relative testing methods. Results indicated that Bacteria were the most sensitive group of testing organisms, while Crustaceans were the less sensitive. The hazardous concentration for 5% of the affected species (HC5) were derived to determine the concentration protecting 95% of the species. OC, A and Z presented both acute and chronic toxicity. The HC5 values in descending order are: AC (4.79 g/L) > nZVI (0.02 g/L) > OC, A and Z (1.77E-04 g/L). AC and nZVI can be considered safer than OC, A and Z in sediment remediation activities, even if in situ long-term effects remained still underexplored.
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Affiliation(s)
- L Albarano
- Department of Biology, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, Via Cinthia 21, 80126, Naples, Italy; Department of Marine Biotechnology, Stazione Zoologica Anton Dohrn, Villa Comunale, 80121, Napoli, Italy
| | - G Lofrano
- Centro Servizi Metrologici e Tecnologici Avanzati (CeSMA), Complesso Universitario di Monte Sant'Angelo, Via Cinthia 21, 80126, Naples, Italy
| | - M Costantini
- Department of Marine Biotechnology, Stazione Zoologica Anton Dohrn, Villa Comunale, 80121, Napoli, Italy
| | - V Zupo
- Department of Marine Biotechnology, Stazione Zoologica Anton Dohrn, Villa Comunale, 80121, Napoli, Italy
| | - F Carraturo
- Department of Biology, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, Via Cinthia 21, 80126, Naples, Italy
| | - M Guida
- Department of Biology, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, Via Cinthia 21, 80126, Naples, Italy; Centro Servizi Metrologici e Tecnologici Avanzati (CeSMA), Complesso Universitario di Monte Sant'Angelo, Via Cinthia 21, 80126, Naples, Italy
| | - G Libralato
- Department of Biology, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, Via Cinthia 21, 80126, Naples, Italy.
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16
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Wang L, Guo W, Zhu H, He H, Wang S. Preparation and properties of a dual-function cellulose nanofiber-based bionic biosensor for detecting silver ions and acetylcholinesterase. JOURNAL OF HAZARDOUS MATERIALS 2021; 403:123921. [PMID: 33264972 DOI: 10.1016/j.jhazmat.2020.123921] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 08/27/2020] [Accepted: 09/08/2020] [Indexed: 06/12/2023]
Abstract
A dual-function cellulose nanofiber (CNF)-based bionic biosensor with good biocompatibility was developed for detecting Ag+ and acetylcholinesterase (AChE) by grafting deoxyribonucleic acid (DNA) onto CNF. The Ag+ ions captured by the biosensor acted as recognition sites for the detection of AChE. The CNF-based bionic biosensor (CNF-DNA) could detect Ag+ concentrations as low as 10-6 nM in the presence of interference metal ions (Hg2+, Ba2+, Cd2+, Mg2+, Mn2+, Pb2+, and Zn2+). DNA-template silver nanoclusters (DNA-AgNCs) were formed on the surface of CNF-DNA during the detection of Ag+ (CNF-DNA-AgNCs). This new strategy yielded CNF-DNA-AgNCs through the adsorption of Ag+ ions onto the cytosine base of the single-stranded DNA in CNF-DNA without the use of any additional reducer. Meanwhile, the CNF-DNA-AgNCs exhibited excellent sensitivity and selectivity for trace levels (0.053 mU/mL) of AChE in the presence of interference reagents. The novel strategy proposed in this paper may establish a foundation for further research on DNA-template AgNCs for developing biosensors and biomarkers for in vivo and in vitro detection.
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Affiliation(s)
- Lei Wang
- College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, PR China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning, 530004, PR China
| | - Wei Guo
- College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, PR China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning, 530004, PR China
| | - Hongxiang Zhu
- College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, PR China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning, 530004, PR China
| | - Hui He
- College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, PR China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning, 530004, PR China.
| | - Shuangfei Wang
- College of Light Industry and Food Engineering, Guangxi University, Nanning, 530004, PR China; Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning, 530004, PR China
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17
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Bai L, Li Q, Yang Y, Ling S, Yu H, Liu S, Li J, Chen W. Biopolymer Nanofibers for Nanogenerator Development. RESEARCH (WASHINGTON, D.C.) 2021; 2021:1843061. [PMID: 33709081 PMCID: PMC7926511 DOI: 10.34133/2021/1843061] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Accepted: 01/05/2021] [Indexed: 11/23/2022]
Abstract
The development of nanogenerators (NGs) with optimal performances and functionalities requires more novel materials. Over the past decade, biopolymer nanofibers (BPNFs) have become critical sustainable building blocks in energy-related fields because they have distinctive nanostructures and properties and can be obtained from abundant and renewable resources. This review summarizes recent advances in the use of BPNFs for NG development. We will begin by introducing various strategies for fabricating BPNFs with diverse structures and performances. Then, we will systematically present the utilization of polysaccharide and protein nanofibers for NGs. We will mainly focus on the use of BPNFs to generate bulk materials with tailored structures and properties for assembling of triboelectric and piezoelectric NGs. The use of BPNFs to construct NGs for the generation of electricity from moisture and osmosis is also discussed. Finally, we illustrate our personal perspectives on several issues that require special attention with regard to future developments in this active field.
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Affiliation(s)
- Lulu Bai
- Key Laboratory of Bio-Based Material Science and Technology, Ministry of Education, Northeast Forestry University, Harbin 150040, China
| | - Qing Li
- Key Laboratory of Bio-Based Material Science and Technology, Ministry of Education, Northeast Forestry University, Harbin 150040, China
| | - Ya Yang
- CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-Nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 101400, China
| | - Shengjie Ling
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Haipeng Yu
- Key Laboratory of Bio-Based Material Science and Technology, Ministry of Education, Northeast Forestry University, Harbin 150040, China
| | - Shouxin Liu
- Key Laboratory of Bio-Based Material Science and Technology, Ministry of Education, Northeast Forestry University, Harbin 150040, China
| | - Jian Li
- Key Laboratory of Bio-Based Material Science and Technology, Ministry of Education, Northeast Forestry University, Harbin 150040, China
| | - Wenshuai Chen
- Key Laboratory of Bio-Based Material Science and Technology, Ministry of Education, Northeast Forestry University, Harbin 150040, China
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18
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19
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Sohrabnezhad S, Pourahmad A, Salahshoor M. Matrices based on meso antibacterial framework. J CHIN CHEM SOC-TAIP 2020. [DOI: 10.1002/jccs.201900496] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
| | - Afshin Pourahmad
- Department of Chemistry, Rasht Branch Islamic Azad University Rasht Iran
| | - Mobin Salahshoor
- Department of Chemistry, Faculty of Science University of Guilan Rasht Iran
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20
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Juknius T, Juknienė I, Tamulevičius T, Ružauskas M, Pamparienė I, Oberauskas V, Jurkevičiūtė A, Vasiliauskas A, Tamulevičius S. Preclinical Study of a Multi-Layered Antimicrobial Patch Based on Thin Nanocomposite Amorphous Diamond Like Carbon Films with Embedded Silver Nanoparticles. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E3180. [PMID: 32708717 PMCID: PMC7412193 DOI: 10.3390/ma13143180] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 07/12/2020] [Accepted: 07/13/2020] [Indexed: 11/29/2022]
Abstract
A growing number of severe infections are related to antibiotic-resistant bacteria, therefore, in recent years, alternative antimicrobial materials based on silver nanoparticles (NPs) attracted a lot of attention. In the current research, we present a medical patch prototype containing diamond-like carbon nanocomposite thin films doped with silver nanoparticles (DLC:Ag), as a source of silver ions, and an aqueous mass of the gelatin/agar mixture as a silver ion accumulation layer. The DLC:Ag thin films with 3.4 at.% of silver were deposited on synthetic silk employing reactive unbalanced DC magnetron sputtering of the silver target with argon ions performed in the acetylene gas atmosphere. The average size of the silver nanoparticles as defined by scanning electron microscope was 24 nm. After the film deposition, the samples were etched with RF oxygen plasma, aiming at efficient silver ion release in aqueous media from the nanocomposite film. In the patch prototype, a mixture of agar and gelatin was applied in silicone carrier with cavities, acting as a silver ion accumulation layer that further enhanced the antimicrobial efficiency. It was found that the DLC:Ag thin film on the silk after soaking in water for 24 h was able to release up to 4 ppm of Ag. The microbiological experiments using S. aureus bacteria were performed with the patch prototype and the silver ion saturated water, demonstrated the inactivation of 99% and 79% of bacteria, respectively. Scanning electron microscopy analysis showed that silver NPs destroyed the bacteria cell and the bacteria affected by Ag ions had spots and perforated cell wall areas with cytoplasm leakage out was obtained. A preliminary preclinical study using the laboratory animals demonstrated that using the patch prototype, the methicillin-resistant S. aureus (MRSA)-infected wound on skin surface healed faster compared with control and was able to kill all MRSA bacteria strains in the wound's bed after 72 h of treatment.
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Affiliation(s)
- Tadas Juknius
- Institute of Materials Science, Kaunas University of Technology, K. Baršausko St. 59, LT-51423 Kaunas, Lithuania; (A.J.); (A.V.); (S.T.)
- Veterinary Academy, Lithuanian University of Health Sciences, Tilžės St. 18, LT-47181 Kaunas, Lithuania; (I.J.); (M.R.); (I.P.); (V.O.)
| | - Indrė Juknienė
- Veterinary Academy, Lithuanian University of Health Sciences, Tilžės St. 18, LT-47181 Kaunas, Lithuania; (I.J.); (M.R.); (I.P.); (V.O.)
| | - Tomas Tamulevičius
- Institute of Materials Science, Kaunas University of Technology, K. Baršausko St. 59, LT-51423 Kaunas, Lithuania; (A.J.); (A.V.); (S.T.)
- Department of Physics, Kaunas University of Technology, Studentų St. 50, LT-51368 Kaunas, Lithuania
| | - Modestas Ružauskas
- Veterinary Academy, Lithuanian University of Health Sciences, Tilžės St. 18, LT-47181 Kaunas, Lithuania; (I.J.); (M.R.); (I.P.); (V.O.)
| | - Ina Pamparienė
- Veterinary Academy, Lithuanian University of Health Sciences, Tilžės St. 18, LT-47181 Kaunas, Lithuania; (I.J.); (M.R.); (I.P.); (V.O.)
| | - Vaidas Oberauskas
- Veterinary Academy, Lithuanian University of Health Sciences, Tilžės St. 18, LT-47181 Kaunas, Lithuania; (I.J.); (M.R.); (I.P.); (V.O.)
| | - Aušrinė Jurkevičiūtė
- Institute of Materials Science, Kaunas University of Technology, K. Baršausko St. 59, LT-51423 Kaunas, Lithuania; (A.J.); (A.V.); (S.T.)
| | - Andrius Vasiliauskas
- Institute of Materials Science, Kaunas University of Technology, K. Baršausko St. 59, LT-51423 Kaunas, Lithuania; (A.J.); (A.V.); (S.T.)
| | - Sigitas Tamulevičius
- Institute of Materials Science, Kaunas University of Technology, K. Baršausko St. 59, LT-51423 Kaunas, Lithuania; (A.J.); (A.V.); (S.T.)
- Department of Physics, Kaunas University of Technology, Studentų St. 50, LT-51368 Kaunas, Lithuania
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21
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Servatan M, Zarrintaj P, Mahmodi G, Kim SJ, Ganjali MR, Saeb MR, Mozafari M. Zeolites in drug delivery: Progress, challenges and opportunities. Drug Discov Today 2020; 25:642-656. [DOI: 10.1016/j.drudis.2020.02.005] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Revised: 01/12/2020] [Accepted: 02/07/2020] [Indexed: 12/11/2022]
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22
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Tavakolian M, Jafari SM, van de Ven TGM. A Review on Surface-Functionalized Cellulosic Nanostructures as Biocompatible Antibacterial Materials. NANO-MICRO LETTERS 2020; 12:73. [PMID: 34138290 PMCID: PMC7770792 DOI: 10.1007/s40820-020-0408-4] [Citation(s) in RCA: 92] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Accepted: 02/06/2020] [Indexed: 05/07/2023]
Abstract
As the most abundant biopolymer on the earth, cellulose has recently gained significant attention in the development of antibacterial biomaterials. Biodegradability, renewability, strong mechanical properties, tunable aspect ratio, and low density offer tremendous possibilities for the use of cellulose in various fields. Owing to the high number of reactive groups (i.e., hydroxyl groups) on the cellulose surface, it can be readily functionalized with various functional groups, such as aldehydes, carboxylic acids, and amines, leading to diverse properties. In addition, the ease of surface modification of cellulose expands the range of compounds which can be grafted onto its structure, such as proteins, polymers, metal nanoparticles, and antibiotics. There are many studies in which cellulose nano-/microfibrils and nanocrystals are used as a support for antibacterial agents. However, little is known about the relationship between cellulose chemical surface modification and its antibacterial activity or biocompatibility. In this study, we have summarized various techniques for surface modifications of cellulose nanostructures and its derivatives along with their antibacterial and biocompatibility behavior to develop non-leaching and durable antibacterial materials. Despite the high effectiveness of surface-modified cellulosic antibacterial materials, more studies on their mechanism of action, the relationship between their properties and their effectivity, and more in vivo studies are required.
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Affiliation(s)
- Mandana Tavakolian
- Department of Chemical Engineering, McGill University, Montreal, QC, H3A 0C5, Canada
- Pulp and Paper Research Center, McGill University, Montreal, QC, H3A 0C7, Canada
- Quebec Centre for Advanced Materials (QCAM/CQMF), Montreal, Canada
| | - Seid Mahdi Jafari
- Department of Food Materials and Process Design Engineering, Gorgan University of Agricultural Science and Natural Resources, Gorgan, Iran.
| | - Theo G M van de Ven
- Pulp and Paper Research Center, McGill University, Montreal, QC, H3A 0C7, Canada.
- Quebec Centre for Advanced Materials (QCAM/CQMF), Montreal, Canada.
- Department of Chemistry, McGill University, Montreal, QC, H3A 0B8, Canada.
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23
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Metal encapsulation in zeolite particles: A rational design of zeolite-supported catalyst with maximum site activity. ADV POWDER TECHNOL 2020. [DOI: 10.1016/j.apt.2020.01.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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24
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Polycaprolactone nanofiber mats decorated with photoresponsive nanogels and silver nanoparticles: Slow release for antibacterial control. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 107:110334. [DOI: 10.1016/j.msec.2019.110334] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Revised: 09/25/2019] [Accepted: 10/14/2019] [Indexed: 12/12/2022]
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25
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Rajak BL, Kumar R, Gogoi M, Patra S. Antimicrobial Activity of Nanomaterials. ENVIRONMENTAL CHEMISTRY FOR A SUSTAINABLE WORLD 2020. [DOI: 10.1007/978-3-030-29207-2_5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/07/2022]
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26
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Yuan M, Yao H, Xie L, Liu X, Wang H, Islam SM, Shi K, Yu Z, Sun G, Li H, Ma S, Kanatzidis MG. Polypyrrole–Mo3S13: An Efficient Sorbent for the Capture of Hg2+ and Highly Selective Extraction of Ag+ over Cu2+. J Am Chem Soc 2019; 142:1574-1583. [DOI: 10.1021/jacs.9b12196] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mengwei Yuan
- Beijing Key Laboratory of Energy Conversion and Storage Materials and College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
| | - Huiqin Yao
- School of Basic Medical Sciences, Ningxia Medical University, Yinchuan 750004, P. R. China
| | - Linxia Xie
- Beijing Key Laboratory of Energy Conversion and Storage Materials and College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
| | - Xiaowen Liu
- Beijing Key Laboratory of Energy Conversion and Storage Materials and College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
| | - Hui Wang
- Beijing Key Laboratory of Energy Conversion and Storage Materials and College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
| | - Saiful M. Islam
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
- Department of Chemistry, Physics, and Atmospheric Sciences, Jackson State University, Jackson, Mississippi 39217, United States
| | - Keren Shi
- State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan 750021, P. R. China
| | - Zihuan Yu
- Beijing Key Laboratory of Energy Conversion and Storage Materials and College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
| | - Genban Sun
- Beijing Key Laboratory of Energy Conversion and Storage Materials and College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
| | - Huifeng Li
- Beijing Key Laboratory of Energy Conversion and Storage Materials and College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
| | - Shulan Ma
- Beijing Key Laboratory of Energy Conversion and Storage Materials and College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
| | - Mercouri G. Kanatzidis
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
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27
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Sun L, Cai J, Sun Y, Zhang D. Three-dimensional assembly of silver nanoparticles spatially confined by cellular structure of Spirulina, from nanospheres to nanosheets. NANOTECHNOLOGY 2019; 30:495704. [PMID: 31469089 DOI: 10.1088/1361-6528/ab3ee7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Three-dimensional (3D) ordered construction of nanoparticles (NPs) has attracted much attention in wide applications, however, techniques with respect to cost effective nanofabrication of well defined functional architectures is still lacking. To address this specific issue, a bio-interface confinement approach is proposed that precisely replicates the complex cellular structural features of microbes and integrates silver NP (SNP) building blocks into their 3D framework in a precise, low cost and mass production way. Herein, the SNPs with nanospheres and nanosheets structure were synthesized by way of electroless deposition using Spirulina as template. Results showed that SNPs were orderly assembled along the cellular structure, and the spatially confinement of cellular texture induced the transformation of SNPs from sphere to flake morphology during their continuous growth. The silver assembly not only shows good antibacterial activity, but also exhibits excellent surface enhanced Raman scattering (SERS) performance with the enhancement factor as high as 5.95 × 108 and good recuperability towards Rhodamine 6G. The fascinating SERS performance can be ascribed to the combined action of nanosheets morphology of SNPs, hierarchical nanostructure of the cellular structure, and the small interparticle spacing. This strategy provides an effective strategy for controllable and ordered 3D assembly of NPs by using the cellular texture.
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Affiliation(s)
- Lili Sun
- School of Mechanical Engineering and Automation, Beihang University, Beijing 100191, People's Republic of China
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Dixit D, Soppina V, Ghoroi C. A Non-electric and Affordable Surface Engineered Particle (SEP) based Point-of-Use (POU) Water Disinfection System. Sci Rep 2019; 9:18245. [PMID: 31796814 PMCID: PMC6890752 DOI: 10.1038/s41598-019-54602-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Accepted: 11/15/2019] [Indexed: 11/12/2022] Open
Abstract
Access to safe drinking water is still a distant dream to millions of people around the world. Especially, people from the low-income group in the developing countries remain deprived of this fundamental right and causes millions of death. There is an urgent need to develop affordable and easy to handle water filter which can provide desired drinking water quality without any electricity. In the present work, a simple and low-cost surface engineered particle (SEP) based filter is developed via alkali treatment of soda-lime-silica particle. The SEP based filter can be used as a portable, non-electric, gravity-driven Point-of-Use (POU) water disinfection system. The developed SEP-based filter is capable to arrest the 99.48% (~2 to 2.5 log10 reduction) of gram-negative bacteria Escherichia coli (E. coli OP50) on its surface from the water containing 3 × 108 cells/ml. No bacterial regrowth is observed in the purified water for 12 h. The performance of SEP bed filter is implicated to the nano-scale surface roughness, its distribution along with the surface charge and surface hydrophobicity which are favorable to attract and adhere the bacteria in the flowing water. The observation is consistent over multiple filtration cycles indicating the suitability of SEP based bed filter for POU water disinfection. The SEP surface with 0.05 mM Ag+ loading (SEP+) completely inactivated (>99.99999%) bacteria and protects any bacteria recontamination in the purified water for its long term usage. The strong and effective silver binding property of SEP surface enables very minimal silver loading and eliminates any health hazard due to low silver leaching (~50 ppb) which is well below the drinking water equivalent level (DWEL ≤ 100 ppb). In rural and urban slum areas of developing countries where no water purification system exists prior to consumption, the easy-to-implement and affordable SEP-based gravity-driven non-electric point-of-use water purifier (materials cost ~ 0.25 USD) can be used to protect millions of lives from water borne diseases.
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Affiliation(s)
- Deepa Dixit
- DryProTech Lab., Chemical Engineering, Indian Institute of Technology Gandhinagar, Palaj, Gandhinagar, Gujarat, 382355, India
| | - Virupakshi Soppina
- Biological Engineering, Indian Institute of Technology Gandhinagar, Palaj, Gandhinagar, Gujarat, 382355, India
| | - Chinmay Ghoroi
- DryProTech Lab., Chemical Engineering, Indian Institute of Technology Gandhinagar, Palaj, Gandhinagar, Gujarat, 382355, India.
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Qing Y, Li K, Li D, Qin Y. Antibacterial effects of silver incorporated zeolite coatings on 3D printed porous stainless steels. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 108:110430. [PMID: 31923959 DOI: 10.1016/j.msec.2019.110430] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2018] [Revised: 11/10/2019] [Accepted: 11/12/2019] [Indexed: 12/13/2022]
Abstract
Functionalization of porous metals with antibacterial coatings is hotly pursued in recent decade. Here we fabricated a highly porous stainless steel component by selective laser melting and then coated with silver incorporated zeolite by in situ hydrothermal crystallization method. The morphology of their surface was investigated by scanning electron microscopy. The inhibition of Escherichia coli and Staphylococcus aureus were identified by bacterial viability studies after 24 h of incubation. More importantly, the obtained coatings show better osteointegration by spreading bone marrow stromal cells (BMSCs) after cultured with different scaffold extract solutions for 1, 3, and 5 days. These results suggest that silver incorporated zeolite coatings on 3D printed porous stainless steels exhibit better antibacterial activity and biocompatibility, showing potential application in the field of medical implant materials.
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Affiliation(s)
- Yunan Qing
- Orthopaedic Center, The Second Hospital of Jilin University, 218 Ziqiang Street, Changchun 130041, China
| | - Kaishen Li
- Key Laboratory of Automobile Materials of MOE, Department of Materials Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Dongdong Li
- Key Laboratory of Automobile Materials of MOE, Department of Materials Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, China.
| | - Yanguo Qin
- Orthopaedic Center, The Second Hospital of Jilin University, 218 Ziqiang Street, Changchun 130041, China.
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Wang Z, Wang T, Hua A, Ma S, Zhang Z, Liu L. Prolonged antimicrobial activity of silver core-carbon shell nanoparticles. KOREAN J CHEM ENG 2019. [DOI: 10.1007/s11814-019-0387-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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Fang HY, Huang WM, Chen DH. One-step synthesis of positively charged bifunctional carbon dot/silver composite nanoparticles for killing and fluorescence imaging of Gram-negative bacteria. NANOTECHNOLOGY 2019; 30:365603. [PMID: 31067514 DOI: 10.1088/1361-6528/ab1fef] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Positively charged C-dot/Ag composite nanoparticles were synthesized via the facile one-step hydrothermal reaction of L-arginine and silver nitrate. L-arginine was used not only as the carbon and nitrogen sources of N-doped C-dots but also as the reducing agent of silver ions. It was noteworthy that the resulting C-dots were negatively charged but the simultaneous reduction of silver ions made the resulting C-dot/Ag composite nanoparticles become positively charged. Furthermore, as compared to C-dots, the presence of Ag nanoparticles and the higher nitrogen content led to the redshift of excitation and emission intervals. Also, the enlarged excitation wavelength range in the visible light region made the resulting C-dot/Ag nanocomposite more useful in fluorescence imaging. In addition, the C-dot/Ag composite nanoparticles exhibited more excellent bacteria-killing capability than C-dots and were successfully used for the fluorescence imaging of E. coli because they could attach and release silver ions on the surface of E. coli. In conclusion, a facile one-step hydrothermal process has been successfully developed for the synthesis of C-dot/Ag composite nanoparticles, and the resulting C-dot/Ag composite nanoparticles are expected to have great potential in the killing and fluorescence imaging of Gram-negative bacteria.
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Affiliation(s)
- Hong-Yi Fang
- Department of Chemical Engineering, National Cheng Kung University, Tainan, 701 Taiwan
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Liu C, Luo L, Liu L. Antibacterial effect and mechanism of silver-carried zirconium glycine-N,N-dimethylenephosphonate as a synergistic antibacterial agent. INORG CHEM COMMUN 2019. [DOI: 10.1016/j.inoche.2019.107497] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Vergara-Figueroa J, Alejandro-Martín S, Pesenti H, Cerda F, Fernández-Pérez A, Gacitúa W. Obtaining Nanoparticles of Chilean Natural Zeolite and its Ion Exchange with Copper Salt (Cu 2+) for Antibacterial Applications. MATERIALS 2019; 12:ma12132202. [PMID: 31323906 PMCID: PMC6651861 DOI: 10.3390/ma12132202] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 06/11/2019] [Accepted: 06/12/2019] [Indexed: 11/24/2022]
Abstract
This article describes the production of nanoparticles of Chilean natural zeolite, using three size reduction methods: Ball mill, microgrinding, and microfluidization. Morphological characterization of samples indicated an average diameter of 37.2 ± 15.8 nm of the zeolite particles. The size reduction and chemical treatments did not affect the morphology or integrity of the zeolite. An increase of the zeolite samples’ Si/Al ratio was observed after the acid treatment and was confirmed by SEM-EDX analysis. Moreover, the effectiveness of the copper salt ion exchange (Cu2+) to the zeolite nanoparticles was analyzed by SEM-EDX. XRD analysis indicated that clinoptilolite and mordenite are the main phases of Chilean natural zeolite, and the crystalline structure was not affected by the modification processes. The FTIR characterization showed the presence of chemical bonds of copper with the zeolite nanoparticle framework. The ion-exchanged zeolite nanoparticles were evaluated for antibacterial behavior by the disc diffusion method. Additionally, the minimum inhibitory concentration and minimum bactericidal concentration were obtained. Microbiological assays with copper-exchanged nanozeolites showed an antimicrobial activity with a bactericidal effect against Escherichia coli and Staphylococcus aureus, which are the primary pathogens of food and are also resistant to multiple drugs. In this study, a new application for natural nanozeolites is demonstrated, as the incorporated copper ions (Cu2+) in nanozeolites registered a productive antibacterial activity.
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Affiliation(s)
- Judith Vergara-Figueroa
- Centro de Biomateriales y Nanotecnología, Universidad del Bío-Bío, Concepción 4030000, Chile.
- Departamento de Ingeniería en Maderas, Facultad de Ingeniería, Universidad del Bío-Bío, Concepción 4030000, Chile.
| | - Serguei Alejandro-Martín
- Departamento de Ingeniería en Maderas, Facultad de Ingeniería, Universidad del Bío-Bío, Concepción 4030000, Chile
- Nanomaterials and Catalysts for Sustainable Processes Group (NanoCatpPS), Concepción 4030000, Chile
| | - Héctor Pesenti
- Departamento de Procesos Industriales, Universidad Católica de Temuco, Temuco 4780000, Chile
| | - Fabiola Cerda
- Departamento de Ingeniería en Alimentos, Universidad del Bío-Bío, Chillán 3780000, Chile
| | - Arturo Fernández-Pérez
- Departamento de Física, Facultad de Ciencias, Universidad del Bío-Bío, Concepción 4030000, Chile
| | - William Gacitúa
- Centro de Biomateriales y Nanotecnología, Universidad del Bío-Bío, Concepción 4030000, Chile
- Departamento de Ingeniería en Maderas, Facultad de Ingeniería, Universidad del Bío-Bío, Concepción 4030000, Chile
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Fu W, Dai Y, Meng X, Xu W, Zhou J, Liu Z, Lu W, Wang S, Huang C, Sun Y. Electronic textiles based on aligned electrospun belt-like cellulose acetate nanofibers and graphene sheets: portable, scalable and eco-friendly strain sensor. NANOTECHNOLOGY 2019; 30:045602. [PMID: 30479314 DOI: 10.1088/1361-6528/aaed99] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Recently, there has been strong interest in flexible and wearable electronics to meet the technological demands of modern society. Environmentally-friendly and scalable electronic textiles is a key area that is still significantly underdeveloped. Here, we describe a novel strain sensor composed of aligned cellulose acetate (CA) nanofibers with belt-like morphology and a reduced graphene oxide (RGO) layer. The unique spatial alignment, microstructure and wettability of CA nanofibrous membranes facilitate their close contact with deposited GO colloids. After a portable and fast hot-press process within 700 s at 150 °C, the GO on CA membrane can be facilely reduced to a conductive RGO layer. Moreover, the connection among contiguous CA nanofibers and the interaction between the GO and CA substrate were both highly enhanced, resulting in superior mechanical strength with Young's modulus of 1.3 GPa and small sheet resistance lower than 10 kΩ. Therefore, the conductive RGO/CA membrane was successfully utilized as a strain sensor in a broad deformation range and with versatile deformation types. Moreover, the distinctive mechanical strength under different stretch angles endowed the well-aligned RGO/CA film with intriguing sensitivity against stress direction. Such a cost-effective and environmentally-friendly method can be easily extended to the scalable production of graphene-based flexible electronic textiles.
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Affiliation(s)
- Wanlin Fu
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing, Jiangsu 211189, People's Republic of China
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Alonso-Díaz A, Floriach-Clark J, Fuentes J, Capellades M, Coll NS, Laromaine A. Enhancing Localized Pesticide Action through Plant Foliage by Silver-Cellulose Hybrid Patches. ACS Biomater Sci Eng 2019; 5:413-419. [DOI: 10.1021/acsbiomaterials.8b01171] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Abasian P, Radmansouri M, Habibi Jouybari M, Ghasemi MV, Mohammadi A, Irani M, Jazi FS. Incorporation of magnetic NaX zeolite/DOX into the PLA/chitosan nanofibers for sustained release of doxorubicin against carcinoma cells death in vitro. Int J Biol Macromol 2019; 121:398-406. [DOI: 10.1016/j.ijbiomac.2018.09.215] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Revised: 09/04/2018] [Accepted: 09/28/2018] [Indexed: 11/28/2022]
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Facile fabrication of silver nanoparticles deposited cellulose microfiber nanocomposites for catalytic application. J Colloid Interface Sci 2018; 526:194-200. [DOI: 10.1016/j.jcis.2018.04.045] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2018] [Revised: 04/09/2018] [Accepted: 04/09/2018] [Indexed: 01/27/2023]
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Guerra FD, Attia MF, Whitehead DC, Alexis F. Nanotechnology for Environmental Remediation: Materials and Applications. Molecules 2018; 23:E1760. [PMID: 30021974 PMCID: PMC6100491 DOI: 10.3390/molecules23071760] [Citation(s) in RCA: 155] [Impact Index Per Article: 25.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Revised: 07/04/2018] [Accepted: 07/11/2018] [Indexed: 01/16/2023] Open
Abstract
Environmental remediation relies mainly on using various technologies (e.g., adsorption, absorption, chemical reactions, photocatalysis, and filtration) for the removal of contaminants from different environmental media (e.g., soil, water, and air). The enhanced properties and effectiveness of nanotechnology-based materials makes them particularly suitable for such processes given that they have a high surface area-to-volume ratio, which often results in higher reactivity. This review provides an overview of three main categories of nanomaterials (inorganic, carbon-based, and polymeric-based materials) used for environmental remediation. The use of these nanomaterials for the remediation of different environmental contaminants-such as heavy metals, dyes, chlorinated organic compounds, organophosphorus compounds, volatile organic compounds, and halogenated herbicides-is reviewed. Various recent examples are extensively highlighted focusing on the materials and their applications.
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Affiliation(s)
- Fernanda D Guerra
- Department of Bioengineering, Clemson University, 301 Rhodes Research Center, Clemson, SC 29634, USA.
| | - Mohamed F Attia
- Department of Bioengineering, Clemson University, 301 Rhodes Research Center, Clemson, SC 29634, USA.
- Department of Chemistry, Clemson University, 467 Hunter Laboratories, Clemson, SC 29634, USA.
| | - Daniel C Whitehead
- Department of Chemistry, Clemson University, 467 Hunter Laboratories, Clemson, SC 29634, USA.
| | - Frank Alexis
- Department of Bioengineering, Clemson University, 301 Rhodes Research Center, Clemson, SC 29634, USA.
- School of Biological Sciences and Engineering, Yachay Tech, San Miguel de Urcuquí, Ibarra EC 100150, Ecuador.
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Kurtz IS, Schiffman JD. Current and Emerging Approaches to Engineer Antibacterial and Antifouling Electrospun Nanofibers. MATERIALS (BASEL, SWITZERLAND) 2018; 11:E1059. [PMID: 29932127 PMCID: PMC6073658 DOI: 10.3390/ma11071059] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 06/18/2018] [Accepted: 06/19/2018] [Indexed: 11/16/2022]
Abstract
From ship hulls to bandages, biological fouling is a ubiquitous problem that impacts a wide range of industries and requires complex engineered solutions. Eliciting materials to have antibacterial or antifouling properties describes two main approaches to delay biofouling by killing or repelling bacteria, respectively. In this review article, we discuss how electrospun nanofiber mats are blank canvases that can be tailored to have controlled interactions with biologics, which would improve the design of intelligent conformal coatings or freestanding meshes that deliver targeted antimicrobials or cause bacteria to slip off surfaces. Firstly, we will briefly discuss the established and emerging technologies for addressing biofouling through antibacterial and antifouling surface engineering, and then highlight the recent advances in incorporating these strategies into electrospun nanofibers. These strategies highlight the potential for engineering electrospun nanofibers to solicit specific microbial responses for human health and environmental applications.
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Affiliation(s)
- Irene S Kurtz
- Department of Chemical Engineering, University of Massachusetts Amherst, Amherst, MA 01003-9303, USA.
| | - Jessica D Schiffman
- Department of Chemical Engineering, University of Massachusetts Amherst, Amherst, MA 01003-9303, USA.
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Arisoy FD, Kolewe KW, Homyak B, Kurtz IS, Schiffman JD, Watkins JJ. Bioinspired Photocatalytic Shark-Skin Surfaces with Antibacterial and Antifouling Activity via Nanoimprint Lithography. ACS APPLIED MATERIALS & INTERFACES 2018; 10:20055-20063. [PMID: 29790348 PMCID: PMC6013830 DOI: 10.1021/acsami.8b05066] [Citation(s) in RCA: 77] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
By combining antifouling shark-skin patterns with antibacterial titanium dioxide (TiO2) nanoparticles (NPs), we present a simple route toward producing durable multifunctional surfaces that decrease microbial attachment and inactivate attached microorganisms. Norland Optical Adhesive, a UV-crosslinkable adhesive material, was loaded with 0, 10, or 50 wt % TiO2 NPs from which shark-skin microstructures were imprinted using solvent-assisted soft nanoimprint lithography on a poly(ethylene terephthalate) (PET) substrate. To obtain coatings with an exceptional durability and an even higher concentration of TiO2 NPs, a solution containing 90 wt % TiO2 NPs and 10 wt % tetraethyl orthosilicate was prepared. These ceramic shark-skin-patterned surfaces were fabricated on a PET substrate and were quickly cured, requiring only 10 s of near infrared (NIR) irradiation. The water contact angle and the mechanical, antibacterial, and antifouling characteristics of the shark-skin-patterned surfaces were investigated as a function of TiO2 composition. Introducing TiO2 NPs increased the contact angle hysteresis from 30 to 100° on shark-skin surfaces. The hardness and modulus of the films were dramatically increased from 0.28 and 4.8 to 0.49 and 16 GPa, respectively, by creating ceramic shark-skin surfaces with 90 wt % TiO2 NPs. The photocatalytic shark-skin-patterned surfaces reduced the attachment of Escherichia coli by ∼70% compared with smooth films with the same chemical composition. By incorporating as low as 10 wt % TiO2 NPs into the chemical matrix, over 95% E. coli and up to 80% Staphylococcus aureus were inactivated within 1 h UV light exposure because of the photocatalytic properties of TiO2. The photocatalytic shark-skin-patterned surfaces presented here were fabricated using a solution-processable and roll-to-roll compatible technique, enabling the production of large-area high-performance coatings that repel and inactivate bacteria.
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Affiliation(s)
- Feyza Dundar Arisoy
- Department of Polymer Science and Engineering, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
| | - Kristopher W. Kolewe
- Department of Chemical Engineering, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
| | - Benjamin Homyak
- Department of Polymer Science and Engineering, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
| | - Irene S. Kurtz
- Department of Chemical Engineering, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
| | - Jessica D. Schiffman
- Department of Chemical Engineering, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
| | - James J. Watkins
- Department of Polymer Science and Engineering, University of Massachusetts Amherst, Amherst, Massachusetts 01003, United States
- Corresponding Author:
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Medina-Ramírez A, Flores-Díaz AA, Ruiz Camacho B, García-Ruiz G. Synthesis of zeolite membranes on calcium silicate support and their bioactive response. Prog Biomater 2018; 7:61-71. [PMID: 29428997 PMCID: PMC5823815 DOI: 10.1007/s40204-018-0085-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Accepted: 02/06/2018] [Indexed: 11/18/2022] Open
Abstract
The synthesis of calcium silicate supported zeolite membrane was carried out by second growth method. The chemical nature of the functionalizing agent on the formation of homogenous zeolite membrane was evaluated. One monomer and two cationic polymers were used: 3-aminopropyltriethoxysilane (APS), polyethylenimine (PEI) and polydiallyldimethylammonium chloride (PDDA). The support was subjected to chemical functionalization and then it was rubbed with zeolite crystals. The W zeolite was used as zeolite seed in two different Si/Al ratios. The functionalized and rubbed supports were submitted to hydrothermal treatment at 150 °C for 48 h. The bioactivity of the homogeneous zeolite membranes was evaluated by the biomimetic method through the membranes soaking in a simulated body fluid (SBF) at 37 °C for 21 days. Two immersion methods were evaluated. The products were characterized by XRD and SEM techniques. The results indicated that the supported functionalization with PDDA and the Si/Al ratio (higher than 1.8) of zeolite enhanced the interaction between the support and the zeolite precursor enhancing the formation of homogeneous zeolite membrane on the surface. The presence of the functional groups of PDDA on the membrane was detected by FTIR. After immersion in SBF, the zeolite membrane was stable and led to the formation of Ca-P layer on its surface. The re-immersion method led to the formation of richer Ca/P layer (1.36). These findings allowed generating a zeolite membrane with combined properties of calcium silicate and the controllable porosity of zeolitic material making it potentially useful for bone regeneration and drug releasing.
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Affiliation(s)
- A. Medina-Ramírez
- Division de Ciencias Naturales y Exactas, Chemical Engineering Department, Universidad de Guanajuato, Campus Guanajuato. Noria Alta s/n, 36050 Guanajuato, Guanajuato Mexico
| | - A. A. Flores-Díaz
- Nanotechnology Engineering, Universidad de La Ciénega del Estado de Michoacan de Ocampo, Av. Universidad #3000 Lomas de la Universidad, 56020 Sahuayo, Michoacan Mexico
| | - B. Ruiz Camacho
- Division de Ciencias Naturales y Exactas, Chemical Engineering Department, Universidad de Guanajuato, Campus Guanajuato. Noria Alta s/n, 36050 Guanajuato, Guanajuato Mexico
| | - G. García-Ruiz
- Nanotechnology Engineering, Universidad de La Ciénega del Estado de Michoacan de Ocampo, Av. Universidad #3000 Lomas de la Universidad, 56020 Sahuayo, Michoacan Mexico
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Malhotra K, Shankar S, Rai R, Singh Y. Broad-Spectrum Antibacterial Activity of Proteolytically Stable Self-Assembled αγ-Hybrid Peptide Gels. Biomacromolecules 2018; 19:782-792. [PMID: 29384665 DOI: 10.1021/acs.biomac.7b01582] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Bacterial infections pose a serious threat to mankind, and there is immense interest in the design and development of self-assembled peptide gels using ultrashort peptides for antibacterial applications. The peptide gels containing natural amino acids suffer from poor stability against proteolytic enzymes. Therefore, there is a need to design and develop peptide gels with improved stability against proteolytic enzymes. In the present work, we report the synthesis and characterization of α/γ hybrid peptides Boc-D-Phe-γ4-L-Phe-PEA (NH007) and Boc-L-Phe-γ4-L-Phe-PEA (NH009) to improve the proteolytic stability. Both of the dipeptides were found to self-assemble into gels in aqueous DMSO (3-5% w/v), and the self-assembly process was studied using FTIR and CD, which indicated antiparallel β-sheet formation with random coils in NH007 gels and random or unordered conformation in NH009. The rheological studies indicated viscoelastic characteristics for both gels; the storage modulus ( G') for NH007 and NH009 gels (3% w/v) was estimated as 0.2 and 0.5 MPa, higher than the loss modulus ( G''). Also, both gels demonstrated self-healing characteristics for six consecutive cycles when subjected to varying strains of 0.1 and 30% (200 s each). The peptide gels were incubated with a mocktail of proteolytic enzymes, proteinase K, pepsin, and chymotrypsin, and stability was monitored using RP HPLC. Up to 23 and 40% degradation was observed for NH007 (3%, w/v) in 24 and 36 h, and 77 and 94% degradation was observed for NH009 (3%, w/v), within the same period. Thus α/γ hybrid peptide gels containing D-Phe exhibited higher stability than gels fabricated using L-Phe. The use of D-residue in α/γ hybrid peptide significantly enhanced the stability of peptides against proteolytic enzymes, as the stability data reported in this work are possibly the best in class. Both peptide gels exhibited broad-spectrum antibacterial activity against Gram-negative and Gram-positive bacteria, such as Escherichia coli, Pseudomonas aeruginosa, Bacillus subtilis, and Staphylococcus aureus. The Pseudomonas aeruginosa and Staphylococcus aureus, in particular, are known to develop resistance. The NH007 (3%, w/v) demonstrated 65% inhibition, whereas NH009 (3%, w/v) showed 78% inhibition, with potent activity against Pseudomonas aeruginosa. Mechanistic studies, using SEM, HR-TEM, and bacterial live-dead assay, indicated entrapment of bacteria in gel networks, followed by interaction with cell membrane components and lysis. Cell viability (MTT assay) and toxicity (LDH assay) studies showed that both gels are not toxic to NIH 3T3 mouse embryonic fibroblast cells (mammalian). MTT assay showed >85% cell viability, and LDH assay exhibited not more than 15% cytotoxicity, even at higher concentrations (5%, w/v) and prolonged exposures (48 h). Overall, studies indicate the potential application of gels developed from the α/γ hybrid peptides in preventing biomaterial-related infections.
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Affiliation(s)
- Kamal Malhotra
- Department of Chemistry , Indian Institute of Technology Ropar , Rupnagar 140001 , Punjab , India
| | - Sudha Shankar
- Medicinal Chemistry Division , CSIR-Indian Institute of Integrative Medicine , Canal Road , Jammu Tawi 180001 , Jammu and Kashmir , India.,Academy of Scientific and Innovative Research , New Delhi 110001 , Delhi , India
| | - Rajkishor Rai
- Medicinal Chemistry Division , CSIR-Indian Institute of Integrative Medicine , Canal Road , Jammu Tawi 180001 , Jammu and Kashmir , India.,Academy of Scientific and Innovative Research , New Delhi 110001 , Delhi , India
| | - Yashveer Singh
- Department of Chemistry , Indian Institute of Technology Ropar , Rupnagar 140001 , Punjab , India
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Mayerberger EA, Street RM, McDaniel RM, Barsoum MW, Schauer CL. Antibacterial properties of electrospun Ti3C2Tz(MXene)/chitosan nanofibers. RSC Adv 2018; 8:35386-35394. [PMID: 35547922 PMCID: PMC9087880 DOI: 10.1039/c8ra06274a] [Citation(s) in RCA: 74] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Accepted: 10/01/2018] [Indexed: 01/04/2023] Open
Abstract
Electrospun natural polymeric bandages are highly desirable due to their low-cost, biodegradability, non-toxicity and antimicrobial properties. Functionalization of these nanofibrous mats with two-dimensional nanomaterials is an attractive strategy to enhance the antibacterial effects. Herein, we demonstrate an electrospinning process to produce encapsulated delaminated Ti3C2Tz (MXene) flakes within chitosan nanofibers for passive antibacterial wound dressing applications. In vitro antibacterial studies were performed on crosslinked Ti3C2Tz/chitosan composite fibers against Gram-negative Escherichia coli (E. coli) and Gram-positive Staphylococcus aureus (S. aureus) – demonstrating a 95% and 62% reduction in colony forming units, respectively, following 4 h of treatment with the 0.75 wt% Ti3C2Tz – loaded nanofibers. Cytotoxicity studies to determine biocompatibility of the nanofibers indicated the antibacterial MXene/chitosan nanofibers are non-toxic. The incorporation of Ti3C2Tz single flakes on fiber morphology was analyzed by scanning electron microscopy (SEM) and transmission electron microscopy equipped with an energy-dispersive detector (TEM-EDS). Our results suggest that the electrospun Ti3C2Tz/chitosan nanofibers are a promising candidate material in wound healing applications. Electrospun natural polymeric bandages are highly desirable due to their low-cost, biodegradability, non-toxicity and antimicrobial properties.![]()
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Affiliation(s)
| | - Reva M. Street
- Department of Materials Science and Engineering
- Drexel University
- Philadelphia
- USA
| | - Riki M. McDaniel
- Department of Materials Science and Engineering
- Drexel University
- Philadelphia
- USA
| | - Michel W. Barsoum
- Department of Materials Science and Engineering
- Drexel University
- Philadelphia
- USA
| | - Caroline L. Schauer
- Department of Materials Science and Engineering
- Drexel University
- Philadelphia
- USA
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Wu F, He D, Chen L, Liu F, Huang H, Dai J, Zhang S, You J. Antibacterial coordination polymer hydrogels composed of silver(i)-PEGylated bisimidazolylbenzyl alcohol. RSC Adv 2018; 8:20829-20835. [PMID: 35542359 PMCID: PMC9080857 DOI: 10.1039/c8ra00682b] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Accepted: 05/22/2018] [Indexed: 02/05/2023] Open
Abstract
Herein, antibacterial coordination polymer hydrogels were conveniently fabricated in water via coordination between silver nitrate and PEGylated bisimidazolylbenzyl alcohol (1a–c).
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Affiliation(s)
- Fang Wu
- National Engineering Research Center for Biomaterials
- Sichuan University
- China
| | - Dengfeng He
- National Engineering Research Center for Biomaterials
- Sichuan University
- China
| | - Lei Chen
- State Key Laboratory of Oral Diseases
- West China Hospital of Stomatology
- Sichuan University
- China
| | - Fangqin Liu
- National Engineering Research Center for Biomaterials
- Sichuan University
- China
| | - Haolong Huang
- National Engineering Research Center for Biomaterials
- Sichuan University
- China
| | | | - Shiyong Zhang
- National Engineering Research Center for Biomaterials
- Sichuan University
- China
| | - Jingsong You
- National Engineering Research Center for Biomaterials
- Sichuan University
- China
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47
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Chen S, Popovich J, Iannuzo N, Haydel SE, Seo DK. Silver-Ion-Exchanged Nanostructured Zeolite X as Antibacterial Agent with Superior Ion Release Kinetics and Efficacy against Methicillin-Resistant Staphylococcus aureus. ACS APPLIED MATERIALS & INTERFACES 2017; 9:39271-39282. [PMID: 29083147 DOI: 10.1021/acsami.7b15001] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
As antibiotic resistance continues to be a major public health problem, antimicrobial alternatives have become critically important. Nanostructured zeolites have been considered as an ideal host for improving popular antimicrobial silver-ion-exchanged zeolites, because with very short diffusion path lengths they offer advantages in ion diffusion and release over their conventional microsized zeolite counterparts. Herein, comprehensive studies are reported on materials characteristics, silver-ion release kinetics, and antibacterial properties of silver-ion-exchanged nanostructured zeolite X with comparisons to conventional microsized silver-ion-exchanged zeolite (∼2 μm) as a reference. The nanostructured zeolites are submicrometer-sized aggregates (100-700 nm) made up of primary zeolite particles with an average primary particle size of 24 nm. The silver-ion-exchanged nanostructured zeolite released twice the concentration of silver ions at a rate approximately three times faster than the reference. The material exhibited rapid antimicrobial activity against methicillin-resistant Staphylococcus aureus (MRSA) with minimum inhibitory concentration (MIC) values ranging from 4 to 16 μg/mL after 24 h exposure in various growth media and a minimum bactericidal concentration (MBC; >99.9% population reduction) of 1 μg/mL after 2 h in water. While high concentrations of silver-ion-exchanged nanostructured zeolite X were ineffective at reducing MRSA biofilm cell viability, efficacy increased at lower concentrations. In consideration of potential medical applications, cytotoxicity of the silver-ion-exchanged nanostructured zeolite X was also investigated. After 4 days of incubation, significant reduction in eukaryotic cell viability was observed only at concentrations 4-16-fold greater than the 24 h MIC, indicating low cytotoxicity of the material. Our results establish silver-ion-exchanged nanostructured zeolites as an effective antibacterial material against dangerous antibiotic-resistant bacteria.
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Affiliation(s)
- Shaojiang Chen
- School of Molecular Sciences, ‡School of Life Sciences, and §Biodesign Institute Center for Immunotherapy, Vaccines, and Virotherapy, Arizona State University , Tempe, Arizona 85287, United States
| | - John Popovich
- School of Molecular Sciences, ‡School of Life Sciences, and §Biodesign Institute Center for Immunotherapy, Vaccines, and Virotherapy, Arizona State University , Tempe, Arizona 85287, United States
| | - Natalie Iannuzo
- School of Molecular Sciences, ‡School of Life Sciences, and §Biodesign Institute Center for Immunotherapy, Vaccines, and Virotherapy, Arizona State University , Tempe, Arizona 85287, United States
| | - Shelley E Haydel
- School of Molecular Sciences, ‡School of Life Sciences, and §Biodesign Institute Center for Immunotherapy, Vaccines, and Virotherapy, Arizona State University , Tempe, Arizona 85287, United States
| | - Dong-Kyun Seo
- School of Molecular Sciences, ‡School of Life Sciences, and §Biodesign Institute Center for Immunotherapy, Vaccines, and Virotherapy, Arizona State University , Tempe, Arizona 85287, United States
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48
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Sornkamnerd S, Okajima MK, Kaneko T. Tough and Porous Hydrogels Prepared by Simple Lyophilization of LC Gels. ACS OMEGA 2017; 2:5304-5314. [PMID: 31457799 PMCID: PMC6641907 DOI: 10.1021/acsomega.7b00602] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Accepted: 07/21/2017] [Indexed: 05/30/2023]
Abstract
Porous hydrogels possessing mechanical toughness were prepared from sacran, a supergiant liquid crystalline (LC) polysaccharide produced from Aphanothece sacrum. First, layered hydrogels were prepared by thermal cross-linking of film cast over a sacran LC solution. Then, anisotropic pores were constructed using a freeze-drying technique on the water-swollen layered hydrogels. Scanning electron microscopic observation revealed that pores were observable only on the side faces of sponge materials parallel to the layered structure but never on the top or bottom faces. The pore size, porosity, and swelling behavior were controlled by the thermal-cross-linking temperature. To clarify the freezing effect, a freeze-thawing method was used for comparison. The freeze-thawed hydrogels also formed layers but no pores. The mechanical properties and network structures of hydrogels were also studied, clarifying that porous hydrogels, even those with a high quantity of pores, were tough owing to the pores orienting along the layer direction like tunnels.
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Affiliation(s)
- Saranyoo Sornkamnerd
- Energy and Environment Area,
School of Materials Science, Graduate School of Advanced Science and
Technology, Japan Advanced Institute of
Science and Technology (JAIST), 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan
| | - Maiko K. Okajima
- Energy and Environment Area,
School of Materials Science, Graduate School of Advanced Science and
Technology, Japan Advanced Institute of
Science and Technology (JAIST), 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan
| | - Tatsuo Kaneko
- Energy and Environment Area,
School of Materials Science, Graduate School of Advanced Science and
Technology, Japan Advanced Institute of
Science and Technology (JAIST), 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan
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49
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Silver Nanoparticles-Loaded Exfoliated Graphite and Its Anti-Bacterial Performance. APPLIED SCIENCES-BASEL 2017. [DOI: 10.3390/app7080852] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Pal S, Nisi R, Stoppa M, Licciulli A. Silver-Functionalized Bacterial Cellulose as Antibacterial Membrane for Wound-Healing Applications. ACS OMEGA 2017; 2:3632-3639. [PMID: 30023700 PMCID: PMC6044878 DOI: 10.1021/acsomega.7b00442] [Citation(s) in RCA: 79] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Accepted: 06/26/2017] [Indexed: 05/21/2023]
Abstract
Bacterial cellulose (BC) functionalized with silver nanoparticles (AgNPs) is evaluated as an antimicrobial membrane for wound-healing treatment. A facile green synthesis of silver nanoparticles inside the porous three-dimensional weblike BC network has been obtained by UV light irradiation. AgNPs were photochemically deposited onto the BC gel network as well as they were chemically bonded to the cellulose fiber surfaces. AgNPs with a narrow size distribution along with some aggregates in the BC network were evidenced from the morphological analyses. A highly crystalline nature of the BC membranes was observed in X-ray diffraction measurements, and the presence of metallic silver confirmed the photochemical reduction of Ag+ → Ag0 in Ag/BC composites. Antibacterial activity of the hybrid composites, such as pellicles, performed against the Gram-negative bacteria (Escherichia coli) by disk diffusion and growth dynamics methods showed high bacteria-killing performance. No significant amount of silver release was observed from the Ag/BC pellicles even after a long soaking time. As composite pellicles are preserved in a moist environment that also favors wound recovery, by combining all of these properties the material could be useful in wound-healing treatments.
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Affiliation(s)
- Sudipto Pal
- Department
of Engineering for Innovation, University
of Salento, via Monteroni, 73100 Lecce, Italy
| | - Rossella Nisi
- Department
of Engineering for Innovation, University
of Salento, via Monteroni, 73100 Lecce, Italy
| | | | - Antonio Licciulli
- Department
of Engineering for Innovation, University
of Salento, via Monteroni, 73100 Lecce, Italy
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