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Lejeune B, Zhang X, Sun S, Hines J, Jinn KW, Reilly AN, Clark HA, Lewis LH. Enhancing Biocidal Capability in Cuprite Coatings. ACS Biomater Sci Eng 2023; 9:4178-4186. [PMID: 37267510 PMCID: PMC10620754 DOI: 10.1021/acsbiomaterials.2c01222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Accepted: 05/12/2023] [Indexed: 06/04/2023]
Abstract
The SARS-CoV-2 global pandemic has reinvigorated interest in the creation and widespread deployment of durable, cost-effective, and environmentally benign antipathogenic coatings for high-touch public surfaces. While the contact-kill capability and mechanism of metallic copper and its alloys are well established, the biocidal activity of the refractory oxide forms remains poorly understood. In this study, commercial cuprous oxide (Cu2O, cuprite) powder was rapidly nanostructured using high-energy cryomechanical processing. Coatings made from these processed powders demonstrated a passive "contact-kill" response to Escherichia coli (E. coli) bacteria that was 4× (400%) faster than coatings made from unprocessed powder. No viable bacteria (>99.999% (5-log10) reduction) were detected in bioassays performed after two hours of exposure of E. coli to coatings of processed cuprous oxide, while a greater than 99% bacterial reduction was achieved within 30 min of exposure. Further, these coatings were hydrophobic and no external energy input was required to activate their contact-kill capability. The upregulated antibacterial response of the processed powders is positively correlated with extensive induced crystallographic disorder and microstrain in the Cu2O lattice accompanied by color changes that are consistent with an increased semiconducting bandgap energy. It is deduced that cryomilling creates well-crystallized nanoscale regions enmeshed within the highly lattice-defective particle matrix. Increasing the relative proportion of lattice-defective cuprous oxide exposed to the environment at the coating surface is anticipated to further enhance the antipathogenic capability of this abundant, inexpensive, robust, and easily handled material for wider application in contact-kill surfaces.
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Affiliation(s)
- Brian
T. Lejeune
- Department
of Chemical Engineering, Northeastern University, 360 Huntington Ave, Boston, Massachusetts 02115, United States
| | - Xiaoyu Zhang
- Department
of Mechanical and Industrial Engineering, Northeastern University, 360 Huntington Ave, Boston, Massachusetts 02115, United States
| | - Su Sun
- Department
of Chemical Engineering, Northeastern University, 360 Huntington Ave, Boston, Massachusetts 02115, United States
| | - Julia Hines
- Department
of Chemical Engineering, Northeastern University, 360 Huntington Ave, Boston, Massachusetts 02115, United States
| | - Kevin W. Jinn
- Department
of Chemical Engineering, Northeastern University, 360 Huntington Ave, Boston, Massachusetts 02115, United States
| | - Ashlyn Neal Reilly
- Department
of Bioengineering, Northeastern University, 360 Huntington Ave, Boston, Massachusetts 02115, United States
| | - Heather A. Clark
- Department
of Bioengineering, Northeastern University, 360 Huntington Ave, Boston, Massachusetts 02115, United States
- Department
of Chemistry, Northeastern University, 360 Huntington Ave, Boston, Massachusetts 02115, United States
| | - Laura H. Lewis
- Department
of Chemical Engineering, Northeastern University, 360 Huntington Ave, Boston, Massachusetts 02115, United States
- Department
of Mechanical and Industrial Engineering, Northeastern University, 360 Huntington Ave, Boston, Massachusetts 02115, United States
- The
George J. Kostas Research Institute for Homeland Security, Northeastern University, 360 Huntington Ave, Boston, Massachusetts 02115, United States
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2
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Behzadinasab S, Williams MD, Aktuglu M, Falkinham JO, Ducker WA. Porous Antimicrobial Coatings for Killing Microbes within Minutes. ACS APPLIED MATERIALS & INTERFACES 2023; 15:15120-15128. [PMID: 36920368 DOI: 10.1021/acsami.2c22240] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Antimicrobial coatings can be used to reduce the transmission of infectious agents that are spread by contact. An effective coating should kill microbes in the time between users, which is sometimes minutes or less. Fast killing requires fast transport, and our proposed method of fast transport is a porous coating where the contaminated liquid imbibes (infiltrates) into the pores to achieve rapid contact with active material inside the pores. We test the hypothesis that a porous antimicrobial coating will enable faster inactivation of microorganisms than a planar coating of the same material. We use hydrophilic pores with dimensions of 5-100 μm such that liquid droplets imbibe in seconds, and from there transport distances and times are short, defined by the pore size rather than the droplet size. Our coating has two levels of structure: (A) a porous scaffold and (B) an antimicrobial coating within the pore structure containing the active ingredient. Two scaffolds are studied: stainless steel and poly(methyl methacrylate) (PMMA). The active ingredient is electrolessly deposited copper. To enhance adhesion and growth of copper, a layer of polydopamine (PDA) is deposited on the scaffold prior to deposition of the copper. This porous copper coating kills 99.84% of Pseudomonas aeruginosa within 3 min, which is equivalent to a half-life of 27 s. In contrast, the same layer of PDA/copper on a nonporous coating kills 79.65% in the same time frame, consistent with the hypothesis that the killing rate is increased by the addition of porosity. Using the porous PMMA scaffold, the porous antimicrobial coating kills >99.99% P. aeruginosa in 5 min, which is equivalent to a half-life of 21 s. The higher rate of kill on the porous antimicrobial solid is appropriate for hindering the spread of infectious agents on common-use objects.
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Affiliation(s)
- Saeed Behzadinasab
- Department of Chemical Engineering, Virginia Tech, Blacksburg, Virginia 24061, United States
- Center for Soft Matter and Biological Physics, Virginia Tech, Blacksburg, Virginia 24061, United States
- Macromolecules Innovation Institute, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Myra D Williams
- Department of Biological Sciences, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Mete Aktuglu
- Department of Chemical Engineering, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Joseph O Falkinham
- Department of Biological Sciences, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - William A Ducker
- Department of Chemical Engineering, Virginia Tech, Blacksburg, Virginia 24061, United States
- Center for Soft Matter and Biological Physics, Virginia Tech, Blacksburg, Virginia 24061, United States
- Macromolecules Innovation Institute, Virginia Tech, Blacksburg, Virginia 24061, United States
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3
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Qiu B, Wang M, Yu W, Li S, Zhang W, Wang S, Shi J. Environmentally Friendly and Broad-Spectrum Antibacterial Poly(hexamethylene guanidine)-Modified Polypropylene and Its Antifouling Application. Polymers (Basel) 2023; 15:polym15061521. [PMID: 36987301 PMCID: PMC10059264 DOI: 10.3390/polym15061521] [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: 02/19/2023] [Revised: 03/13/2023] [Accepted: 03/14/2023] [Indexed: 03/30/2023] Open
Abstract
Biological fouling is one of the main reasons that limits the application of traditional polypropylene (PP) fishing nets in aquaculture. Here, a new environmentally friendly and broad-spectrum antibacterial agent called cationic poly(hexamethylene guanidine) (PHMG) was grafted onto PP molecular chains via permanent chemical bonding to inhibit the biological fouling. The antibacterial monofilaments were obtained by blending different contents of PP-g-PHMG with PP by melt spinning. FTIR results found PHMG to be stably present in the mixed monofilaments after high-temperature melt spinning molding. The crystallinity, relaxation behavior, mechanical properties, water absorptivity, and antibacterial and antifouling efficiencies of the PP-g-PHMG/PP blends were strongly dependent on PP-g-PHMG. The crystallinity increased with increasing PP-g-PHMG content. Adding PP-g-PHMG improved the breaking strength, knotting strength, and elongation at the break for all ratios of PP-g-PHMG/PP blends. However, the water absorption caused by PHMG is low, ranging between 2.48% and 3.45% for the PP-g-PHMG/PP monofilaments. The monofilaments showed excellent nonleaching antimicrobial activities against Staphylococcus aureus and Escherichia coli. The electrostatic adsorption of the negatively charged bacteria and the destruction of their cell membrane allowed the growth inhibition to reach 99.69% with a PP-g-PHMG content of 40%. The marine fish farming experiment also showed a long-term antifouling effect.
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Affiliation(s)
- Biwei Qiu
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China
| | - Meng Wang
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China
- East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, China
| | - Wenwen Yu
- College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
| | - Shouhu Li
- East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, China
| | - Wenyang Zhang
- East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, China
| | - Shuting Wang
- School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China
- East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, China
| | - Jiangao Shi
- East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, China
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4
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Zheng W, Bao Q, Chen L, Zhu C. Selection of pH Value in One-Step Preparation of High-Efficiency Cuprous Oxide Photocatalyst by Electrochemical Method. RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A 2022. [DOI: 10.1134/s0036024422120305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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5
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Copper nanoparticles and their oxides: optical, anticancer and antibacterial properties. INTERNATIONAL NANO LETTERS 2022. [DOI: 10.1007/s40089-022-00380-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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6
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Ma X, Zhou S, Xu X, Du Q. Copper-containing nanoparticles: Mechanism of antimicrobial effect and application in dentistry-a narrative review. Front Surg 2022; 9:905892. [PMID: 35990090 PMCID: PMC9388913 DOI: 10.3389/fsurg.2022.905892] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 07/19/2022] [Indexed: 11/18/2022] Open
Abstract
Copper has been used as an antimicrobial agent long time ago. Nowadays, copper-containing nanoparticles (NPs) with antimicrobial properties have been widely used in all aspects of our daily life. Copper-containing NPs may also be incorporated or coated on the surface of dental materials to inhibit oral pathogenic microorganisms. This review aims to detail copper-containing NPs' antimicrobial mechanism, cytotoxic effect and their application in dentistry.
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Affiliation(s)
- Xinru Ma
- Department of Stomatology, Sichuan Provincial People’s Hospital, University of Electronic Science and Technology of China, Chengdu, China
- Department of Stomatology, Hospital of Chengdu Office of People's Government of Tibetan Autonomous Region (West China Hospital Sichuan University Tibet Chengdu Branch Hospital), Chengdu, China
| | - Shiyu Zhou
- Department of Stomatology, Sichuan Provincial People’s Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Xiaoling Xu
- School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, China
| | - Qin Du
- Department of Stomatology, Sichuan Provincial People’s Hospital, University of Electronic Science and Technology of China, Chengdu, China
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7
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Behzadinasab S, Hosseini M, Williams MD, Ivester HM, Allen IC, Falkinham JO, Ducker WA. Antimicrobial Activity of Cuprous Oxide and Cupric Oxide-Coated Surfaces. J Hosp Infect 2022; 129:58-64. [DOI: 10.1016/j.jhin.2022.07.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 07/20/2022] [Accepted: 07/25/2022] [Indexed: 11/16/2022]
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8
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Fonseca S, Cayer MP, Ahmmed KMT, Khadem-Mohtaram N, Charette SJ, Brouard D. Characterization of the Antibacterial Activity of an SiO2 Nanoparticular Coating to Prevent Bacterial Contamination in Blood Products. Antibiotics (Basel) 2022; 11:antibiotics11010107. [PMID: 35052984 PMCID: PMC8773057 DOI: 10.3390/antibiotics11010107] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 01/10/2022] [Accepted: 01/10/2022] [Indexed: 11/16/2022] Open
Abstract
Technological innovations and quality control processes within blood supply organizations have significantly improved blood safety for both donors and recipients. Nevertheless, the risk of transfusion-transmitted infection remains non-negligible. Applying a nanoparticular, antibacterial coating at the surface of medical devices is a promising strategy to prevent the spread of infections. In this study, we characterized the antibacterial activity of an SiO2 nanoparticular coating (i.e., the “Medical Antibacterial and Antiadhesive Coating” [MAAC]) applied on relevant polymeric materials (PM) used in the biomedical field. Electron microscopy revealed a smoother surface for the MAAC-treated PM compared to the reference, suggesting antiadhesive properties. The antibacterial activity was tested against selected Gram-positive and Gram-negative bacteria in accordance with ISO 22196. Bacterial growth was significantly reduced for the MAAC-treated PVC, plasticized PVC, polyurethane and silicone (90–99.999%) in which antibacterial activity of ≥1 log reduction was reached for all bacterial strains tested. Cytotoxicity was evaluated following ISO 10993-5 guidelines and L929 cell viability was calculated at ≥90% in the presence of MAAC. This study demonstrates that the MAAC could prevent bacterial contamination as demonstrated by the ISO 22196 tests, while further work needs to be done to improve the coating processability and effectiveness of more complex matrices.
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Affiliation(s)
- Sahra Fonseca
- Héma-Québec, Medical Affairs and Innovation, 1070, Avenue des Sciences-de-la-Vie, Quebec, QC G1V 5C3, Canada; (S.F.); (M.-P.C.)
- Department of Biochemistry, Microbiology and Bioinformatics, Faculty of Science and Engineering, Laval University, Quebec, QC G1V 0A6, Canada;
| | - Marie-Pierre Cayer
- Héma-Québec, Medical Affairs and Innovation, 1070, Avenue des Sciences-de-la-Vie, Quebec, QC G1V 5C3, Canada; (S.F.); (M.-P.C.)
| | | | | | - Steve J. Charette
- Department of Biochemistry, Microbiology and Bioinformatics, Faculty of Science and Engineering, Laval University, Quebec, QC G1V 0A6, Canada;
| | - Danny Brouard
- Héma-Québec, Medical Affairs and Innovation, 1070, Avenue des Sciences-de-la-Vie, Quebec, QC G1V 5C3, Canada; (S.F.); (M.-P.C.)
- Department of Chemistry, Faculty of Science and Engineering, Laval University, Quebec, QC G1V 0A6, Canada
- Correspondence:
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9
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Zhou X, Yin A, Sheng J, Wang J, Chen H, Fang Y, Zhang K. In situ deposition of nano Cu 2O on electrospun chitosan nanofibrous scaffolds and their antimicrobial properties. Int J Biol Macromol 2021; 191:600-607. [PMID: 34582906 DOI: 10.1016/j.ijbiomac.2021.09.121] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Revised: 09/07/2021] [Accepted: 09/19/2021] [Indexed: 12/30/2022]
Abstract
In order to obtain a synergistic antimicrobial effect of cuprous oxide nanoparticles (Cu2O NPs) and chitosan (CS) nanofibers, the nano Cu2O/CS nanofibrous scaffolds were synthesized in situ via two subsequent steps of chelation and reduction. The Cu2+ were stably chelated on CS nanofibrous scaffolds through the coordination of amino group (-NH2) and hydroxyl group (-OH) on CS with Cu2+, and then the chelated Cu2+ were reduced to nano Cu2O by Vitamin C under alkaline conditions. And by the measurements of XRD, XPS and FTIR-ATR, the results showed that Cu2O NPs were successfully deposited on the CS nanofibrous scaffolds. SEM clarified that the particle size of Cu2O gradually decreased and the shape changed from cubic to irregular with the increase of CuSO4 concentration. With the CuSO4 concentration of 0.02 and 0.04 mol·L-1, the Cu2O/CS nanofibrous scaffolds presented outstanding hydrophilicity and antibacterial activity against Gram-negative Escherichia coli (E. coli) and Gram-positive Staphylococcus aureus (S. aureus) comparing to the CS nanofibrous scaffolds, meanwhile, they possessed good biocompatibility. This kind of nanofibrous scaffolds deposited with nano Cu2O would have broad application prospects in the field of antibacterial biomaterials.
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Affiliation(s)
- Xinglu Zhou
- College of Materials and Textile Engineering, Nanotechnology Research Institute, Jiaxing University, Jiaxing 314001, China
| | - Anlin Yin
- College of Materials and Textile Engineering, Nanotechnology Research Institute, Jiaxing University, Jiaxing 314001, China; Key Laboratory of Yarn Materials Forming and Composite Processing Technology of Zhejiang Province, Jiaxing University, Jiaxing 314001, China
| | - Junlu Sheng
- College of Materials and Textile Engineering, Nanotechnology Research Institute, Jiaxing University, Jiaxing 314001, China; Key Laboratory of Yarn Materials Forming and Composite Processing Technology of Zhejiang Province, Jiaxing University, Jiaxing 314001, China
| | - Jiayan Wang
- College of Materials and Textile Engineering, Nanotechnology Research Institute, Jiaxing University, Jiaxing 314001, China
| | - Huifen Chen
- College of Materials and Textile Engineering, Nanotechnology Research Institute, Jiaxing University, Jiaxing 314001, China
| | - Yun Fang
- College of Materials and Textile Engineering, Nanotechnology Research Institute, Jiaxing University, Jiaxing 314001, China
| | - Kuihua Zhang
- College of Materials and Textile Engineering, Nanotechnology Research Institute, Jiaxing University, Jiaxing 314001, China; Key Laboratory of Yarn Materials Forming and Composite Processing Technology of Zhejiang Province, Jiaxing University, Jiaxing 314001, China.
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10
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Behzadinasab S, Williams MD, Hosseini M, Poon LLM, Chin AWH, Falkinham JO, Ducker WA. Transparent and Sprayable Surface Coatings that Kill Drug-Resistant Bacteria Within Minutes and Inactivate SARS-CoV-2 Virus. ACS APPLIED MATERIALS & INTERFACES 2021; 13:54706-54714. [PMID: 34766745 PMCID: PMC8609913 DOI: 10.1021/acsami.1c15505] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Accepted: 10/27/2021] [Indexed: 05/05/2023]
Abstract
Antimicrobial coatings are one method to reduce the spread of microbial diseases. Transparent coatings preserve the visual properties of surfaces and are strictly necessary for applications such as antimicrobial cell phone screens. This work describes transparent coatings that inactivate microbes within minutes. The coatings are based on a polydopamine (PDA) adhesive, which has the useful property that the monomer can be sprayed, and then the monomer polymerizes in a conformal film at room temperature. Two coatings are described (1) a coating where PDA is deposited first and then a thin layer of copper is grown on the PDA by electroless deposition (PDA/Cu) and (2) a coating where a suspension of Cu2O particles in a PDA solution is deposited in a single step (PDA/Cu2O). In the second coating, PDA menisci bind Cu2O particles to the solid surface. Both coatings are transparent and are highly efficient in inactivating microbes. PDA/Cu kills >99.99% of Pseudomonas aeruginosa and 99.18% of methicillin-resistant Staphylococcus aureus (MRSA) in only 10 min and inactivates 99.98% of SARS-CoV-2 virus in 1 h. PDA/Cu2O kills 99.94% of P. aeruginosa and 96.82% of MRSA within 10 min and inactivates 99.88% of SARS-CoV-2 in 1 h.
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Affiliation(s)
- Saeed Behzadinasab
- Department of Chemical Engineering and Center for Soft Matter and Biological Physics, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Myra D Williams
- Department of Biological Sciences, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Mohsen Hosseini
- Department of Chemical Engineering and Center for Soft Matter and Biological Physics, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Leo L M Poon
- School of Public Health, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, China
- Centre for Immunity and Infection, Hong Kong Science Park, Hong Kong, China
- HKU-Pasteur Research Pole, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Alex W H Chin
- School of Public Health, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, China
- Centre for Immunity and Infection, Hong Kong Science Park, Hong Kong, China
| | - Joseph O Falkinham
- Department of Biological Sciences, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - William A Ducker
- Department of Chemical Engineering and Center for Soft Matter and Biological Physics, Virginia Tech, Blacksburg, Virginia 24061, United States
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11
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Kumar S, Ye F, Dobretsov S, Dutta J. Nanocoating Is a New Way for Biofouling Prevention. FRONTIERS IN NANOTECHNOLOGY 2021. [DOI: 10.3389/fnano.2021.771098] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Biofouling is a major concern to the maritime industry. Biofouling increases fuel consumption, accelerates corrosion, clogs membranes and pipes, and reduces the buoyancy of marine installations, such as ships, platforms, and nets. While traditionally marine installations are protected by toxic biocidal coatings, due to recent environmental concerns and legislation, novel nanomaterial-based anti-fouling coatings are being developed. Hybrid nanocomposites of organic-inorganic materials give a possibility to combine the characteristics of both groups of material generating opportunities to prevent biofouling. The development of bio-inspired surface designs, progress in polymer science and advances in nanotechnology is significantly contributing to the development of eco-friendly marine coatings containing photocatalytic nanomaterials. The review mainly discusses photocatalysis, antifouling activity, and formulation of coatings using metal and metal oxide nanomaterials (nanoparticles, nanowires, nanorods). Additionally, applications of nanocomposite coatings for inhibition of micro- and macro-fouling in marine environments are reviewed.
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12
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Shan Z, Yang Y, Shi H, Zhu J, Tan X, Luan Y, Jiang Z, Wang P, Qin J. Hollow Dodecahedra Graphene Oxide- Cuprous Oxide Nanocomposites With Effective Photocatalytic and Bactericidal Activity. Front Chem 2021; 9:755836. [PMID: 34568290 PMCID: PMC8458578 DOI: 10.3389/fchem.2021.755836] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Accepted: 08/23/2021] [Indexed: 11/16/2022] Open
Abstract
In this study, a kind of graphene oxide-cuprous oxide (GO-Cu2O) nanocomposites was fabricated with different morphologies to serve as a photocatalytic material for the degradation of organic/inorganic dyes under visible light and the bactericidal effect against pathogenic bacteria. The GO-Cu2O was prepared with solid cube and hollow dodecahedra morphologies through in-situ synthesis, and characterized by scanning electron microscopy (SEM), transmission electron microscope (TEM), X-ray diffraction (XRD), Raman, Ultraviolet and visible spectrophotometry (UV/vis), and Fourier transform infrared spectroscopy. In comparison with cubic GO-Cu2O, the absorption and degradation efficiency of the GO-Cu2O dodecahedra (GCD) composite in Methyl orange (MO), Rhodamine B (RhB), and phenol was higher owning to the more active sites for the simultaneous dye and light absorption of hollow structure. The antibacterial effect of the GO-Cu2O dodecahedra was examined by the flat colony counting method with an excellent bactericidal effect against pathogenic bacteria. The possible mechanism for the preparation of GCD possessing the enhancement of the visible-light photocatalytic and antibacterial efficiencies were also investigated.
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Affiliation(s)
- Zezhi Shan
- Tongji University Cancer Center, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, China.,Department of Colorectal Surgery, Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Yanrong Yang
- Tongji University Cancer Center, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Haoran Shi
- School of Life Sciences, Shandong University of Technology, Zibo, China
| | - Jiali Zhu
- Tongji University Cancer Center, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Xiao Tan
- Tongji University Cancer Center, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Yi Luan
- Tongji University Cancer Center, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Zhenqi Jiang
- Institute of Engineering Medicine, Beijing Institute of Technology, Beijing, China
| | - Ping Wang
- Tongji University Cancer Center, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Jieling Qin
- Tongji University Cancer Center, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, China
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13
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Abstract
Abstract
Antibacterial epoxy resins (EP) have great potential in medical and electronic fields. During the process of extracting artemisinin from Artemisia annua, artemisia naphtha (AN) is generated as waste. The components of AN show antibacterial activity, and hence, it is introduced as a novel antibacterial agent in the epoxy matrix. In this study, the properties of epoxy resins with various AN loading were investigated. The results showed that AN/EP composites presented strong antibacterial activity against Escherichia coli and Staphylococcus aureus at the sterilization ratio of 100% against E. coli and 99.96% against S. aureus, respectively. Meanwhile, the thermal properties (curing temperature and glass transition temperature) of AN/EP composites remained well, and the mechanical property was even improved. Especially, the flexural strength of AN/EP composites could be reinforced by 62.9% when the content of AN was up to 5 wt%. For comparison, Artemisia annua powder (AAP), which was directly smashed from natural A. annua, was also mixed with epoxy resins as an antibacterial agent and showed excellent antibacterial property. Therefore, antibacterial epoxy composites containing A. annua waste as a natural resource with the enhanced mechanical property may have enormous potential in future biological and healthcare fields.
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14
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Wu Y, Xu L, Jiang Y. Preparation and Thermal Properties of Modified Cu 2O/Polypropylene (PP) Composite. MATERIALS 2020; 13:ma13020309. [PMID: 31936640 PMCID: PMC7013393 DOI: 10.3390/ma13020309] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Revised: 01/07/2020] [Accepted: 01/07/2020] [Indexed: 11/16/2022]
Abstract
A uniform, monodispersed superfine cuprous oxide (Cu2O) sphere with a mean diameter of 850 nm has been synthesized by solution reduction. The study reported the synthesis and thermal properties of Cu2O/PP composites for the first time. The surface modification of the superfine Cu2O sphere was carried out by using a silane coupling agent KH-570. Fourier-transform infrared (FTIR) spectroscopy and the thermogravimetric analysis (TGA) curve revealed that the Cu2O had been successfully modified by silane coupling agent KH570. The scanning electron microscope (SEM) shows that the modified Cu2O can be uniformly dispersed in the polypropylene (PP) matrix, because through surface modification, there are some active functional groups on its surface, such as the ester group, which improves its compatibility with the PP matrix. The thermal stability of Cu2O/PP composites was improved by adding a small amount of Cu2O (1 wt % of PP). Therefore, based on the potential bacteriostasis of cuprous oxide, the low cost of PP and the results of this study, it is predicted that Cu2O/PP composites can be used in infant preparation (such as milk bottles) with low cost and good thermal stability in the near future.
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Affiliation(s)
- Yurong Wu
- School of Materials Science and Engineering, Xiamen University of Technology, Xiamen 361024, China;
| | - Longshan Xu
- School of Materials Science and Engineering, Xiamen University of Technology, Xiamen 361024, China;
- Correspondence: ; Tel.: +86-592-629-1328
| | - Yanying Jiang
- School of Information and Communication, Guilin University of Electronic Technology, Guilin 541000, China;
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15
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Preparation and Formula Analysis of Anti-Biofouling Titania–Polyurea Spray Coating with Nano/Micro-Structure. COATINGS 2019. [DOI: 10.3390/coatings9090560] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
This paper proposes the preparation and formula analysis of anti-biofouling Titania–polyurea (TiO2–SPUA) spray coating, which uses nano-scale antibacterial and photocatalytic agents, titanium dioxide, to construct regularly hydrophobic surface texture on the polyurea coating system. Through formulating analysis of anti-biofouling performance, it is found the causal factors include antibacterial TiO2, surface wettability and morphology in order of their importance. The most optimized formula group is able to obtain uniform surface textures, high contact angle (91.5°), low surface energy (32.5 mJ/m2), and strong hardness (74 A). Moreover, this newly fabricated coating can effectively prevent Pseudomonas aeruginosa and biofilm from enriching on the surface, and there is no toxins release from the coating itself, which makes it eco-friendly, even after long-time exposure. These studies provide insights to the relative importance of physiochemical properties of Titania–polyurea spray coatings for further use in marine, as well as bio medical engineering.
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Verma N, Kumar N. Synthesis and Biomedical Applications of Copper Oxide Nanoparticles: An Expanding Horizon. ACS Biomater Sci Eng 2019; 5:1170-1188. [DOI: 10.1021/acsbiomaterials.8b01092] [Citation(s) in RCA: 133] [Impact Index Per Article: 26.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Nishant Verma
- National Centre for Flexible Electronics, Indian Institute of Technology, Kanpur, Kalyanpur, Kanpur, Uttar Pradesh−208016, India
| | - Nikhil Kumar
- Department of Biotechnology, National Institute of Technology, Raipur, G.E. Road, Opposite Science College, Raipur, Chhattisgarh−492010, India
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Yang Z, Hao X, Chen S, Ma Z, Wang W, Wang C, Yue L, Sun H, Shao Q, Murugadoss V, Guo Z. Long-term antibacterial stable reduced graphene oxide nanocomposites loaded with cuprous oxide nanoparticles. J Colloid Interface Sci 2019; 533:13-23. [DOI: 10.1016/j.jcis.2018.08.053] [Citation(s) in RCA: 193] [Impact Index Per Article: 38.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2018] [Revised: 08/02/2018] [Accepted: 08/17/2018] [Indexed: 12/20/2022]
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