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Deng J, Liu Y, Gui S, Yi Q, Nie H. Nano silver oxide-modified activated carbon as a novel catalyst for efficient removal of bacteria and micropollutants in aquatic environment. RSC Adv 2024; 14:30180-30191. [PMID: 39315016 PMCID: PMC11418389 DOI: 10.1039/d4ra04604h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2024] [Accepted: 08/17/2024] [Indexed: 09/25/2024] Open
Abstract
Heterogeneous Fenton process is a promising water treatment technology for sterilization and degradation of organic pollutants, due to the strong oxidation of hydroxyl radicals (OH˙) generated. However, the low H2O2 activation efficiency and the instability of catalyst leading to low OH˙ production restricted development of this technology. Herein, we synthesized a novel porous activated carbon-loaded nano silver oxide (nAg2O/AC) catalyst to enhance the activation of H2O2 for removing bacteria (E. coli) and micropollutants (Tetracycline, TC) from water. In the nAg2O/AC Fenton system, reductive hydroxyl groups on AC accelerated Ag(i)/Ag cycle through mediated electron transfer, which markedly increased H2O2 activation efficiency to 73.7% (About 2.9 times that of traditional Fenton). Hence, nAg2O/AC Fenton achieved up to 6.0 log and 100% removal efficiency for E. coli and TC, respectively. The OH˙ as the major oxidizing species in nAg2O/AC Fenton system was detected and verified by radical scavenging tests and electron spin resonance (ESR) measurement. After 4 and 5 cycles of experiments, the removal of E. coli and TC still reached 5.2 log and 96%, respectively, confirming good stability of nAg2O/AC for considerable application prospects. This study concluded that nAg2O/AC is a promising H2O2 catalyst for simultaneous removal of bacteria and micropollutants in aqueous environment.
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Affiliation(s)
- Jianping Deng
- Institute of Energy Research, Jiangxi Academy of Sciences Nanchang 330096 China
- Jiangxi Carbon Neutralization Research Center Nanchang 330096 China
| | - Yong Liu
- Institute of Energy Research, Jiangxi Academy of Sciences Nanchang 330096 China
- Jiangxi Carbon Neutralization Research Center Nanchang 330096 China
| | - Shuanglin Gui
- Institute of Energy Research, Jiangxi Academy of Sciences Nanchang 330096 China
- Jiangxi Carbon Neutralization Research Center Nanchang 330096 China
| | - Qizhen Yi
- Institute of Energy Research, Jiangxi Academy of Sciences Nanchang 330096 China
- Jiangxi Carbon Neutralization Research Center Nanchang 330096 China
| | - Hanbing Nie
- Institute of Energy Research, Jiangxi Academy of Sciences Nanchang 330096 China
- Jiangxi Carbon Neutralization Research Center Nanchang 330096 China
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2
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Hosseini M, Rodriguez A, Torres JR, Ducker WA. Evaporation from thin porous Coatings: Pore size effects and predictive equation for homogeneous coatings. J Colloid Interface Sci 2024; 678:369-379. [PMID: 39298989 DOI: 10.1016/j.jcis.2024.09.114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2024] [Revised: 09/08/2024] [Accepted: 09/11/2024] [Indexed: 09/22/2024]
Abstract
Evaporation of small water droplets on solids is hindered because surface tension pulls the droplet into a spherical cap that has a small perimeter. Our solution is to coat a solid with a very thin, porous layer into which the droplet flows to create a large-area disk with concomitant high rate of evaporation. We investigate evaporation by varying factors that have not been previously considered: pore size and distribution, contact angle, temperature, and relative humidity (RH).A larger pore size resulted in faster evaporation, which we explain through faster transport within the coating. Even faster evaporation occurred for a bilayer structure with small particles on the air side and larger particles on the solid side. The water advancing contact angle had an insignificant effect in the range from < 10° through to 60°.Our results for different pore sizes, temperature, humidity, and contact angle all collapse onto a single curve when appropriately normalized. This validates an equation that can be used for the evaporation from a homogeneous coating that depends only one empirical factor and the droplet volume. Since the volume is often user-controlled, we envisage that this equation can be used to predict evaporation and guide design of fast-drying coatings.
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Affiliation(s)
- Mohsen Hosseini
- Department of Chemical Engineering and Center for Soft Matter and Biological Physics, Virginia Tech, Blacksburg, VA, 24061, USA.
| | - Alejandro Rodriguez
- Department of Chemical Engineering and Center for Soft Matter and Biological Physics, Virginia Tech, Blacksburg, VA, 24061, USA.
| | - James R Torres
- Oak Ridge National Laboratory, 1 Bethel Valley Road, Oak Ridge, TN 37830, USA.
| | - William A Ducker
- Department of Chemical Engineering and Center for Soft Matter and Biological Physics, Virginia Tech, Blacksburg, VA, 24061, USA.
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3
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Zhan Y, Hu H, Yu Y, Chen C, Zhang J, Jarnda KV, Ding P. Therapeutic strategies for drug-resistant Pseudomonas aeruginosa: Metal and metal oxide nanoparticles. J Biomed Mater Res A 2024; 112:1343-1363. [PMID: 38291785 DOI: 10.1002/jbm.a.37677] [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: 09/11/2023] [Revised: 12/25/2023] [Accepted: 01/16/2024] [Indexed: 02/01/2024]
Abstract
Pseudomonas aeruginosa (PA) is a widely prevalent opportunistic pathogen. Multiple resistant strains of PA have emerged from excessive or inappropriate use of antibiotics, making their eradication increasingly difficult. Therefore, the search for highly efficient and secure novel antimicrobial agents is crucial. According to reports, there is an increasing exploration of nanometals for antibacterial purposes. The antibacterial mechanisms involving the nanomaterials themselves, the release of ions, and the induced oxidative stress causing leakage and damage to biomolecules are widely accepted. Additionally, the study of the cytotoxicity of metal nanoparticles is crucial for their antibacterial applications. This article summarizes the types of metal nanomaterials and metal oxide nanomaterials that can be used against PA, their respective unique antibacterial mechanisms, cytotoxicity, and efforts made to improve antibacterial performance and reduce toxicity, including combination therapy with other materials and antibiotics, as well as green synthesis approaches.
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Affiliation(s)
- Yujuan Zhan
- Xiang Ya School of Public Health, Central South University, Changsha, Hunan, China
- Hunan Provincial Key Laboratory of Clinical Epidemiology, Changsha, Hunan, China
| | - Huiting Hu
- Xiang Ya School of Public Health, Central South University, Changsha, Hunan, China
- Hunan Provincial Key Laboratory of Clinical Epidemiology, Changsha, Hunan, China
| | - Ying Yu
- Xiang Ya School of Public Health, Central South University, Changsha, Hunan, China
- Hunan Provincial Key Laboratory of Clinical Epidemiology, Changsha, Hunan, China
| | - Cuimei Chen
- School of Public Health, Xiangnan University, Chenzhou, Hunan, China
| | - Jingwen Zhang
- Xiang Ya School of Public Health, Central South University, Changsha, Hunan, China
- Hunan Provincial Key Laboratory of Clinical Epidemiology, Changsha, Hunan, China
| | - Kermue Vasco Jarnda
- Xiang Ya School of Public Health, Central South University, Changsha, Hunan, China
- Hunan Provincial Key Laboratory of Clinical Epidemiology, Changsha, Hunan, China
| | - Ping Ding
- Xiang Ya School of Public Health, Central South University, Changsha, Hunan, China
- Hunan Provincial Key Laboratory of Clinical Epidemiology, Changsha, Hunan, China
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4
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Hilton J, Nanao Y, Flokstra M, Askari M, Smith TK, Di Falco A, King PDC, Wahl P, Adamson CS. The role of ion dissolution in metal and metal oxide surface inactivation of SARS-CoV-2. Appl Environ Microbiol 2024; 90:e0155323. [PMID: 38259079 PMCID: PMC10880620 DOI: 10.1128/aem.01553-23] [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: 09/06/2023] [Accepted: 11/28/2023] [Indexed: 01/24/2024] Open
Abstract
Anti-viral surface coatings are under development to prevent viral fomite transmission from high-traffic touch surfaces in public spaces. Copper's anti-viral properties have been widely documented, but the anti-viral mechanism of copper surfaces is not fully understood. We screened a series of metal and metal oxide surfaces for anti-viral activity against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the causative agent of coronavirus disease (COVID-19). Copper and copper oxide surfaces exhibited superior anti-SARS-CoV-2 activity; however, the level of anti-viral activity was dependent on the composition of the carrier solution used to deliver virus inoculum. We demonstrate that copper ions released into solution from test surfaces can mediate virus inactivation, indicating a copper ion dissolution-dependent anti-viral mechanism. The level of anti-viral activity is, however, not dependent on the amount of copper ions released into solution per se. Instead, our findings suggest that degree of virus inactivation is dependent on copper ion complexation with other biomolecules (e.g., proteins/metabolites) in the virus carrier solution that compete with viral components. Although using tissue culture-derived virus inoculum is experimentally convenient to evaluate the anti-viral activity of copper-derived test surfaces, we propose that the high organic content of tissue culture medium reduces the availability of "uncomplexed" copper ions to interact with the virus, negatively affecting virus inactivation and hence surface anti-viral performance. We propose that laboratory anti-viral surface testing should include virus delivered in a physiologically relevant carrier solution (saliva or nasal secretions when testing respiratory viruses) to accurately predict real-life surface anti-viral performance when deployed in public spaces.IMPORTANCEThe purpose of evaluating the anti-viral activity of test surfaces in the laboratory is to identify surfaces that will perform efficiently in preventing fomite transmission when deployed on high-traffic touch surfaces in public spaces. The conventional method in laboratory testing is to use tissue culture-derived virus inoculum; however, this study demonstrates that anti-viral performance of test copper-containing surfaces is dependent on the composition of the carrier solution in which the virus inoculum is delivered to test surfaces. Therefore, we recommend that laboratory surface testing should include virus delivered in a physiologically relevant carrier solution to accurately predict real-life test surface performance in public spaces. Understanding the mechanism of virus inactivation is key to future rational design of improved anti-viral surfaces. Here, we demonstrate that release of copper ions from copper surfaces into small liquid droplets containing SARS-CoV-2 is a mechanism by which the virus that causes COVID-19 can be inactivated.
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Affiliation(s)
- Jane Hilton
- Biomedical Sciences Research Complex, School of Biology, University of St Andrews, St Andrews, Fife, United Kingdom
| | - Yoshiko Nanao
- SUPA, School of Physics and Astronomy, University of St Andrews, St Andrews, Fife, United Kingdom
| | - Machiel Flokstra
- SUPA, School of Physics and Astronomy, University of St Andrews, St Andrews, Fife, United Kingdom
| | - Meisam Askari
- SUPA, School of Physics and Astronomy, University of St Andrews, St Andrews, Fife, United Kingdom
| | - Terry K. Smith
- Biomedical Sciences Research Complex, School of Biology, University of St Andrews, St Andrews, Fife, United Kingdom
| | - Andrea Di Falco
- SUPA, School of Physics and Astronomy, University of St Andrews, St Andrews, Fife, United Kingdom
| | - Phil D. C. King
- SUPA, School of Physics and Astronomy, University of St Andrews, St Andrews, Fife, United Kingdom
| | - Peter Wahl
- SUPA, School of Physics and Astronomy, University of St Andrews, St Andrews, Fife, United Kingdom
| | - Catherine S. Adamson
- Biomedical Sciences Research Complex, School of Biology, University of St Andrews, St Andrews, Fife, United Kingdom
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5
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Hosseini M, Huang J, Williams MD, Gonzalez GA, Jiang X, Falkinham JO, Ducker WA. Robust and Transparent Silver Oxide Coating Fabricated at Room Temperature Kills Clostridioides difficile Spores, MRSA, and Pseudomonas aeruginosa. Microorganisms 2023; 12:83. [PMID: 38257910 PMCID: PMC10818310 DOI: 10.3390/microorganisms12010083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 12/21/2023] [Accepted: 12/27/2023] [Indexed: 01/24/2024] Open
Abstract
Antimicrobial coatings can inhibit the transmission of infectious diseases when they provide a quick kill that is achieved long after the coating application. Here, we describe the fabrication and testing of a glass coating containing Ag2O microparticles that was prepared from sodium silicate at room temperature. The half-lives of both methicillin-resistant Staphylococcus aureus (MRSA) and Pseudomonas aeruginosa on this coating are only 2-4 min. The half-life of Clostridioides difficile spores is about 9-12 min, which is extremely short for a spore. Additional tests on MRSA demonstrate that the coating retains its antimicrobial activity after abrasion and that an increased loading of Ag2O leads to a shorter half-life. This coating combines the properties of optical transparency, robustness, fast kill, and room temperature preparation that are highly desirable for an antimicrobial coating.
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Affiliation(s)
- Mohsen Hosseini
- Department of Chemical Engineering, Center for Soft Matter and Biological Physics, Virginia Tech, Blacksburg, VA 24061, USA; (M.H.); (G.A.G.)
| | - Jinge Huang
- Department of Food, Nutrition, and Packaging Sciences, Clemson University, Clemson, SC 29634, USA; (J.H.); (X.J.)
| | - Myra D. Williams
- Department of Biological Sciences, Virginia Tech, Blacksburg, VA 24061, USA; (M.D.W.); (J.O.F.III)
| | - Gerardo Alexander Gonzalez
- Department of Chemical Engineering, Center for Soft Matter and Biological Physics, Virginia Tech, Blacksburg, VA 24061, USA; (M.H.); (G.A.G.)
| | - Xiuping Jiang
- Department of Food, Nutrition, and Packaging Sciences, Clemson University, Clemson, SC 29634, USA; (J.H.); (X.J.)
| | - Joseph O. Falkinham
- Department of Biological Sciences, Virginia Tech, Blacksburg, VA 24061, USA; (M.D.W.); (J.O.F.III)
| | - William A. Ducker
- Department of Chemical Engineering, Center for Soft Matter and Biological Physics, Virginia Tech, Blacksburg, VA 24061, USA; (M.H.); (G.A.G.)
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6
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Biswas A, Chandel AKS, Anuradha, Vadadoriya N, Mamtani V, Jewrajka SK. Structurally Heterogeneous Amphiphilic Conetworks of Poly(vinyl imidazole) Derivatives with Potent Antimicrobial Properties and Cytocompatibility. ACS APPLIED MATERIALS & INTERFACES 2023; 15:46333-46346. [PMID: 37726206 DOI: 10.1021/acsami.3c09743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/21/2023]
Abstract
We report the construction of amphiphilic conetwork (APCN)-based surfaces with potent antimicrobial activity and biofilm inhibition ability. The construction strategy is based on the separation of lipophilic alkyl groups (>C6) from the cationic network to obtain good antibacterial properties. The reaction of partially alkylated poly(vinyl imidazole) with the activated halide compounds followed by coating a glass or poly(dimethylsiloxane) (PDMS) sheet leads to the formation of the APCN surface. The dangling alkyl chains, crosslinking junctions, and unreacted vinyl imidazole groups are heterogeneously distributed in the APCNs. The swelling, mechanical property, and phase morphology of the APCN films have been evaluated. Bacterial cell disrupting potency of the APCN coatings increases with increasing alkyl chain length from C6 to C18 with somewhat more of an effect on Escherichia coli as compared to Bacillus subtilis bacteria. The minimum inhibitory amount of the APCNs on glass and a hydrophobic PDMS surface is in the range of 0.02-0.04 mg/cm2 depending on the chain length of the alkyl and the degree of quaternization. The effect of the type of crosslinker for the construction of the conetwork on the antimicrobial property has been evaluated to elucidate the exclusive design of the APCNs. The APCN-based coatings provide potent biocidal activity without much negatively affecting the hemocompatibility and cytocompatibility. These APCNs provide a good model system for comparative evaluation of the biocidal property and structural effect on the biocidal activity.
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Affiliation(s)
- Arka Biswas
- Membrane Science and Separation Technology Division, Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI), G. B. Marg, Bhavnagar, Gujarat 364002, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Arvind K Singh Chandel
- Department of Chemical System Engineering, School of Engineering, The University of Tokyo 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Anuradha
- Membrane Science and Separation Technology Division, Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI), G. B. Marg, Bhavnagar, Gujarat 364002, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Nikita Vadadoriya
- Analytical and Environmental Science Division and centralized Instrument Facility, Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI), G. B. Marg, Bhavnagar, Gujarat 364002, India
| | - Vijay Mamtani
- Desalination & Membrane Technology Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| | - Suresh K Jewrajka
- Membrane Science and Separation Technology Division, Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI), G. B. Marg, Bhavnagar, Gujarat 364002, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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7
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Ouyang L, Wang N, Irudayaraj J, Majima T. Virus on surfaces: Chemical mechanism, influence factors, disinfection strategies, and implications for virus repelling surface design. Adv Colloid Interface Sci 2023; 320:103006. [PMID: 37778249 DOI: 10.1016/j.cis.2023.103006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 09/07/2023] [Accepted: 09/22/2023] [Indexed: 10/03/2023]
Abstract
While SARS-CoV-2 is generally under control, the question of variants and infections still persists. Fundamental information on how the virus interacts with inanimate surfaces commonly found in our daily life and when in contact with the skin will be helpful in developing strategies to inhibit the spread of the virus. Here in, a critically important review of current understanding of the interaction between virus and surface is summarized from chemistry point-of-view. The Derjaguin-Landau-Verwey-Overbeek and extended Derjaguin-Landau-Verwey-Overbeek theories to model virus attachments on surfaces are introduced, along with the interaction type and strength, and quantification of each component. The virus survival and transfer are affected by a combination of biological, physical, and chemical parameters, as well as environmental parameters. The surface properties for virus and virus survival on typical surfaces such as metals, plastics, and glass are summarized. Attention is also paid to the transfer of virus to/from surfaces and skin. Typical virus disinfection strategies utilizing heat, light, chemicals, and ozone are discussed together with their disinfection mechanism. In the last section, design principles for virus repelling surface chemistry such as surperhydrophobic or surperhydrophilic surfaces are also introduced, to demonstrate how the integration of surface property control and advanced material fabrication can lead to the development of functional surfaces for mitigating the effect of viral infection upon contact.
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Affiliation(s)
- Lei Ouyang
- State Key Laboratory of Biogeology and Environmental Geology, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, China.
| | - Nan Wang
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Joseph Irudayaraj
- Department of Bioengineering, College of Engineering, University of Illinois Urbana-Champaign, Urbana, IL 61801, United States
| | - Tetsuro Majima
- Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China; The Institute of Scientific and Industrial Research (SANKEN), Osaka University, Ibaraki, Osaka 567-0047, Japan
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8
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Zhang L. Biomedical equipments, vaccine and drug in the prevention, diagnosis and treatment of COVID-19. Heliyon 2023; 9:e18089. [PMID: 37483808 PMCID: PMC10362228 DOI: 10.1016/j.heliyon.2023.e18089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 07/05/2023] [Accepted: 07/06/2023] [Indexed: 07/25/2023] Open
Abstract
SARS-CoV-2 virus caused an infectious disease, named COVID-19. Biomedical equipments, vaccine and drug have played a crucial role in the prevention, diagnosis and treatment. Nevertheless, up to now, there still has been no literature summarizing the diagnosis, prevention and treatment of this infectious disease from the perspective of biomedical equipments. Thus, this review wants to give an overview on the biomedical equipments, vaccine and drug in the prevention, diagnosis and treatment of this disease, and avoids the overlap with previous research, more emphasis on biomedical equipments, and less emphasis on biomaterials. The existing problems in the current research and application were summarized, and the future research direction was proposed, so as to provide reference to deal with similar viral infections in the future.
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9
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Fu H, Yaniv V, Betzalel Y, Mamane H, Gray KA. Creating anti-viral high-touch surfaces using photocatalytic transparent films. CHEMOSPHERE 2023; 323:138280. [PMID: 36868422 DOI: 10.1016/j.chemosphere.2023.138280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2023] [Revised: 02/27/2023] [Accepted: 02/28/2023] [Indexed: 06/18/2023]
Abstract
Antimicrobial and self-cleaning surface coatings are promising tools to combat the growing global threat of infectious diseases and related healthcare-associated infections (HAIs). Although many engineered TiO2-based coating technologies are reporting antibacterial performance, the antiviral performance of these coatings has not been explored. Furthermore, previous studies have underscored the importance of the "transparency" of the coating for surfaces such as the touch screens of medical devices. Hence, in this study, we fabricated a variety of nanoscale TiO2-based transparent thin films (anatase TiO2, anatase/rutile mixed phase TiO2, silver-anatase TiO2 composite, and carbon nanotube-anatase TiO2 composite) via dipping and airbrush spray coating technologies and evaluated their antiviral performance (Bacteriophage MS2 as the model) under dark and illuminated conditions. The thin films showed high surface coverage (ranging from 40 to 85%), low surface roughness (maximum average roughness 70 nm), super-hydrophilicity (water contact angle 6-38.4°), and high transparency (70-80% transmittance under visible light). Antiviral performance of the coatings revealed that silver-anatase TiO2 composite (nAg/nTiO2) coated samples achieved the highest antiviral efficacy (5-6 log reduction) while the other TiO2 coated samples showed fair antiviral results (1.5-3.5 log reduction) after 90 min LED irradiation at 365 nm. Those findings indicate that TiO2-based composite coatings are effective in creating antiviral high-touch surfaces with the potential to control infectious diseases and HAIs.
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Affiliation(s)
- Han Fu
- Department of Civil and Environmental Engineering, Northwestern University, Evanston, IL, 60208, USA
| | - Vered Yaniv
- Water Technologies Laboratory, Faculty of Engineering, Tel Aviv University, Tel Aviv, 69978, Israel
| | - Yifaat Betzalel
- Water Technologies Laboratory, Faculty of Engineering, Tel Aviv University, Tel Aviv, 69978, Israel
| | - Hadas Mamane
- School of Mechanical Engineering, Faculty of Engineering, Tel-Aviv University, Tel Aviv, 69978, Israel.
| | - Kimberly A Gray
- Department of Civil and Environmental Engineering, Northwestern University, Evanston, IL, 60208, USA.
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10
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Hirao R, Shigetoh K, Inagaki S, Ishida N. Virus Inactivation Based on Optimal Surfactant Reservoir of Mesoporous Silica. ACS APPLIED BIO MATERIALS 2023; 6:1032-1040. [PMID: 36780326 PMCID: PMC10031556 DOI: 10.1021/acsabm.2c00901] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Accepted: 02/02/2023] [Indexed: 02/14/2023]
Abstract
SARS-CoV-2 (severe acute respiratory syndrome coronavirus 2) caused a pandemic in 2019 and reaffirmed the importance of environmental sanitation. To prevent the spread of viral infections, we propose the application of a mesoporous silica (MS)-based virus-inactivating material. MS is typically synthesized using a micellar surfactant template; hence, the intermediate before removal of the surfactant template is expected to have a virus-inactivating activity. MS-CTAC particles filled with cetyltrimethylammonium chloride (CTAC), a cationic surfactant with an alkyl chain length of 16, were used to test this hypothesis. Plaque assays revealed that the MS-CTAC particles inactivated the enveloped bacteriophage φ6 by approximately 4 orders of magnitude after a contact time of 10 min. The particles also indicated a similar inactivation effect on the nonenveloped bacteriophage Qβ. In aqueous solution, CTAC loaded on MS-CTAC was released until the equilibrium concentration of loading and release on MS was reached. The released CTAC acted on viruses. Thus, MS is likely a good reservoir for the micellar surfactant. Surfactant readsorption also occurred in the MS particles, and the highest retention rate was observed when micellar surfactants with alkyl chain lengths appropriate for the pore size were used. The paper containing MS-CTAC particles was shown to maintain stable viral inactivation for at least three months in a typical indoor environment. Applying this concept to indoor wallpaper and air-conditioning filters could contribute to the inactivation of viruses in aerosols. These findings open possibilities for mesoporous materials with high surface areas, which can further develop into virus inactivation materials.
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Affiliation(s)
- Rie Hirao
- Toyota
Central R&D Labs., Inc., Nagakute, Aichi 480-1192, Japan
| | | | - Shinji Inagaki
- Toyota
Central R&D Labs., Inc., Nagakute, Aichi 480-1192, Japan
| | - Nobuhiro Ishida
- Toyota
Central R&D Labs., Inc., Nagakute, Aichi 480-1192, Japan
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11
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Abstract
Simultaneous realization of superior mechanical and antifouling properties is critical for a coating. The use of stereoscopic polysiloxanes in place of linear polysiloxanes to fabricate antifouling coatings can combine properties of organic and inorganic materials, i.e., they can exhibit both high hardness and wear resistance from inorganic components as well as the flexibility and tunability from organic components. This strategy is used to prepare hard yet flexible antifouling coatings or polymer-ceramic hybrid antifouling coatings. In this mini-review, we report the recent advances in this field. Particularly, the effects of stereoscopic polysiloxane structures on their mechanical and antifouling properties are discussed in detail.
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12
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de Oliveira MC, Assis M, Simões LG, Minozzi DT, Ribeiro RAP, Andrés J, Longo E. Unraveling the Intrinsic Biocidal Activity of the SiO 2-Ag Composite against SARS-CoV-2: A Joint Experimental and Theoretical Study. ACS APPLIED MATERIALS & INTERFACES 2023; 15:6548-6560. [PMID: 36696256 PMCID: PMC9888415 DOI: 10.1021/acsami.2c21011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Accepted: 01/11/2023] [Indexed: 06/17/2023]
Abstract
The COVID-19 pandemic has emerged as an unprecedented global healthcare emergency, demanding the urgent development of effective materials to inactivate the SARS-CoV-2 virus. This research was planned to disclose the remarkable biocidal activity of SiO2-Ag composites incorporated into low-density polyethylene. For this purpose, a joint experimental and theoretical [based on first-principles calculations at the density functional theory (DFT) level] study is performed. Biological assays showed that this material eliminatesStaphylococcus aureusand SARS-CoV-2 virus in just 2 min. Here, we investigate a previously unexplored process that we postulate may occur along the O2 and H2O adsorption and activation processes of pure and defective SiO2-Ag surfaces for the generation of reactive oxygen species (ROS). The obtained results help us to predict the nature of ROS: superoxide anion radicals, •O2-, hydroxyl radicals, •OH, and hydroperoxyl radicals, •HO2, that destroy and degrade the structure of the SARS-COV-2 virus. This is consistent with the DFT studies, where the energetic, electronic, and magnetic properties of the intermediates show a feasible formation of ROS. Present findings are expected to provide new insights into the relationship among the structure, property, and biocidal activity of semiconductor/metal SiO2-Ag composites.
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Affiliation(s)
- Marisa Carvalho de Oliveira
- Functional Materials Development Center (CDMF),
Federal University of São Carlos—UFSCar,
13565-905São Carlos, São Paulo, Brazil
| | - Marcelo Assis
- Department of Physical and Analytical Chemistry,
University Jaume I—UJI, 12071Castelló de la
Plana, Spain
| | | | | | - Renan A. P. Ribeiro
- Department of Natural Science, Minas
Gerais State University—UEMG, Av. Paraná, 3001, CEP,
35501-170Divinópolis, Minas Gerais, Brazil
| | - Juan Andrés
- Department of Physical and Analytical Chemistry,
University Jaume I—UJI, 12071Castelló de la
Plana, Spain
| | - Elson Longo
- Functional Materials Development Center (CDMF),
Federal University of São Carlos—UFSCar,
13565-905São Carlos, São Paulo, Brazil
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13
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Hossein Mohammadi A, Sobhani-Nasab A, Nejati M, Hadi S, Behjati M, Mirzaii-Dizgah I, Moradi Hasan-Abad A, Karami M. Preparation and Characterization of CuO, Ag2O and ZnO Nanoparticles and Investigation of Their Antibacterial and Anticancer Properties on HCT-116 and C26 Cells. INORG CHEM COMMUN 2023. [DOI: 10.1016/j.inoche.2023.110404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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14
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Heo KJ, Lee DU, Shin JH, Park J, Lee BJ, Shin J, Jeong SB, Hwang GB, MacRobert AJ, Parkin IP, Jung JH, Choi DY. Transparent, Robust, and Photochemical Antibacterial Surface Based on Hydrogen Bonding between a Si-Al and Cationic Dye. ACS APPLIED MATERIALS & INTERFACES 2022; 14:53285-53297. [PMID: 36395463 DOI: 10.1021/acsami.2c16071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Healthcare-associated infections can occur and spread through direct contact with contaminated fomites in a hospital, such as mobile phones, tablets, computer keyboards, doorknobs, and other surfaces. Herein, this study shows a transparent, robust, and visible light-activated antibacterial surface based on hydrogen bonds between a transparent silica-alumina (Si-Al) sol-gel and a visible light-activated photosensitizer, such as crystal violet (CV). The study of the bonding mechanisms revealed that hydrogen bonding predominantly occurs between the N of CV and Al-OH. Apart from CV, Si-Al can be combined with a variety of dyes, highlighting its potential for wide application. The Si-Al@CV film selectively generates singlet oxygen using ambient visible light, triggering potent photochemical antibacterial performance against Gram-positive and Gram-negative bacteria. Additionally, the Si-Al@CV film is stable even after mechanical stability tests such as tape adhesion, scratch, bending, and water immersion. In vitro cytotoxicity tests using C2C12 myoblast cells showed that the Si-Al@CV film is a biocompatible material. This work suggests a new approach for designing a transparent and robust touchscreen surface with photochemical antibacterial capability against healthcare-associated infections.
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Affiliation(s)
- Ki Joon Heo
- Department of Chemistry, University College London, LondonWC1H 0AJ, United Kingdom
- School of Mechanical Engineering, Chonnam National University, Gwangju61186, Republic of Korea
| | - Dong Uk Lee
- Biomedical Manufacturing Technology Center, Korea Institute of Industrial Technology, Yeongcheon38822, Republic of Korea
| | - Jae Hak Shin
- Department of Mechanical Engineering, Sejong University, Seoul05006, Republic of Korea
| | - Junghun Park
- Biomedical Manufacturing Technology Center, Korea Institute of Industrial Technology, Yeongcheon38822, Republic of Korea
| | - Byeong Jin Lee
- Biomedical Manufacturing Technology Center, Korea Institute of Industrial Technology, Yeongcheon38822, Republic of Korea
| | - Juhun Shin
- Department of Chemistry, University College London, LondonWC1H 0AJ, United Kingdom
| | - Sang Bin Jeong
- Department of Mechanical Engineering, Sejong University, Seoul05006, Republic of Korea
| | - Gi Byoung Hwang
- Department of Chemistry, University College London, LondonWC1H 0AJ, United Kingdom
| | - Alexander J MacRobert
- UCL Division of Surgery and Interventional Science, Royal Free Campus, LondonNW3 2PF, United Kingdom
| | - Ivan P Parkin
- Department of Chemistry, University College London, LondonWC1H 0AJ, United Kingdom
| | - Jae Hee Jung
- Department of Mechanical Engineering, Sejong University, Seoul05006, Republic of Korea
| | - Dong Yun Choi
- Biomedical Manufacturing Technology Center, Korea Institute of Industrial Technology, Yeongcheon38822, Republic of Korea
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15
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Dhabarde N, Khaiboullina S, Uppal T, Adhikari K, Verma SC, Subramanian VR. Inactivation of SARS-CoV-2 and Other Human Coronaviruses Aided by Photocatalytic One-Dimensional Titania Nanotube Films as a Self-Disinfecting Surface. ACS APPLIED MATERIALS & INTERFACES 2022; 14:50463-50474. [PMID: 36335476 DOI: 10.1021/acsami.2c03226] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
SARS-CoV-2 and its variants that continue to emerge have necessitated the implementation of effective disinfection strategies. Developing self-disinfecting surfaces can be a potential route for reducing fomite transmissions of infectious viruses. We show the effectiveness of TiO2 nanotubes (T_NTs) on photocatalytic inactivation of human coronavirus, HCoV-OC43, as well as SARS-CoV-2. T_NTs were synthesized by the anodization process, and their impact on photocatalytic inactivation was evaluated by the detection of residual viral genome copies (quantitative real-time quantitative reverse transcription polymerase chain reaction) and infectious viruses (infectivity assays). T_NTs with different structural morphologies, wall thicknesses, diameters, and lengths were prepared by varying the time and applied potential during anodization. The virucidal efficacy was tested under different UV-C exposure times to understand the photocatalytic reaction's kinetics. We showed that the T_NT presence boosts the inactivation process and demonstrated complete inactivation of SARS-CoV-2 as well as HCoV-OC43 within 30 s of UV-C illumination. The remarkable cyclic stability of these T_NTs was revealed through a reusability experiment. The spectroscopic and electrochemical analyses have been reported to correlate and quantify the effects of the physical features of T_NT with photoactivity. We anticipate that the proposed one-dimensional T_NT will be applicable for studying the surface inactivation of other coronaviruses including SARS-CoV-2 variants due to similarities in their genomic structure.
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Affiliation(s)
- Nikhil Dhabarde
- Chemical and Materials Engineering Department, University of Nevada, LME 309, MS 388, Reno, Nevada 89557, United States
| | - Svetlana Khaiboullina
- Department of Microbiology and Immunology, University of Nevada, Reno School of Medicine, 1664 N Virginia Street, Reno, Nevada 89557, United States
| | - Timsy Uppal
- Department of Microbiology and Immunology, University of Nevada, Reno School of Medicine, 1664 N Virginia Street, Reno, Nevada 89557, United States
| | - Kabita Adhikari
- Department of Microbiology and Immunology, University of Nevada, Reno School of Medicine, 1664 N Virginia Street, Reno, Nevada 89557, United States
| | - Subhash C Verma
- Department of Microbiology and Immunology, University of Nevada, Reno School of Medicine, 1664 N Virginia Street, Reno, Nevada 89557, United States
| | - Vaidyanathan Ravi Subramanian
- Chemical and Materials Engineering Department, University of Nevada, LME 309, MS 388, Reno, Nevada 89557, United States
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16
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Cai PF, Li J, Wu XB, Li ZY, Shen J, Nie JJ, Cui ZD, Chen DF, Liang YQ, Zhu SL, Wu SL. ALD-induced TiO 2/Ag nanofilm for rapid surface photodynamic ion sterilization. RARE METALS 2022; 41:4138-4148. [PMID: 36157375 PMCID: PMC9486779 DOI: 10.1007/s12598-022-02096-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 03/06/2022] [Accepted: 03/17/2022] [Indexed: 06/16/2023]
Abstract
The daily life of people in the intelligent age is inseparable from electronic device, and a number of bacteria on touch screens are increasingly threatening the health of users. Herein, a photocatalytic TiO2/Ag thin film was synthesized on a glass by atomic layer deposition and subsequent in situ reduction. Ultraviolet-visible (UV-Vis) spectra showed that this film can harvest the simulated solar light more efficiently than that of pristine TiO2. The antibacterial tests in vitro showed that the antibacterial efficiency of the TiO2/Ag film against S. aureus and E. coli was 98.2% and 98.6%, under visible light irradiation for 5 min. The underlying mechanism was that the in-situ reduction of Ag on the surface of TiO2 reduced the bandgap of TiO2 from 3.44 to 2.61 eV due to the formation of Schottky heterojunction at the interface between TiO2 and Ag. Thus, TiO2/Ag can generate more reactive oxygen species for bacterial inactivation on the surface of electronic screens. More importantly, the TiO2/Ag film had great biocompatibility with/without light irradiation. The platform not only provides a more convenient choice for the traditional antibacterial mode but also has limitless possibilities for application in the field of billions of touch screens.
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Affiliation(s)
- Peng-Fei Cai
- School of Materials Science & Engineering, The Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of China, Tianjin University, Tianjin, 300072 China
| | - Jun Li
- School of Materials Science & Engineering, The Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of China, Tianjin University, Tianjin, 300072 China
| | - Xin-Bao Wu
- Department of Orthopedic Trauma, Beijing Jishuitan Hospital, Beijing, 100035 China
| | - Zhao-Yang Li
- School of Materials Science & Engineering, The Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of China, Tianjin University, Tianjin, 300072 China
| | - Jie Shen
- Shenzhen Key Laboratory of Spine Surgery, Department of Spine Surgery, Peking University Shenzhen Hospital, Shenzhen, 518041 China
| | - Jing-Jun Nie
- Laboratory of Bone Tissue Engineering, Beijing Laboratory of Biomedical Materials, Beijing Research Institute of Orthopaedics and Traumatology, Beijing Jishuitan Hospital, Beijing, 100035 China
| | - Zhen-Duo Cui
- School of Materials Science & Engineering, The Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of China, Tianjin University, Tianjin, 300072 China
| | - Da-Fu Chen
- Laboratory of Bone Tissue Engineering, Beijing Laboratory of Biomedical Materials, Beijing Research Institute of Orthopaedics and Traumatology, Beijing Jishuitan Hospital, Beijing, 100035 China
| | - Yan-Qin Liang
- School of Materials Science & Engineering, The Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of China, Tianjin University, Tianjin, 300072 China
| | - Sheng-Li Zhu
- School of Materials Science & Engineering, The Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of China, Tianjin University, Tianjin, 300072 China
| | - Shui-Lin Wu
- School of Materials Science & Engineering, The Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of China, Tianjin University, Tianjin, 300072 China
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17
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Gudkov SV, Serov DA, Astashev ME, Semenova AA, Lisitsyn AB. Ag 2O Nanoparticles as a Candidate for Antimicrobial Compounds of the New Generation. Pharmaceuticals (Basel) 2022; 15:ph15080968. [PMID: 36015116 PMCID: PMC9415021 DOI: 10.3390/ph15080968] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 07/29/2022] [Accepted: 08/04/2022] [Indexed: 12/16/2022] Open
Abstract
Antibiotic resistance in microorganisms is an important problem of modern medicine which can be solved by searching for antimicrobial preparations of the new generation. Nanoparticles (NPs) of metals and their oxides are the most promising candidates for the role of such preparations. In the last few years, the number of studies devoted to the antimicrobial properties of silver oxide NPs have been actively growing. Although the total number of such studies is still not very high, it is quickly increasing. Advantages of silver oxide NPs are the relative easiness of production, low cost, high antibacterial and antifungal activities and low cytotoxicity to eukaryotic cells. This review intends to provide readers with the latest information about the antimicrobial properties of silver oxide NPs: sensitive organisms, mechanisms of action on microorganisms and further prospects for improving the antimicrobial properties.
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Affiliation(s)
- Sergey V. Gudkov
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 119991 Moscow, Russia
- Correspondence:
| | - Dmitriy A. Serov
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 119991 Moscow, Russia
| | - Maxim E. Astashev
- Prokhorov General Physics Institute of the Russian Academy of Sciences, 119991 Moscow, Russia
| | - Anastasia A. Semenova
- V. M. Gorbatov Federal Research Center for Food Systems of Russian Academy of Sciences, 109316 Moscow, Russia
| | - Andrey B. Lisitsyn
- V. M. Gorbatov Federal Research Center for Food Systems of Russian Academy of Sciences, 109316 Moscow, Russia
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18
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Hosseini M, Poon LLM, Chin AWH, Ducker WA. Effect of Surface Porosity on SARS-CoV-2 Fomite Infectivity. ACS OMEGA 2022; 7:18238-18246. [PMID: 35663285 PMCID: PMC9159070 DOI: 10.1021/acsomega.1c06880] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2021] [Accepted: 03/18/2022] [Indexed: 05/06/2023]
Abstract
Previous reports indicated the low stability of severe actute respiratory syndrome coronovirus 2 (SARS-CoV-2) on various porous surfaces, but the role of porosity was unclear because there was no direct comparison between porous and nonporous solids of the same chemistry. Through comparing pairs of solids with very similar chemistry, we find that porosity is important: porous glass has a much lower infectivity than nonporous glass. However, porosity is not sufficient to lower infectivity; permeability, which is the ability of a liquid to move through a material, is the important parameter. We show this by comparing a pair of porous CuO coatings where the pores are accessible in one case and inaccessible in the other case. When the pores are inaccessible, the infectivity remains similar to that for nonporous solids. Thus, for both glass and CuO, it is the access to porosity that decreases the infectivity of extracted liquid droplets. Having established the importance of permeability, there is the open question of the mechanism of changing the infectivity of SARS-CoV-2. Several hypotheses are possible, such as increasing the difficulty of extracting the virus from the solid, changing the drying time, increasing the surface area of active ingredient, etc. Reverse transcriptase quantitative polymerase chain reaction (RT-qPCR) measurements show that less viral DNA is extracted from a permeable surface, suggesting that the virus becomes trapped in the pores. Finally, we consider the effect of drying. We show that permeability and the water contact angle on the solid have effects on the drying time of a contaminated droplet, which may in turn affect infectivity.
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Affiliation(s)
- Mohsen Hosseini
- Deptartment
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
| | - William A. Ducker
- Deptartment
of Chemical Engineering and Center for Soft Matter and Biological
Physics, Virginia Tech, Blacksburg, Virginia 24061, United States
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