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Abbasi R, Gnayem H, Sasson Y. Photocatalytic-Driven Antiviral Activities of Heterostructured BiOCl 0.2Br 0.8 - BiOBr Semiconductors. ACS Omega 2024; 9:18183-18190. [PMID: 38680376 PMCID: PMC11044170 DOI: 10.1021/acsomega.3c10310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2023] [Revised: 02/23/2024] [Accepted: 02/28/2024] [Indexed: 05/01/2024]
Abstract
Numerous methods for eliminating severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) are being extensively examined in recent years as a result of the COVID-19 pandemic and its adverse effects on society. Photocatalysis is among the most encouraging solutions since it has the capacity to fully annihilate pathogens, surpassing conventional disinfecting methods. A heterostructured photocatalytic composite of (70%W BiOCl0.2Br0.8 with 30%W BiOBr) was prepared via a simple synthetic route that yielded microspheres ∼3-4 μm in diameter. The composite was evidenced to inactivate stubborn enveloped viruses. By utilizing scanning electron microscopy, transmission electron microscopy, N2 sorption, and X-ray diffraction, the morphology and the chemical composition of the heterostructured composite was revealed. Full elimination of SARS-CoV-2 occurred 5 min following the light-activation of the photocatalytic mixture. Illumination absence bared a slower yet effective result of full viral decomposition at a time span of 25 min. A comparable efficacious outcome was observed in the study case of vesicular stomatitis virus with complete diminishing within 30 min of visible light exposure.
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Affiliation(s)
- Razan Abbasi
- Casali Center of
Applied
Chemistry, Institute of Chemistry, The Hebrew
University of Jerusalem, Jerusalem 9190401, Israel
| | - Hani Gnayem
- Casali Center of
Applied
Chemistry, Institute of Chemistry, The Hebrew
University of Jerusalem, Jerusalem 9190401, Israel
| | - Yoel Sasson
- Casali Center of
Applied
Chemistry, Institute of Chemistry, The Hebrew
University of Jerusalem, Jerusalem 9190401, Israel
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Matsuura R, Kawamura A, Ota R, Fukushima T, Fujimoto K, Kozaki M, Yamashiro M, Somei J, Matsumoto Y, Aida Y. TiO 2-Photocatalyst-Induced Degradation of Dog and Cat Allergens under Wet and Dry Conditions Causes a Loss in Their Allergenicity. Toxics 2023; 11:718. [PMID: 37624223 PMCID: PMC10458468 DOI: 10.3390/toxics11080718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 08/11/2023] [Accepted: 08/19/2023] [Indexed: 08/26/2023]
Abstract
Allergies to dogs and cats can cause enormous damage to human health and the economy. Dog and cat allergens are mainly found in dog and cat dander and are present in small particles in the air and in carpets in homes with dogs and cats. Cleaning houses and washing pets are the main methods for reducing allergens in homes; however, it is difficult to eliminate them completely. Therefore, we aimed to investigate whether a TiO2 photocatalyst could degrade dog and cat allergens. Under wet conditions, exposure to the TiO2 photocatalyst for 24 h degraded Can f1, which is a major dog allergen extracted from dog dander, by 98.3%, and Fel d1, which is a major cat allergen extracted from cat dander, by 93.6-94.4%. Furthermore, under dry conditions, the TiO2 photocatalyst degraded Can f1 and Fel d1 by 92.8% and 59.2-68.4%, respectively. The TiO2 photocatalyst abolished the binding of dog and cat allergens to human IgE by 104.6% and 108.6%, respectively. The results indicated that the TiO2 photocatalyst degraded dog and cat allergens, causing a loss in their allergenicity. Our results suggest that TiO2 photocatalysis can be useful for removing indoor pet allergens and improving the partnership between humans and pets.
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Affiliation(s)
- Ryosuke Matsuura
- Laboratory of Global Infectious Diseases Control Science, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan; (R.M.)
| | - Arisa Kawamura
- Laboratory of Global Infectious Diseases Control Science, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan; (R.M.)
| | - Rizo Ota
- Inuyama Animal General Medical Center, 29 Oomishita, Haguro, Inuyama 484-0894, Japan
| | - Takashi Fukushima
- Kaltech Corporation, Hirotake Bldg. 3-3-7 Bakuromachi, Chuo-ku, Osaka 541-0059, Japan
| | - Kazuhiro Fujimoto
- Kaltech Corporation, Hirotake Bldg. 3-3-7 Bakuromachi, Chuo-ku, Osaka 541-0059, Japan
| | - Masato Kozaki
- Kaltech Corporation, Hirotake Bldg. 3-3-7 Bakuromachi, Chuo-ku, Osaka 541-0059, Japan
| | - Misaki Yamashiro
- Kaltech Corporation, Hirotake Bldg. 3-3-7 Bakuromachi, Chuo-ku, Osaka 541-0059, Japan
| | - Junichi Somei
- Kaltech Corporation, Hirotake Bldg. 3-3-7 Bakuromachi, Chuo-ku, Osaka 541-0059, Japan
| | - Yasunobu Matsumoto
- Laboratory of Global Infectious Diseases Control Science, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan; (R.M.)
- Laboratory of Global Animal Resource Science, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
| | - Yoko Aida
- Laboratory of Global Infectious Diseases Control Science, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan; (R.M.)
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Markowska-Szczupak A, Paszkiewicz O, Yoshiiri K, Wang K, Kowalska E. Can photocatalysis help in the fight against COVID-19 pandemic? Curr Opin Green Sustain Chem 2023; 40:100769. [PMID: 36846296 PMCID: PMC9942773 DOI: 10.1016/j.cogsc.2023.100769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 01/21/2023] [Accepted: 01/24/2023] [Indexed: 06/18/2023]
Abstract
Mould fungi are serious threats to humans and animals (allergen) and might be the main cause of COVID-19-associated pulmonary aspergillosis. The common methods of disinfection are not highly effective against fungi due to the high resistance of fungal spores. Recently, photocatalysis has attracted significant attention towards antimicrobial action. Outstanding properties of titania photocatalysts have already been used in many areas, e.g., for building materials, air conditioner filters, and air purifiers. Here, the efficiency of photocatalytic methods to remove fungi and bacteria (risk factors for Severe Acute Respiratory Syndrome Coronavirus 2 co-infection) is presented. Based on the relevant literature and own experience, there is no doubt that photocatalysis might help in the fight against microorganisms, and thus prevent the severity of COVID-19 pandemic.
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Affiliation(s)
- Agata Markowska-Szczupak
- Department of Chemical and Process Engineering, West Pomeranian University of Technology in Szczecin, Piastow 42, 71-065 Szczecin, Poland
| | - Oliwia Paszkiewicz
- Department of Chemical and Process Engineering, West Pomeranian University of Technology in Szczecin, Piastow 42, 71-065 Szczecin, Poland
| | - Kenta Yoshiiri
- Institute for Catalysis (ICAT), Hokkaido University, N21, W10, 001-0021 Sapporo, Japan
- Graduate School of Environmental Science, Hokkaido University, N10, W5, 060-0810 Sapporo, Japan
| | - Kunlei Wang
- Institute for Catalysis (ICAT), Hokkaido University, N21, W10, 001-0021 Sapporo, Japan
| | - Ewa Kowalska
- Institute for Catalysis (ICAT), Hokkaido University, N21, W10, 001-0021 Sapporo, Japan
- Graduate School of Environmental Science, Hokkaido University, N10, W5, 060-0810 Sapporo, Japan
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
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Negishi N, Yamano R, Hori T, Koura S, Maekawa Y, Sato T. Development of a high-speed bioaerosol elimination system for treatment of indoor air. Build Environ 2023; 227:109800. [PMID: 36407015 PMCID: PMC9651995 DOI: 10.1016/j.buildenv.2022.109800] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 11/07/2022] [Accepted: 11/08/2022] [Indexed: 06/12/2023]
Abstract
We developed a high-speed filterless airflow multistage photocatalytic elbow aerosol removal system for the treatment of bioaerosols such as severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Human-generated bioaerosols that diffuse into indoor spaces are 1-10 μm in size, and their selective and rapid treatment can reduce the risk of SARS-CoV-2 infection. A high-speed airflow is necessary to treat large volumes of indoor air over a short period. The proposed system can be used to eliminate viruses in aerosols by forcibly depositing aerosols in a high-speed airflow onto a photocatalyst placed inside the system through inertial force and turbulent diffusion. Because the main component of the deposited bioaerosol is water, it evaporates after colliding with the photocatalyst, and the nonvolatile virus remains on the photocatalytic channel wall. The residual virus on the photocatalytic channel wall is mineralized via photocatalytic oxidation with UVA-LED irradiation in the channel. When this system was operated in a 4.5 m3 aerosol chamber, over 99.8% aerosols in the size range of 1-10 μm were removed within 15 min. The system continued delivering such performance with the continuous introduction of aerosols. Because this system exhibits excellent aerosol removal ability at a flow velocity of 5 m/s or higher, it is more suitable than other reactive air purification systems for treating large-volume spaces.
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Key Words
- AOP, advanced oxidation process
- Bioaerosol
- CFD, computational fluid dynamics
- COVID-19, coronavirus disease 2019
- DES, detached eddy simulation
- HEPA, high-efficiency particulate absorbing
- ISO, International Standard Organization
- Indoor air
- LES, Large eddy simulation
- RANS, Reynolds-averaged Navier–Stokes
- SARS-CoV-2
- SARS-CoV-2, severe acute respiratory syndrome coronavirus 2
- SCDLP, soya casein-digested lecithin polysorbate
- TiO2 photocatalyst
- UV, ultraviolet
- UVA, ultraviolet-A
- UVC, ultraviolet-C
- Windspeed
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Affiliation(s)
- Nobuaki Negishi
- Environment Management Research Institute, National Institute of Advanced Industrial Science and Technology, 1-16 Onogawa, Tsukuba, 305-8569, Japan
| | - Ryo Yamano
- Department of Applied Chemistry, Chiba Institute of Technology, 2-17-1 Tsudanuma, Narashino, 275-0016, Japan
| | - Tomoko Hori
- Environment Management Research Institute, National Institute of Advanced Industrial Science and Technology, 1-16 Onogawa, Tsukuba, 305-8569, Japan
| | - Setsuko Koura
- Department of Applied Chemistry, Chiba Institute of Technology, 2-17-1 Tsudanuma, Narashino, 275-0016, Japan
| | - Yuji Maekawa
- Kamaishi Electric Machinery Factory Co. Ltd., 9-171-4 Kasshi-cho, Kamaishi, 026-0055, Japan
| | - Taro Sato
- Kamaishi Electric Machinery Factory Co. Ltd., 9-171-4 Kasshi-cho, Kamaishi, 026-0055, Japan
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