Inactivation of SARS-CoV-2 and photocatalytic degradation by TiO2 photocatalyst coatings
Abstract The novel severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) causative agent of the COVID-19, which is a global pandemic, has infected more than 552 million people, and killed more than 6.3 million people. SARS-CoV-2 can be transmitted through airborne route in addition to direct...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2022-09-01
|
| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-022-20459-2 |
| _version_ | 1797998299355021312 |
|---|---|
| author | Yun Lu Sujun Guan Liang Hao Hiroyuki Yoshida Shohei Nakada Taisei Takizawa Takaomi Itoi |
| author_facet | Yun Lu Sujun Guan Liang Hao Hiroyuki Yoshida Shohei Nakada Taisei Takizawa Takaomi Itoi |
| author_sort | Yun Lu |
| collection | DOAJ |
| description | Abstract The novel severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) causative agent of the COVID-19, which is a global pandemic, has infected more than 552 million people, and killed more than 6.3 million people. SARS-CoV-2 can be transmitted through airborne route in addition to direct contact and droplet modes, the development of disinfectants that can be applied in working spaces without evacuating people is urgently needed. TiO2 is well known with some features of the purification, antibacterial/sterilization, making it could be developed disinfectants that can be applied in working spaces without evacuating people. Facing the severe epidemic, we expect to fully expand the application of our proposed effective approach of mechanical coating technique (MCT), which can be prepared on a large-scale fabrication of an easy-to-use TiO2/Ti photocatalyst coating, with hope to curb the epidemic. The photocatalytic inactivation of SARS-CoV-2 and influenza virus, and the photocatalytic degradation of acetaldehyde (C2H4O) and formaldehyde (CH2O) has been investigated. XRD and SEM results show that anatase TiO2 successfully coats on the surface of Ti coatings, while the crystal structure of anatase TiO2 can be increased during the following oxidation in air. The catalytic activity towards methylene blue of TiO2/Ti coating balls has been significantly enhanced by the followed oxidation in air, showing a very satisfying photocatalytic degradation of C2H4O and CH2O. Notably, the TiO2/Ti photocatalyst coating balls demonstrate a significant antiviral activity, with a decrease rate of virus reached 99.96% for influenza virus and 99.99% for SARS-CoV-2. |
| first_indexed | 2024-04-11T10:46:29Z |
| format | Article |
| id | doaj.art-35193671d0544142a2ee8ac67e030274 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-11T10:46:29Z |
| publishDate | 2022-09-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-35193671d0544142a2ee8ac67e0302742022-12-22T04:29:01ZengNature PortfolioScientific Reports2045-23222022-09-011211810.1038/s41598-022-20459-2Inactivation of SARS-CoV-2 and photocatalytic degradation by TiO2 photocatalyst coatingsYun Lu0Sujun Guan1Liang Hao2Hiroyuki Yoshida3Shohei Nakada4Taisei Takizawa5Takaomi Itoi6Department of Mechanical Engineering, Chiba UniversityBio-Nano Electronics Research Centre, Toyo UniversityCollege of Mechanical Engineering, Tianjin University of Science and TechnologyChiba Industrial Technology Research InstituteDepartment of Mechanical Engineering, Chiba UniversityDepartment of Mechanical Engineering, Chiba UniversityDepartment of Mechanical Engineering, Chiba UniversityAbstract The novel severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) causative agent of the COVID-19, which is a global pandemic, has infected more than 552 million people, and killed more than 6.3 million people. SARS-CoV-2 can be transmitted through airborne route in addition to direct contact and droplet modes, the development of disinfectants that can be applied in working spaces without evacuating people is urgently needed. TiO2 is well known with some features of the purification, antibacterial/sterilization, making it could be developed disinfectants that can be applied in working spaces without evacuating people. Facing the severe epidemic, we expect to fully expand the application of our proposed effective approach of mechanical coating technique (MCT), which can be prepared on a large-scale fabrication of an easy-to-use TiO2/Ti photocatalyst coating, with hope to curb the epidemic. The photocatalytic inactivation of SARS-CoV-2 and influenza virus, and the photocatalytic degradation of acetaldehyde (C2H4O) and formaldehyde (CH2O) has been investigated. XRD and SEM results show that anatase TiO2 successfully coats on the surface of Ti coatings, while the crystal structure of anatase TiO2 can be increased during the following oxidation in air. The catalytic activity towards methylene blue of TiO2/Ti coating balls has been significantly enhanced by the followed oxidation in air, showing a very satisfying photocatalytic degradation of C2H4O and CH2O. Notably, the TiO2/Ti photocatalyst coating balls demonstrate a significant antiviral activity, with a decrease rate of virus reached 99.96% for influenza virus and 99.99% for SARS-CoV-2.https://doi.org/10.1038/s41598-022-20459-2 |
| spellingShingle | Yun Lu Sujun Guan Liang Hao Hiroyuki Yoshida Shohei Nakada Taisei Takizawa Takaomi Itoi Inactivation of SARS-CoV-2 and photocatalytic degradation by TiO2 photocatalyst coatings Scientific Reports |
| title | Inactivation of SARS-CoV-2 and photocatalytic degradation by TiO2 photocatalyst coatings |
| title_full | Inactivation of SARS-CoV-2 and photocatalytic degradation by TiO2 photocatalyst coatings |
| title_fullStr | Inactivation of SARS-CoV-2 and photocatalytic degradation by TiO2 photocatalyst coatings |
| title_full_unstemmed | Inactivation of SARS-CoV-2 and photocatalytic degradation by TiO2 photocatalyst coatings |
| title_short | Inactivation of SARS-CoV-2 and photocatalytic degradation by TiO2 photocatalyst coatings |
| title_sort | inactivation of sars cov 2 and photocatalytic degradation by tio2 photocatalyst coatings |
| url | https://doi.org/10.1038/s41598-022-20459-2 |
| work_keys_str_mv | AT yunlu inactivationofsarscov2andphotocatalyticdegradationbytio2photocatalystcoatings AT sujunguan inactivationofsarscov2andphotocatalyticdegradationbytio2photocatalystcoatings AT lianghao inactivationofsarscov2andphotocatalyticdegradationbytio2photocatalystcoatings AT hiroyukiyoshida inactivationofsarscov2andphotocatalyticdegradationbytio2photocatalystcoatings AT shoheinakada inactivationofsarscov2andphotocatalyticdegradationbytio2photocatalystcoatings AT taiseitakizawa inactivationofsarscov2andphotocatalyticdegradationbytio2photocatalystcoatings AT takaomiitoi inactivationofsarscov2andphotocatalyticdegradationbytio2photocatalystcoatings |