{"id":431496,"date":"2022-04-14T12:00:01","date_gmt":"2022-04-14T09:00:01","guid":{"rendered":"https:\/\/en.buradabiliyorum.com\/scientists-develop-indoor-active-photocatalyst-for-antiviral-coating-against-various-covid-variants\/"},"modified":"2022-04-14T12:00:01","modified_gmt":"2022-04-14T09:00:01","slug":"scientists-develop-indoor-active-photocatalyst-for-antiviral-coating-against-various-covid-variants","status":"publish","type":"post","link":"https:\/\/buradabiliyorum.com\/en\/scientists-develop-indoor-active-photocatalyst-for-antiviral-coating-against-various-covid-variants\/","title":{"rendered":"#Scientists develop indoor-active photocatalyst for antiviral coating against various COVID variants"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_89 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<label for=\"ez-toc-cssicon-toggle-item-6aefb6410e7a9\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #dd3333;color:#dd3333\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #dd3333;color:#dd3333\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-6aefb6410e7a9\" checked aria-label=\"Toggle\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/buradabiliyorum.com\/en\/scientists-develop-indoor-active-photocatalyst-for-antiviral-coating-against-various-covid-variants\/#%E2%80%9CScientists_develop_indoor-active_photocatalyst_for_antiviral_coating_against_various_COVID_variants%E2%80%9D\" >&#8220;Scientists develop indoor-active photocatalyst for antiviral coating against various COVID variants&#8221;<\/a><\/li><\/ul><\/nav><\/div>\n<h1><span class=\"ez-toc-section\" id=\"%E2%80%9CScientists_develop_indoor-active_photocatalyst_for_antiviral_coating_against_various_COVID_variants%E2%80%9D\"><\/span>&#8220;Scientists develop indoor-active photocatalyst for antiviral coating against various COVID variants&#8221;<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<div>\n<div class=\"article-gallery lightGallery\">\n<div data-thumb=\"https:\/\/scx1.b-cdn.net\/csz\/news\/tmb\/2022\/scientists-develop-ind.jpg\" data-src=\"https:\/\/scx2.b-cdn.net\/gfx\/news\/hires\/2022\/scientists-develop-ind.jpg\" data-sub-html=\"The TiO2\/CuxO coating inactivates viruses even under dark condition. Its antiviral activity is further enhanced by visible light irradiation. Credit: Ryuichi Nakano from Nara Medical University\">\n<figure class=\"article-img\">\n            <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/scx1.b-cdn.net\/csz\/news\/800a\/2022\/scientists-develop-ind.jpg\" alt=\"Scientists develop indoor-active photocatalyst for antiviral coating against various variant types of novel coronavirus SARS-CoV\" title=\"The TiO2\/CuxO coating inactivates viruses even under dark condition. Its antiviral activity is further enhanced by visible light irradiation. Credit: Ryuichi Nakano from Nara Medical University\" width=\"800\" height=\"396\"\/><figcaption class=\"text-darken text-low-up text-truncate-js text-truncate mt-3\">\n                The TiO2\/CuxO coating inactivates viruses even under dark condition. Its antiviral activity is further enhanced by visible light irradiation. Credit: Ryuichi Nakano from Nara Medical University<br \/>\n            <\/figcaption><\/figure>\n<\/p><\/div>\n<\/div>\n<p>A photocatalyst made using a combination of titanium dioxide (TiO<sub>2<\/sub>) and copper oxide (Cu<sub>x<\/sub>O) nanoclusters inactivates various variant types of novel coronavirus SARS-CoV-2. In a recent breakthrough, scientists in Nara Medical University, Kanagawa Institute of Industrial <a href=\"https:\/\/buradabiliyorum.com\/en\/category\/sciencee\/\" data-internallinksmanager029f6b8e52c=\"5\" title=\"Science\" target=\"_blank\" rel=\"noopener\">Science<\/a> and <a href=\"https:\/\/buradabiliyorum.com\/en\/category\/technology\/\" data-internallinksmanager029f6b8e52c=\"4\" title=\"Technology\" target=\"_blank\" rel=\"noopener\">Technology<\/a>, and Tokyo Institute of Technology have developed this antiviral photocatalyst, which has been proven to be effective under both darkness and indoor light.<\/p>\n<section class=\"article-banner first-banner ads-336x280\">\n         <!-- \/4988204\/Phys_Story_InText_Box --><\/p>\n<\/section>\n<p>The novel coronavirus (SARS-CoV-2), responsible for the ongoing COVID-19 pandemic, has affected millions of people worldwide. The main transmission pathway of the virus is through droplets released by infected people into the air. Additionally, these droplets exist on various surfaces as well. Viral infections mainly occur in indoor environments where many people gather. Antiviral chemicals, such as alcohol and hydrogen peroxide, are often used to decontaminate regularly touched surfaces. These chemicals essentially render the virus inactive by breaking down its proteins. However, these chemicals are volatile in nature, and therefore evaporate away. As a result, the disinfection process has to be carried out regularly.<\/p>\n<p>Now in a study published in <i>Scientific Reports<\/i>, a research team of Nara Medical University, Kanagawa Institute of Industrial Science and Technology, and Tokyo Institute of Technology has developed a solid-state photocatalyst as an alternative defense against the virus. Unlike chemical disinfectants, solid-state coatings remain for a long time, and since the viral outbreak, have been the subject of intensive research around the world. Solid-state antiviral coatings have the advantage of being non-toxic, abundant, and chemically and thermally stable.<\/p>\n<div class=\"article-gallery lightGallery\">\n<div data-thumb=\"https:\/\/scx1.b-cdn.net\/csz\/news\/tmb\/2022\/scientists-develop-ind-1.jpg\" data-src=\"https:\/\/scx2.b-cdn.net\/gfx\/news\/2022\/scientists-develop-ind-1.jpg\" data-sub-html=\"Small CuxO nanoclasters are grafted on TiO2 particles. Credit: Masahiro Miyauchi from Tokyo Institute of Technology\">\n<figure class=\"article-img text-center\">\n            <img decoding=\"async\" src=\"https:\/\/scx1.b-cdn.net\/csz\/news\/800a\/2022\/scientists-develop-ind-1.jpg\" alt=\"Scientists develop indoor-active photocatalyst for antiviral coating against various variant types of novel coronavirus SARS-CoV\" title=\"Small CuxO nanoclasters are grafted on TiO2 particles. Credit: Masahiro Miyauchi from Tokyo Institute of Technology\"\/><figcaption class=\"text-left text-darken text-truncate text-low-up mt-3\">\n                Small CuxO nanoclasters are grafted on TiO2 particles. Credit: Masahiro Miyauchi from Tokyo Institute of Technology<br \/>\n            <\/figcaption><\/figure>\n<\/p><\/div>\n<\/div>\n<p>Many of these solid-state coatings use TiO<sub>2<\/sub> photocatalysts, that when exposed to ultraviolet (UV) light, cause oxidation reaction that can destroy organic matter like the spike proteins found on the surfaces of coronaviruses. However, these coatings are activated only when exposed to UV light, which is not present in typical indoor environments. In most indoor environments, lighting is usually turned off at night; thus antiviral material that functions under dark conditions is desired.<\/p>\n<p>To get the coating to work under visible light as well dark conditions, the team developed a composite consisting of TiO<sub>2<\/sub> and Cu<sub>x<\/sub>O nanoclusters. Cu<sub>x<\/sub>O nanoclusters are composed of a mixed valence number oxide, in which Cu(I) and Cu(II) species are present. The Cu(II) species in Cu<sub>x<\/sub>O contributes to the visible-light-driven photocatalysis reaction, whereas the Cu(I) species plays a crucial role in denaturing virus proteins, thereby causing their inactivation under dark conditions.<\/p>\n<p>By coating the Cu<sub>x<\/sub>O\/TiO<sub>2<\/sub> powder on a glass, the team showed that it could inactivate even the highly virulent Delta variant of SARS-CoV-2. The team has also confirmed the inactivation of Alpha, Beta, and Gamma variants by Cu<sub>x<\/sub>O\/TiO<sub>2<\/sub> in addition to the wild type strain.<\/p>\n<div class=\"article-gallery lightGallery\">\n<div data-thumb=\"https:\/\/scx1.b-cdn.net\/csz\/news\/tmb\/2022\/scientists-develop-ind-2.jpg\" data-src=\"https:\/\/scx2.b-cdn.net\/gfx\/news\/hires\/2022\/scientists-develop-ind-2.jpg\" data-sub-html=\"The TiO2\/CuxO coating inactivates the virus by fragmenting and oxidizing spike proteins and RNAs of SARS-CoV-2. Credit: Ryuichi Nakano from Nara Medical University\">\n<figure class=\"article-img text-center\">\n            <img decoding=\"async\" src=\"https:\/\/scx1.b-cdn.net\/csz\/news\/800a\/2022\/scientists-develop-ind-2.jpg\" alt=\"Scientists develop indoor-active photocatalyst for antiviral coating against various variant types of novel coronavirus SARS-CoV\" title=\"The TiO2\/CuxO coating inactivates the virus by fragmenting and oxidizing spike proteins and RNAs of SARS-CoV-2. Credit: Ryuichi Nakano from Nara Medical University\"\/><figcaption class=\"text-left text-darken text-truncate text-low-up mt-3\">\n                The TiO2\/CuxO coating inactivates the virus by fragmenting and oxidizing spike proteins and RNAs of SARS-CoV-2. Credit: Ryuichi Nakano from Nara Medical University<br \/>\n            <\/figcaption><\/figure>\n<\/p><\/div>\n<\/div>\n<p>The team carefully investigated the antiviral mechanism using sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE), ELISA assay, and RT-qPCR analysis. These analyses strongly suggest that the Cu(I) species in Cu<sub>x<\/sub>O denaturalizes spike proteins and also causes RNA fragmentation of SARS-CoV-2, even under dark conditions. Furthermore, white light irradiation causes the photocatalytic oxidation of the organic molecules of SARS-CoV-2. Based on this antiviral mechanism, the present antiviral material is not limited to a specific variant of the virus and will be effective to inactivate various types of a potential mutant strain.<\/p>\n<p>White light illumination in the present study is usually used as an indoor light <a href=\"https:\/\/buradabiliyorum.com\/en\/category\/download-scripts-themes-apps\/\" data-internallinksmanager029f6b8e52c=\"9\" title=\"Download Scripts &amp; Themes &amp; Apps\" target=\"_blank\" rel=\"noopener\">app<\/a>aratus. This can make the Cu<sub>x<\/sub>O\/TiO<sub>2<\/sub> photocatalyst very effective in reducing the risk of COVID-19 infection in indoor environments, which are usually subjected to both light and darkness periodically.<\/p>\n<hr\/>\n<div class=\"article-main__explore my-4 d-print-none\">\n<p>                                            Coating surfaces with a thin layer of copper has the potential to kill the virus causing COVID-19 faster\n                                        <\/p><\/div>\n<hr class=\"mb-4\"\/>\n<div class=\"article-main__more p-4\">\n                                                                                                <strong>More information:<\/strong><br \/>\n                                                Inactivation of Various Variant Types of SARS-CoV-2 by Indoor-light-sensitive TiO2-based Photocatalyst, <i>Scientific Reports<\/i> (2022). <a rel=\"nofollow noopener\" target=\"_blank\" data-doi=\"1\" href=\"https:\/\/dx.doi.org\/10.1038\/s41598-022-09402-7\">DOI: 10.1038\/s41598-022-09402-7<\/a><\/p><\/div>\n<div class=\"d-inline-block text-medium my-4\">\n                                                Provided by<br \/>\n                                                                                                    Tokyo Institute of Technology<br \/>\n                                                                                                        <a rel=\"nofollow noopener\" target=\"_blank\" class=\"icon_open\" href=\"http:\/\/www.titech.ac.jp\/\"><br \/>\n                                                        <svg>\n                                                            <use href=\"https:\/\/phys.b-cdn.net\/tmpl\/v6\/img\/svg\/sprite.svg#icon_open\" x=\"0\" y=\"0\"\/>\n                                                        <\/svg><br \/>\n                                                    <\/a><\/p><\/div>\n<p>                                        <!-- print only --><\/p>\n<div class=\"d-none d-print-block\">\n<p>                                                 <strong>Citation<\/strong>:<br \/>\n                                                 Scientists develop indoor-active photocatalyst for antiviral coating against various COVID variants (2022, April 14)<br \/>\n                                                 retrieved 14 April 2022<br \/>\n                                                 from https:\/\/phys.org\/<a href=\"https:\/\/buradabiliyorum.com\/en\/category\/news\/\" data-internallinksmanager029f6b8e52c=\"2\" title=\"News\" target=\"_blank\" rel=\"noopener\">news<\/a>\/2022-04-scientists-indoor-active-photocatalyst-antiviral-coating.html<\/p>\n<p>                                            This document is subject to copyright. 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Its antiviral activity is further enhanced by visible light irradiation. Credit: Ryuichi Nakano from Nara Medical University A photocatalyst made using a combination of titanium dioxide (TiO2) and copper oxide (CuxO) nanoclusters inactivates various variant&#8230;<\/p>\n","protected":false},"author":1,"featured_media":431497,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"https:\/\/scx2.b-cdn.net\/gfx\/news\/hires\/2022\/scientists-develop-ind.jpg","fifu_image_alt":"","footnotes":""},"categories":[16],"tags":[],"class_list":["post-431496","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sciencee"],"_links":{"self":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/431496","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/comments?post=431496"}],"version-history":[{"count":0,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/posts\/431496\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media\/431497"}],"wp:attachment":[{"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/media?parent=431496"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/categories?post=431496"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/buradabiliyorum.com\/en\/wp-json\/wp\/v2\/tags?post=431496"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}