{"id":358756,"date":"2026-03-24T15:18:24","date_gmt":"2026-03-24T09:48:24","guid":{"rendered":"https:\/\/forumias.com\/blog\/?p=358756"},"modified":"2026-03-24T15:18:24","modified_gmt":"2026-03-24T09:48:24","slug":"smog-eating-photocatalytic-coatings","status":"publish","type":"post","link":"https:\/\/forumias.com\/blog\/smog-eating-photocatalytic-coatings\/","title":{"rendered":"Smog-Eating Photocatalytic Coatings"},"content":{"rendered":"<p><strong>News: <\/strong>Delhi government and IIT Madras began a six-month study on \u201csmog-eating\u201d photocatalytic coatings to test reduction of NO\u2082 and volatile organic compounds (VOC) pollutants.<\/p>\n<h2>About Smog-Eating Photocatalytic Coatings<\/h2>\n<figure id=\"attachment_358758\" aria-describedby=\"caption-attachment-358758\" style=\"width: 394px\" class=\"wp-caption aligncenter\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" class=\" wp-image-358758\" src=\"https:\/\/i0.wp.com\/forumias.com\/blog\/wp-content\/uploads\/2026\/03\/Source-ToI-1.jpg?resize=394%2C422&#038;ssl=1\" alt=\"Smog-Eating Photocatalytic Coatings\" width=\"394\" height=\"422\" srcset=\"https:\/\/i0.wp.com\/forumias.com\/blog\/wp-content\/uploads\/2026\/03\/Source-ToI-1.jpg?resize=280%2C300&amp;ssl=1 280w, https:\/\/i0.wp.com\/forumias.com\/blog\/wp-content\/uploads\/2026\/03\/Source-ToI-1.jpg?resize=768%2C823&amp;ssl=1 768w, https:\/\/i0.wp.com\/forumias.com\/blog\/wp-content\/uploads\/2026\/03\/Source-ToI-1.jpg?w=823&amp;ssl=1 823w\" sizes=\"auto, (max-width: 394px) 100vw, 394px\" \/><figcaption id=\"caption-attachment-358758\" class=\"wp-caption-text\">Source &#8211; ToI<\/figcaption><\/figure>\n<ul>\n<li>It is a <strong>coating using titanium dioxide<\/strong> that <strong>neutralizes harmful gases<\/strong> like <strong>nitrogen dioxide<\/strong> <strong>(NO2)<\/strong> and <strong>volatile organic compounds (VOCs)<\/strong>.<\/li>\n<li><strong>Mechanism<\/strong>\n<ul>\n<li><strong>Photocatalytic<\/strong> activity <strong>uses light energy to break down harmful substances and organic waste<\/strong> into <strong>less toxic or harmless matter<\/strong>.<\/li>\n<li>When <strong>exposed to sunlight<\/strong>, <strong>titanium dioxide<\/strong> acts as a <strong>catalyst<\/strong> and generates <strong>surface electrons<\/strong>.<\/li>\n<li>These <strong>electrons<\/strong> <strong>react with<\/strong> <strong>pollutants<\/strong> such as nitrogen dioxide and volatile organic compounds and <strong>dismantle<\/strong> them.<\/li>\n<li>This process helps in <strong>making air and water cleaner<\/strong>.<\/li>\n<\/ul>\n<\/li>\n<li><strong>Technology used:<\/strong> <strong>Titanium dioxide<\/strong> is used as it is <strong>low-cost, chemically stable<\/strong>\u00a0and compatible with construction materials.<\/li>\n<li><strong>Targeted pollutants:<\/strong> It targets <strong>nitrogen dioxide and volatile organic compounds<\/strong> and prevents <strong>secondary particulate matter<\/strong> and <strong>ground-level ozone formation.<\/strong><\/li>\n<li><strong>Applications:<\/strong> It is applied on <strong>roads, pavements, buildings, and tiles<\/strong>, where it works as a <strong>passive air-cleaning system<\/strong>.<\/li>\n<li><strong>Limitation:<\/strong> Its <strong>efficiency reduces due to low sunlight<\/strong>, <strong>dust<\/strong> accumulation, and <strong>wind<\/strong> conditions, and it may cause<strong> nitrate runoff<\/strong> leading to <strong>eutrophication<\/strong> in water bodies like Yamuna.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>News: Delhi government and IIT Madras began a six-month study on \u201csmog-eating\u201d photocatalytic coatings to test reduction of NO\u2082 and volatile organic compounds (VOC) pollutants. About Smog-Eating Photocatalytic Coatings It is a coating using titanium dioxide that neutralizes harmful gases like nitrogen dioxide (NO2) and volatile organic compounds (VOCs). Mechanism Photocatalytic activity uses light energy&hellip; <a class=\"more-link\" href=\"https:\/\/forumias.com\/blog\/smog-eating-photocatalytic-coatings\/\">Continue reading <span class=\"screen-reader-text\">Smog-Eating Photocatalytic Coatings<\/span><\/a><\/p>\n","protected":false},"author":10393,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"footnotes":""},"categories":[1566,1738,12039],"tags":[11872],"class_list":["post-358756","post","type-post","status-publish","format-standard","hentry","category-daily-factly-articles","category-science-and-technology-daily-factly-articles","category-knolls","tag-9pm-daily-factly","entry"],"jetpack_featured_media_url":"","views":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/posts\/358756","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/users\/10393"}],"replies":[{"embeddable":true,"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/comments?post=358756"}],"version-history":[{"count":0,"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/posts\/358756\/revisions"}],"wp:attachment":[{"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/media?parent=358756"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/categories?post=358756"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/forumias.com\/blog\/wp-json\/wp\/v2\/tags?post=358756"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}