{"id":100,"date":"2014-07-11T12:45:54","date_gmt":"2014-07-11T03:15:54","guid":{"rendered":"http:\/\/blogs.flinders.edu.au\/nano-news\/?p=100"},"modified":"2014-07-11T12:45:54","modified_gmt":"2014-07-11T03:15:54","slug":"solar-fuels-hydrocarbon-production-from-water-co2-and-sunlight","status":"publish","type":"post","link":"https:\/\/blogs.flinders.edu.au\/nano-news\/2014\/07\/11\/solar-fuels-hydrocarbon-production-from-water-co2-and-sunlight\/","title":{"rendered":"Solar Fuels: Hydrocarbon production from water, CO2 and sunlight"},"content":{"rendered":"<p>Flinders NanoCentre, the Ian Wark Institute and the University of Adelaide have joined forces in a South Australian collaboration to explore catalyst-co-catalyst systems in the hopes of finding efficient routes to reduce CO<sub>2<\/sub> and oxidise water simultaneously in the gas phase to form methanol, methane or ethanol.<\/p>\n<p>With the combination of Electron Spectroscopy (XPS\/UPS\/MIES), UV-Vis Absorption Spectroscopy, Transient Absorption Spectroscopy, Photoluminescence Spectroscopy and Electrochemistry we will be able to investigate a catalyst and co-catalyst system and relate electronic structure to the reactivity of catalyst systems in the reduction of CO<sub>2<\/sub> and oxidation of H<sub>2<\/sub>O under solar illumination.<\/p>\n<p>Traditionally the reduction of water is thought to take place on the surface of the noble metal co-catalyst, where sunlight excites an electron-hole pair in the photocatalyst and the electron from the support catalyst transfers to the co-catalyst to be utilised in the reduction of protons to form molecular hydrogen.<\/p>\n<p>Recently a new model of water splitting was proposed by Bong Joo et al<sup>1<\/sup> from the University of California.<\/p>\n<p>This model, supported by fluorescence data, points to the photocatalyst performing both reduction of protons and oxidation of water. Whilst the co-catalyst serves to form dihydrogen from atomic hydrogen, countering the recombination of hydrogen and oxygen to form water.<\/p>\n<p><a href=\"https:\/\/blogs.flinders.edu.au\/nano-news\/files\/2014\/07\/reactionsnewer.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-105\" src=\"https:\/\/blogs.flinders.edu.au\/nano-news\/files\/2014\/07\/reactionsnewer.png\" alt=\"reactionsnewer\" width=\"1073\" height=\"434\" \/><\/a><\/p>\n<p>The formation of hydrocarbons from water and CO<sub>2<\/sub> could perhaps begin by the formation of hydrogen molecules on the co-catalyst surface followed by a Sabatier reaction on the same co-catalyst. Rather than the multi-proton, multi-electron CO<sub>2<\/sub> reduction model currently proposed in literature.<\/p>\n<p>If this is true, the emergence of a new exploratory method for catalyst systems in a decades old topic could present new avenues to efficient conversion of CO<sub>2<\/sub> and H<sub>2<\/sub>O into fuels.<\/p>\n<p>Posted by Dr Rantej Kler, Postdoc with Assoc. Prof. Gunther Andersson in collaboration with Prof. Thomas Nann (UniSA) and Prof. Greg Metha (Adelaide).<\/p>\n<p>&nbsp;<\/p>\n<p>1.\u00a0Joo, Ji Bong, Robert Dillon, Ilkeun Lee, Yadong Yin, Christopher J. Bardeen, and Francisco Zaera. &#8220;Promotion of atomic hydrogen recombination as an alternative to electron trapping for the role of metals in the photocatalytic production of H<sub>2<\/sub>.&#8221;\u00a0<i>Proceedings of the National Academy of Sciences<\/i>\u00a0111, no. 22 (2014): 7942-7947. <a id=\"lnk909573\" href=\"http:\/\/www.pnas.org\/content\/111\/22\/7942.short\" target=\"_blank\">http:\/\/www.pnas.org\/content\/111\/22\/7942.short<\/a><\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Flinders NanoCentre, the Ian Wark Institute and the University of Adelaide have joined forces in a South Australian collaboration to explore catalyst-co-catalyst systems in the hopes [&hellip;]<\/p>\n","protected":false},"author":36,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2,3],"tags":[],"class_list":["post-100","post","type-post","status-publish","format-standard","hentry","category-energy","category-environment"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.6 - 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