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DOI	10.1039/c8ee02347f
	Enhanced photothermal reduction of gaseous CO 2 over silicon photonic crystal supported ruthenium at ambient temperature
	O'Brien P.G.; Ghuman K.K.; Jelle A.A.; Sandhel A.; Wood T.E.; Loh J.Y.Y.; Jia J.; Perovic D.; Singh C.V.; Kherani N.P.; Mims C.A.; Ozin G.A.
发表日期	2018
ISSN	17545692
起始页码	3443
结束页码	3451
卷号	11 期号:12
英文摘要	Solar-driven CO 2 hydrogenation can provide a renewable source of fuels and reduce greenhouse gas emissions if operated at industrial scales. Herein we investigate the photomethanation (light-driven Sabatier reaction) rates over Ru films sputtered onto silica opal (Ru/SiO 2 ) and inverted silicon opal photonic crystal (Ru/i-Si-o) supports at ambient temperature under solar-simulated radiation as a function of incident light intensity. Photomethanation rates over both the Ru/SiO 2 and Ru/i-Si-o catalysts increase significantly with increasing light intensity, and rates as large as 2.8 mmol g -1 h -1 are achieved over the Ru/i-Si-o catalyst. Furthermore, the quantum efficiency of the photomethanation reaction is almost three times larger when measured over the Ru/i-Si-o catalyst as compared to the Ru/SiO 2 catalyst. The large photomethanation rates over the Ru/i-Si-o catalyst are attributed to its exceptional light-harvesting properties. Moreover, we perform DFT analysis to investigate the potential role of photo-induced charges on the Ru surface. The results from the simulation indicate that charged Ru surfaces can destabilize adsorbed CO 2 molecules and adsorb and dissociate H 2 such that it can readily react with CO 2 , thereby accelerating the Sabatier reaction. © 2018 The Royal Society of Chemistry.
英文关键词	Carbon dioxide; Catalysts; Gas emissions; Greenhouse gases; Incident solar radiation; Industrial emissions; Photonic crystals; Photonic devices; Reaction rates; Reactor cores; Silica; Silicon photonics; Temperature; CO2 hydrogenation; Incident light intensity; Industrial scale; Light harvesting properties; Opal photonic crystals; Photo-induced charge; Renewable sources; Simulated radiation; Ruthenium; carbon dioxide; catalyst; chemical reaction; crystal; greenhouse gas; light intensity; photochemistry; reduction; ruthenium; silicon; simulation; solar radiation; temperature
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/190054
作者单位	Department of Mechanical Engineering, Lassonde School, Engineering York University, 4700 Keele Street, Toronto, ON M3J 1P3, Canada; International Institute for Carbon-Neutral Energy Research, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan; Department of Materials Science and Engineering, University of Toronto, 184 College Street, Toronto, ON M5S 3E4, Canada; Department of Chemistry, University of Toronto, 80 St. George St., Toronto, ON M5S 3H6, Canada; Department of Chemical Engineering and Applied Chemistry, University of Toronto, 200 College St., Toronto, ON M5S 3E5, Canada; Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, ON M5S 3G4, Canada
推荐引用方式 GB/T 7714	O'Brien P.G.,Ghuman K.K.,Jelle A.A.,et al. Enhanced photothermal reduction of gaseous CO 2 over silicon photonic crystal supported ruthenium at ambient temperature[J],2018,11(12).
APA	O'Brien P.G..,Ghuman K.K..,Jelle A.A..,Sandhel A..,Wood T.E..,...&Ozin G.A..(2018).Enhanced photothermal reduction of gaseous CO 2 over silicon photonic crystal supported ruthenium at ambient temperature.Energy & Environmental Science,11(12).
MLA	O'Brien P.G.,et al."Enhanced photothermal reduction of gaseous CO 2 over silicon photonic crystal supported ruthenium at ambient temperature".Energy & Environmental Science 11.12(2018).