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DOI | 10.1039/c9ee00734b |
CO2; water; and sunlight to hydrocarbon fuels: A sustained sunlight to fuel (Joule-to-Joule) photoconversion efficiency of 1% | |
Sorcar S.; Hwang Y.; Lee J.; Kim H.; Grimes K.M.; Grimes C.A.; Jung J.-W.; Cho C.-H.; Majima T.; Hoffmann M.R.; In S.-I. | |
发表日期 | 2019 |
ISSN | 1754-5692 |
起始页码 | 2685 |
结束页码 | 2696 |
卷号 | 12期号:9 |
英文摘要 | If we wish to sustain our terrestrial ecosphere as we know it, then reducing the concentration of atmospheric CO2 is of critical importance. An ideal pathway for achieving this would be the use of sunlight to recycle CO2, in combination with water, into hydrocarbon fuels compatible with our current energy infrastructure. However, while the concept is intriguing such a technology has not been viable due to the vanishingly small CO2-to-fuel photoconversion efficiencies achieved. Herein we report a photocatalyst, reduced blue-titania sensitized with bimetallic Cu-Pt nanoparticles that generates a substantial amount of both methane and ethane by CO2 photoreduction under artificial sunlight (AM1.5): over a 6 h period 3.0 mmol g-1 methane and 0.15 mmol g-1 ethane are obtained (on an area normalized basis 0.244 mol m-2 methane and 0.012 mol m-2 ethane), while no H2 nor CO is detected. This activity (6 h) translates into a sustained Joule (sunlight) to Joule (fuel) photoconversion efficiency of 1%, with an apparent quantum efficiency of φ = 86%. The time-dependent photoconversion efficiency over 0.5 h intervals yields a maximum value of 3.3% (φ = 92%). Isotopic tracer experiments confirm the hydrocarbon products originate from CO2 and water. © 2019 The Royal Society of Chemistry. |
语种 | 英语 |
scopus关键词 | Binary alloys; Copper alloys; Ethane; Fuels; Methane; Platinum alloys; Titanium dioxide; Current energy; Hydrocarbon fuel; Hydrocarbon product; Isotopic tracer; Photo-reduction; Photoconversion efficiency; Pt nanoparticles; Time dependent; Carbon dioxide; carbon dioxide; catalyst; concentration (composition); copper; energy efficiency; ethane; infrastructure; methane; nanoparticle; platinum; reduction; water |
来源期刊 | Energy and Environmental Science |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/162775 |
作者单位 | Department of Energy Science and Engineering, DGIST, 333 Techno Jungang-daero Hyeonpung-myeon Dalseong-gun, Daegu, 42988, South Korea; Department of Emerging Materials Science, DGIST, 333 Techno Jungang-daero Hyeonpung-myeon Dalseong-gun, Daegu, 42988, South Korea; Institute of Scientific and Industrial Research (SANKEN), Osaka University, Mihogaoka 8-1, Ibaraki Osaka, 567-0047, Japan; Linde + Robinson Laboratories, California Institute of Technology, Pasadena, CA 91125, United States |
推荐引用方式 GB/T 7714 | Sorcar S.,Hwang Y.,Lee J.,et al. CO2; water; and sunlight to hydrocarbon fuels: A sustained sunlight to fuel (Joule-to-Joule) photoconversion efficiency of 1%[J],2019,12(9). |
APA | Sorcar S..,Hwang Y..,Lee J..,Kim H..,Grimes K.M..,...&In S.-I..(2019).CO2; water; and sunlight to hydrocarbon fuels: A sustained sunlight to fuel (Joule-to-Joule) photoconversion efficiency of 1%.Energy and Environmental Science,12(9). |
MLA | Sorcar S.,et al."CO2; water; and sunlight to hydrocarbon fuels: A sustained sunlight to fuel (Joule-to-Joule) photoconversion efficiency of 1%".Energy and Environmental Science 12.9(2019). |
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