气候变化领域集成服务门户(CCPortal): CO2, water, and sunlight to hydrocarbon fuels: A sustained sunlight to fuel (Joule-to-Joule) photoconversion efficiency of 1%

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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	17545692
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.
英文关键词	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
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/189835
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 & 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 & Environmental Science 12.9(2019).