文章基本信息

标题：Ambient sunlight-driven photothermal methanol dehydrogenation for syngas production with 32.9 % solar-to-hydrogen conversion efficiency
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作者：Xianhua Bai ; Dachao Yuan ; Yaguang Li 等
期刊名称：iScience
印刷版ISSN：2589-0042
出版年度：2021
卷号：24
期号：2
页码：1-44
DOI：10.1016/j.isci.2021.102056
语种：English
出版社：Elsevier
摘要：SummaryMethanol dehydrogenation is an efficient way to produce syngas with high quality. The current efficiency of sunlight-driven methanol dehydrogenation is poor, which is limited by the lack of excellent catalysts and effective methods to convert sunlight into chemicals. Here, we show that atomically substitutional Pt-doped in CeO2nanosheets (Pts-CeO2) exhibit excellent methanol dehydrogenation activity with 500-hr level catalytic stability, 11 times higher than that of Pt nanoparticles/CeO2. Further, we introduce a photothermal conversion device to heat Pts-CeO2up to 299°C under 1 sun irradiation owning to efficient full sunlight absorption and low heat dissipation, thus achieving an extraordinarily high methanol dehydrogenation performance with a 481.1 mmol g−1h−1of H2production rate and a high solar-to-hydrogen (STH) efficiency of 32.9%. Our method represents another progress for ambient sunlight-driven stable and active methanol dehydrogenation technology.Graphical abstractDisplay OmittedHighlights•Atomically substitutional Pt-doped CeO2is active and robust for CH3OH dehydrogenation•The photothermal conversion device can heat Pts-CeO2to 299°C under 1 sun irradiation•The joint system achieves a one sun irradiated H2production rate of 481.1 mmol g−1h−1•This system delivers a high solar-to-H2efficiency of 32.9% under one sun irradiationCatalysis; Chemical Reaction Engineering; Chemistry