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NiFe Nanoalloys Derived from Layered Double Hydroxides for Photothermal Synergistic Reforming of CH4 with CO_2

机译:NiFe Nanoalloys Derived from Layered Double Hydroxides for Photothermal Synergistic Reforming of CH4 with CO_2

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摘要

Dry reforming of methane (DRM) with carbon dioxide to produce syngas iscurrently attracting a lot of attention for converting greenhouse gases intovaluable chemicals. However, harsh reaction conditions in thermal catalysishinder practical applications. Herein, a series of alumina-supported Ni_xFe_ynanoalloys are synthesized from NiFeAl-layered double hydroxide precursors,with the obtained catalysts used for photothermal synergistic DRM. TheNi_3Fe_1 nanoalloy catalyst shows a syngas production rate of 0.96 mol g~(–1) h~(–1)under a 350 ℃ photothermal condition, which is about 1100 times higherthan that of the same catalyst at the same temperature in the dark. Methaneactivation as the rate-determining step in DRM is greatly enhanced by thelocalized surface plasmon resonance of the Ni_3Fe_1 nanoalloy in the ultravioletregion, thus accounting for the remarkably reduced reaction temperature.Meanwhile, the nanoalloy-based photothermal synergistic DRM exhibitssunlight-driven feasibility and 20 h of continuous operational stability.

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  • 来源
    《Advanced functional materials》 |2022年第31期|2204056.1-2204056.9|共9页
  • 作者单位

    Key Laboratory of Photochemical Conversion and OptoelectronicMaterialsTechnical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190, China.Center of Materials Science and Optoelectronics EngineeringUniversity of Chinese Academy of;

    Center of Materials Science and Optoelectronics EngineeringUniversity of Chinese Academy of SciencesBeijing 100049, China,CAS Key Laboratory of Nanophotonic Materials and DevicesCAS Key Laboratory of Standardization and Measurement forNanotechnologyCAS Ce;

    Key Laboratory of Photochemical Conversion and OptoelectronicMaterialsTechnical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190, China,Key Laboratory of Thermal Management and Energy Utilization ofAircraftMinistry of Industry aSchool of Chemical SciencesThe University of AucklandAuckland 1142, New Zealand;

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  • 原文格式 PDF
  • 正文语种 英语
  • 中图分类
  • 关键词

    CH_4 reforming; CO_2 reduction; layered double hydroxide; photothermal catalysis;

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