Constructing graphite-CeO2 interfaces to enhance the photothermal activity for solar-driven dry reforming of methane
收藏科学数据银行2025-02-26 更新2026-04-23 收录
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CeO2 based semiconductor are widely used in solar-driven photothermal catalytic dry reforming of methane (DRM) reaction, but still suffer from low activity and low light utilization efficiency. This study developed graphite-CeO2 interfaces to enhance solar-driven photothermal catalytic DRM. Compared with carbon nanotubes-modified CeO2 (CeO2-CNT), graphite-modified CeO2 (CeO2-GRA) constructed graphite-CeO2 interfaces with distortion in CeO2, leading to the formation abundant oxygen vacancies. These graphite-CeO2 interfaces with oxygen vacancies enhanced optical absorption and promoted the generation and separation of photogenerated carriers. The high endothermic capacity of graphite elevated the catalyst surface temperature from 592.1 ℃ to 691.3 ℃, boosting light-to-thermal conversion. The synergy between photogenerated carriers and localized heat enabled Ni/CeO2-GRA to achieve a CO production rate of 9985.6 mmol gcat.-1 h-1 (vs. 7192.4 for Ni/ CeO2) and a light-to-fuel efficiency of 21.8 % (vs. 13.8 % for Ni/ CeO2). This work provides insights for designing graphite-semiconductor interfaces to advance photothermal catalytic efficiency.
提供机构：
National Enterprise Technology Center, Inner Mongolia Erdos Electric Power and Metallurgy Group Co; National Enterprise Technology Center, Inner Mongolia Erdos Electric Power and Metallurgy Group Co.; Shanghai Advanced Research Institute
创建时间：
2025-02-21
