催化作用
碳氢化合物
甲烷
钼
烷烃
碳纤维
氧化还原
碳化物
选择性
二氧化碳
材料科学
无机化学
化学工程
二氧化碳电化学还原
化学
一氧化碳
有机化学
复合材料
工程类
复合数
作者
Fan Yang,Jiayun Pei,Haiyan Zhao
标识
DOI:10.1021/acs.jpcc.3c01514
摘要
The catalytic reduction of carbon dioxide (CO2) to produce methane (CH4) as a hydrocarbon fuel has attracted extensive attention for renewable energy. In this study, we investigate ultrathin carbon-deficient molybdenum carbide (MoC0.66) as a catalyst for CO2 capture and conversion. Our findings indicate that MoC0.66 possesses remarkable catalytic activity for CO2 hydrogenation to CH4. Interestingly, unlike conventional catalysts, the limiting step of the MoC0.66 catalyst is determined by the release of *OH species during the CO2 reduction reaction (CO2RR). Increasing the temperature can improve the release of H2O and CH4 as well as the selectivity of the CO2RR. Moreover, the increase of temperature promotes the CO2RR on MoC0.66 by increasing the reaction rate, as evidenced by both simulation and experimental results. These results provide a way for the understanding of insight mechanisms for the CO2RR to energy-rich fuels at the atomic level and guide experimental applications of carbon-neutral reactions.
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