Highly efficient and stable photothermal catalytic CO2 hydrogenation to methanol over Ru/In2O3 under atmospheric pressure
Highly efficient and stable photothermal catalytic CO2 hydrogenation to methanol over Ru/In2O3 under atmospheric pressure
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DOI：
10.1016/j.apcatb.2023.122471
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发表时间：
2023-02
期刊：
影响因子：
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通讯作者：
B. Deng;Hui Song;Qi Wang;Jianan Hong;Shuang Song;Yanwei Zhang;Kang Peng;Hongwei Zhang;T. Kako;Jinhua Ye
中科院分区：
文献类型：
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作者：
B. Deng;Hui Song;Qi Wang;Jianan Hong;Shuang Song;Yanwei Zhang;Kang Peng;Hongwei Zhang;T. Kako;Jinhua Ye
光热催化h2o2加氢制CH3OH是一种很有前途的将太阳能转化为化学能的方法。然而，在温和条件下，co2转化效率有限，CH3OH选择性较差，仍然阻碍了该反应的发展。本文报道了一种Ru/ in2o3催化剂，用于常压下co2加氢高效稳定的光热生产CH3OH。Ru/ in2o3催化剂的CH3OH产量为280.4 μmol g-1h-1，是相同条件下纯in2o3催化剂的约50倍，并且超过了迄今为止报道的基于in2o3的光热催化剂。详细的表征表明，光热加热效应和热载子诱导的反应物对Ru的活化以及Ru与in2o3的相互作用增强了co2和H2的活化。此外，Ru调节了in2o3的电子结构，促进了氧空位的生成，有利于氢化过程生成CH3OH。本研究为合理设计温和条件下co2加氢太阳能生产CH3OH的高效催化剂铺平了道路。
Photothermal catalytic CO2hydrogenation to CH3OH with renewable H2is a promising method to convert solar energy into chemical energy. However, it is still impeded by limited CO2conversion efficiency and poor CH3OH selectivity under mild conditions. Herein, we report a Ru/In2O3catalyst for efficient and stable photothermal CH3OH production from CO2hydrogenation under atmospheric pressure. The Ru/In2O3catalyst delivers a remarkable solar CH3OH production of 280.4 μmol g-1h-1, which is ∼50 times higher than that of pure In2O3under the same conditions and surpasses by far reported In2O3-based photothermal catalysts. Detailed characterizations demonstrate that the synergy of photothermal heating effect and hot-carriers-induced activation of reactants on Ru together with the interaction between Ru and In2O3enhances the activation of CO2and H2. Moreover, Ru modulates the electronic structure of In2O3and promotes the generation of oxygen vacancies, which is favorable for the hydrogenation process to form CH3OH. This work paves a way for the rational design of efficient catalysts for solar CH3OH production from CO2hydrogenation under mild conditions.