Oxygen vacancies have been widely concerned with the facilitation effects of CO activation for CO methanation. However, little attention has been paid to the generation of active intermediate species induced by enriched oxygen vacancies. Herein, we discovered that CeNiO catalyst enriched oxygen vacancies can efficiently activate CO and realize high activity for photothermal CO methanation. diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) proved that oxygen vacancies are beneficial to the formation of reactive intermediate species of polydentate carbonate over CeNiO, which is crucial for efficient CO methanation. These results revealed mechanistic insights into how effective CO activation induced by oxygen vacancies can be manipulated by adjusting the adsorption intermediate species.

中文翻译：

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有效CO2活化富氧空位进行光热CO2甲烷化


氧空位与CO活化对CO甲烷化的促进作用受到广泛关注。然而，人们很少关注富氧空位诱导的活性中间体的产生。在此，我们发现CeNiO催化剂富集氧空位可以有效地活化CO并实现光热CO甲烷化的高活性。漫反射红外傅里叶变换光谱（DRIFTS）证明，氧空位有利于在CeNiO上形成多齿碳酸盐活性中间体，这对于有效的CO甲烷化至关重要。这些结果揭示了如何通过调整吸附中间体物种来控制由氧空位诱导的有效 CO 活化的机制。