Oxygen vacancies in catalyst systems play a crucial role in manipulating pivotal redox properties that are strongly dependent on the composition of the material. Herein, for the first time, experimental evidence of a linear correlation between the extent of oxygen vacancy formation in the La0.6 Sr0.4 BO3 (B=Cr, Mn, Fe, Co, and Ni) perovskite series and H2 generation in two-step thermochemical water splitting is reported, with detailed materials characterization by means of thermogravimetric analysis, XRD, SEM, TEM, and energy-dispersive X-ray spectroscopy. Noteworthy O2 (718 μmol g-1 ) and H2 (514 μmol g-1 ) production was achieved by the La0.6 Sr0.4 CoO3 perovskite in the thermochemical water-splitting process conducted between 1300 and 900 °C.

中文翻译：

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通过在La0.6 Sr0.4BO3-δ（B = Cr，Mn，Fe，Co和Ni）钙钛矿中形成氧空位来增强热化学水分解。

催化剂体系中的氧空位在控制关键的氧化还原性能中起着至关重要的作用，而氧化还原性能主要取决于材料的组成。在这里，这是首次实验证明钙钛矿系列La0.6 Sr0.4 BO3（B = Cr，Mn，Fe，Co和Ni）中氧空位形成程度与H2生成之间线性相关报告了一步热化学水分解的过程，并通过热重分析，XRD，SEM，TEM和能量色散X射线光谱对材料进行了详细表征。在1300至900°C的热化学水分解过程中，通过La0.6 Sr0.4 CoO3钙钛矿获得了值得注意的O2（718μmolg-1）和H2（514μmolg-1）产量。