Development of intensity modulated infrared spectroscopy for analysis of photocatalytic reactions

利用光催化剂分解太阳能水是一种很有前途的能量转换和储存技术。然而，即使在广泛使用的TiO 2光催化剂的情况下，也没有阐明高效光催化剂的设计概念。阐明结构、物理性质和光激发电子寿命之间的相关性将提供高效光催化剂的设计概念。在这项研究中，我们研究了决定的TiO2和WO3的光催化活性的决定性因素，使用时间分辨红外吸收光谱评估光激发电子寿命。

Solar water splitting using photocatalysts is a promising technology for energy conversion and storage. However, design concepts for highly efficient photocatalyst have not been clarified even in the case of a widely used TiO2 photocatalyst. Elucidating correlations between structure, physical properties, and photoexcited electron lifetime will provide the design concepts of highly efficient photocatalysts. In this study, we investigated the decisive factors deciding the photocatalytic activities of TiO2 and WO3 using time-resolved infrared absorption spectroscopy evaluating photoexcited electron lifetime.