Femtosecond transient absorption spectroscopy of maghemite nanoparticles loaded with gold nanoparticles

Masahiro Okazaki, Yusuke Ishii & Akihiro Furube
Photocatalytic water splitting is very useful for solar energy conversion. Iron oxides are attracting a lot of interests due to absorption in the visible region. However, iron oxides have poor conductivity. As one of solutions, the photocatalytic performance may be enhanced with loaded gold nanoparticles (Au-NP) by the characteristic optical absorption and the charge trapping nature. In this study, hybrid material of maghemite (γ-Fe2O3) and Au-NP (denoted as Au-Fe2O3) was prepared and the photo-generated carrier...
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