In-situ construction of photoanode with Fe2O3/Fe3O4 heterojunction nanotube array to facilitate charge separation for efficient water splitting

Hematite (α-Fe2O3), as a promising material in photoelectrochemical water splitting, has been given much attention to enhance its performance through a series of modifications. In this work, anodized Fe2O3 nanotubes were annealed in air and then in argon atmosphere. The samples annealed in argon und...

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