Band gap and Morphology Engineering of Hematite Nanoflakes from an Ex Situ Sn Doping for Enhanced Photoelectrochemical Water Splitting.

ABSTRACT: In this article, we report a simple ex situ Sn-doping method on hematite nanoflakes (coded as MSnO₂-H) that can protect the nanoflake (NF) morphology against the 800 °C high-temperature annealing process and activate the photoresponse of hematite until 800 nm wavelength excitation. MSnO₂-H has been fabricated by dropping SnCl₄ ethanol solution on hematite nanoflakes homogeneously grown over the conductive FTO glass substrate and annealed at 500 °C to synthesize the SnO₂ nanoparticles on hematite NFs. The Sn-treated samples were then placed in a furnace again, and the sintering process was conducted at 800 °C for 15 min. During this step, structure deformation of hematite occurs normally due to the grain boundary motion and oriented attachm

SUBMITTER: Ahn HJ 

PROVIDER: S-EPMC9535642 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature