Crystal Facet Engineering of TiO₂ Nanostructures for Enhancing Photoelectrochemical Water Splitting with BiVO₄ Nanodots.

ABSTRACT: Although bismuth vanadate (BiVO₄) has been promising as photoanode material for photoelectrochemical water splitting, its charge recombination issue by short charge diffusion length has led to various studies about heterostructure photoanodes. As a hole blocking layer of BiVO₄, titanium dioxide (TiO₂) has been considered unsuitable because of its relatively positive valence band edge and low electrical conductivity. Herein, a crystal facet engineering of TiO₂ nanostructures is proposed to control band structures for the hole blocking layer of BiVO₄ nanodots. We design two types of TiO₂ nanostructures, which are nanorods (NRs) and nanoflowers (NFs) with different (001) and (110) crystal facets, respectively, and fabricate BiV

SUBMITTER: Lee MG 

PROVIDER: S-EPMC8789981 | biostudies-literature | 2022 Jan

REPOSITORIES: biostudies-literature