Controlled Growth of WO₃ Photoanode under Various pH Conditions for Efficient Photoelectrochemical Performance.

ABSTRACT: Herein, the effects of the precursor solution's acidity level on the crystal structure, morphology, nucleation, and growth of WO₃·nH₂O and WO₃ nanostructures are reported. Structural investigations on WO₃·nH₂O using X-ray diffraction and Fourier-transform infrared spectroscopy confirm that the quantity of hydrate groups increases due to the interaction between H⁺ and water molecules with increasing HCl volume. Surface analysis results support our claim that the evolution of grain size, surface roughness, and growth direction on WO₃·nH₂O and WO₃ nanostructures rely on the precursor solution's pH value. Consequently, the photocurrent density of a WO₃ photoanode using a HCl-5 mL sampl

SUBMITTER: Yoo SJ 

PROVIDER: S-EPMC10780304 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature