The aim is to investigate how ammonolysis affects defect levels in BaTaO2 and its photocatalytic properties.
Utilized x-ray photoelectron spectroscopy to analyze defect concentrations
Employed electron paramagnetic spectroscopy for defect location studies
Applied vibrating kelvin probe surface photovoltage spectroscopy to assess energetics
Ammonolysis with N2-diluted NH3 significantly reduced Ta(IV) defects in BaTaO2
Enhanced photocatalytic activity was observed for water oxidation
Defect concentration analysis revealed specific defect energetics and locations
Abstract
X-ray photoelectron spectroscopy, electron paramagnetic spectroscopy, and vibrating kelvin probe surface photovoltage spectroscopy observe defect concentrations, locations and their energetics.