Stable and efficient solar-driven photoelectrochemical water splitting into H<sub>2</sub> and O<sub>2</sub> based on a BaTaO<sub>2</sub>N photoanode decorated with CoO microflowers
Shunhang Wei, Shufang Chang, Fan Yang, Zhengping Fu, Gang Liu, Xiaoxiang Xu
Abstract
Stable and efficient photoelectrochemical water splitting has been achieved using a BaTaO2N photoanode decorated with CoO microflowers. The CoO microflowers effectively collect holes from BaTaO2N which kinetically protects BaTaO2N against photocorrosion. A Faraday efficiency of almost unity (99.2%) has been recorded for O2 evolution reactions. The tips of the CoO microflowers are the most active sites for water oxidation reactions.
Topics & Concepts
Water splittingMaterials sciencePhotoelectrochemistryPhotoelectrochemical cellNanotechnologyOptoelectronicsChemical engineeringChemistryCatalysisPhysical chemistryPhotocatalysisElectrochemistryElectrodeEngineeringBiochemistryElectrolyteAdvanced Photocatalysis TechniquesCopper-based nanomaterials and applicationsQuantum Dots Synthesis And Properties