Au modified Bi2O3-TiO2 hybrid for photocatalytic synthesis of hydrogen peroxide
Liwei Feng, Bingdong Li, Yuqi Xiao, Lijuan Li, Yuqian Zhang, Qiannan Zhao, Guifu Zuo, Xianguang Meng, Vellaisamy A. L. Roy
Abstract
In this work, an Au modified Bi2O3-TiO2 (Au/Bi2O3-TiO2) hybrid is developed as a simple and effective photocatalyst for the production of H2O2. The modification of Bi2O3 improves the charge separation of photocatalyst and significantly enhances the photocatalytic activity of Au/TiO2 for H2O2 production. In-situ electron spin resonance studies shows stepwise single-electron oxygen reduction reaction (ORR) on the Au/Bi2O3-TiO2 photocatalyst for the production of H2O2. This work demonstrates the importance of heterojunction structure photocatalyst for improved performance of TiO2 in order to produce concentrated H2O2.
Topics & Concepts
PhotocatalysisHydrogen peroxideCatalysisElectron paramagnetic resonanceHeterojunctionHydrogen productionMaterials sciencePhotochemistryChemical engineeringChemistryOrganic chemistryOptoelectronicsNuclear magnetic resonancePhysicsEngineeringAdvanced Photocatalysis TechniquesTiO2 Photocatalysis and Solar CellsCatalytic Processes in Materials Science