Improved photoredox activity of the 2D Bi<sub>4</sub>Ti<sub>3</sub>O<sub>12</sub>–BiVO<sub>4</sub>–Bi<sub>4</sub>V<sub>2</sub>O<sub>10</sub> heterostructure <i>via</i> the piezoelectricity-enhanced charge transfer effect
Wuyou Wang, Kai Zhu, Beibei Zhang, Xiaowei Chen, Dongqi Ma, Xuewen Wang, Rongbin Zhang, Yin Liu, Jinxin Shen, Pengyu Dong, Xinguo Xi
Abstract
piezo-photocatalytic activity towards Cr(VI) removal and oxygen evolution is boosted remarkably under both illumination and ultrasound treatments. The promoted photocatalytic activity can be ascribed to the accelerated photoexcited carrier separation efficiency driven by the polarization electric field and the synergy effect in the heterostructure. This work provides a simple and sustainable strategy for the design and development of piezo-photocatalysts with high photoredox activity capacity.
Topics & Concepts
PhotocatalysisPiezoelectricityMaterials scienceHydrothermal circulationHeterojunctionCharge carrierElectric fieldPolarization (electrochemistry)OptoelectronicsNanotechnologyChemical engineeringCatalysisComposite materialChemistryPhysical chemistryPhysicsEngineeringBiochemistryQuantum mechanicsAdvanced Photocatalysis TechniquesPerovskite Materials and ApplicationsMultiferroics and related materials