Novel application of Ag/PbBiO2I nanocomposite in piezocatalytic degradation of rhodamine B via harvesting ultrasonic vibration energy

• Main Authors: Ziyu Li, Qingle Zhang, Linkun Wang, Jieyu Yang, Ying Wu, Yiming He
• Format: Article
• Language: English
• Published: Elsevier 2021-10-01
• Series: Ultrasonics Sonochemistry
• Subjects: PbBiO2I; Piezoelectric effect; RhB; Piezocatalytic
• Online Access: http://www.sciencedirect.com/science/article/pii/S1350417721002716
• ISSN: 1350-4177

Ag/PbBiO2I nanocomposite was synthesized and firstly applied in piezocatalytic degradation of rhodamine B (RhB) under ultrasonic vibration. The two-dimensional structure endows PbBiO2I nanosheets piezoelectric property, so that it can drive the piezocatalytic reaction under ultrasonic vibration. The loading of Ag nanoparticles forms Schottky barriers between the Ag-PbBiO2I contact region, which improves the separation of charge carriers and subsequently increases the piezocatalytic efficiency. The RhB degradation rate of the optimal Ag/PbBiO2I sample is 0.0165 min−1, which reaches 6.8 times that of pure PbBiO2I. This work indicates that the PbBiO2I nanosheet shows promising potential in utilizing ultrasonic vibration energy.