Piezoelectric Effect and Z-Scheme Charge Transfer in BaTiO 3 /BiOCl Heterojunctions for Photocatalytic CO 2 -to-CO Conversion
Abstract
Artificial photosynthesis provides a sustainable route for the synthesis of high-value chemicals from CO 2, yet its efficiency remains limited by low light utilization and fast charge recombination. Here, a direct Z-scheme BaTiO 3 /BiOCl (BTO/BOC) heterojunction was prepared using a hydrothermal synthesis route. Owing to the combined effects of piezoelectric polarization and Z-scheme charge transfer, the heterojunction achieved a CO 2 reduction rate of 56.45 μmol g –1 h –1 under simultaneous application of light and ultrasonic irradiation, corresponding to 2.06- and 7.49-fold enhancements compared with pure BiOCl (BOC) nanosheets and BaTiO 3 (BTO) nanoparticles, respectively. This study demonstrates a piezoelectric-assisted photocatalytic strategy, providing valuable insights into efficient CO 2 conversion and sustainable energy development.
Fields of Study & Subjects
Advanced Photocatalysis Techniques
CO2 Reduction Techniques and Catalysts
TiO2 Photocatalysis and Solar Cells
Publication details
- Journal / source
- ACS Applied Nano Materials
- Publisher
- American Chemical Society (ACS)
- Volume
- 9
- Issue
- 5
- Pages
- 2596–2605
- Publication date
- 28 January 2026
- Language
- EN