@article{YU2022, 
author = {Chengye YU and Mengxi TAN and Chengdong TAO and Yuxuan HOU and Chuanbao LIU and Huimin MENG and Yanjing SU and Lijie QIAO and Yang BAI},
title = {Remarkably enhanced piezo-photocatalytic performance in BaTiO3/CuO heterostructures for organic pollutant degradation},
year = {2022},
journal = {Journal of Advanced Ceramics},
volume = {11},
number = {3},
pages = {414-426},
keywords = {heterostructure, polarization, photocatalysis, piezotronics},
url = {https://www.sciopen.com/article/10.1007/s40145-021-0544-4},
doi = {10.1007/s40145-021-0544-4},
abstract = {Introducing polarization field of piezoelectric materials is an effective strategy to improve photocatalytic performance. In this study, a new type of BaTiO3/CuO heterostructure catalyst was designed and synthesized to achieve high piezo-photocatalytic activity through the synergy of heterojunction and piezoelectric effect. The BaTiO3/CuO heterostructure shows a significantly enhanced piezo-photocatalytic degradation efficiency of organic pollutants compared with the individual BaTiO3 nanowires (NWs) and CuO nanoparticles (NPs). Under the co-excitation of ultrasonic vibration and ultraviolet radiation, the optimal degradation reaction rate constant k of polarized BaTiO3/CuO heterostructure on methyl orange (MO) dye can reach 0.05 min-1, which is 6.1 times of photocatalytic rate and 7 times of piezocatalytic rate. The BaTiO3/CuO heterostructure with remarkable piezo-photocatalytic behavior provides a promising strategy for the development of high-efficiency catalysts for wastewater purification, and it also helps understand the coupling mechanism between piezoelectric effect and photocatalysis.}
}