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Piezoelectric-Induced Internal Electric Field in Bi~2~WO~6~ Nanoplates for Boosting the Photocatalytic Degradation of Organic Pollutants by Zhenying Jiang; Xianjun Tan; Jingyi Xu; Yuxiong Huang is a Materials Science article available to read on EtoBox.
What is Piezoelectric-Induced Internal Electric Field in Bi~2~WO~6~ Nanoplates for Boosting the Photocatalytic Degradation of Organic Pollutants about?
The internal electric field induced by a piezoelectric effect is a promising method to suppress rapid electron-hole recombination of photocatalysis for environmental remediation. Herein, we fully utilized both piezoelectric and photocatalytic properties of Bi 2 WO 6 nanoplates for the removal of organic pollutants. The degradation rate constant of piezo-photocatalysis is dramatically boosted to 0.077 min -1 by the Bi 2 WO 6 nanoplates, which is 4.2-fold of the photocatalysis alone. The superior catalytic activity of Bi 2 WO 6 nanoplates was attributed to the accelerated electron-hole pair separation efficiency associated with the enhancement of the piezoelectric effect-induced internal electric field. Based on the theoretical calculation, the bandgap of Bi 2 WO 6 nanoplates would decrease from 1.99 to 1.67 eV under mechanical strains, indicating that broader light harvesting and faster charge transfer can be achieved with the assistance of the piezoelectric field. Accordingly, multiple reactive oxygen species (•O 2 -and •OH) are dominant for the degradation activity based on the quenching experiments and EPR analysis, outperforming piezocatalysis and photocatalysis. We have provide
Who reads Piezoelectric-Induced Internal Electric Field in Bi~2~WO~6~ Nanoplates for Boosting the Photocatalytic Degradation of Organic Pollutants?
It is typically read by researchers, students, and practitioners in Materials Science.
- Author
- Zhenying Jiang; Xianjun Tan; Jingyi Xu; Yuxiong Huang
- Publisher
- American Chemical Society (ACS)
- Published
- 2022
- Language
- EN
- Field
- Materials Science (Physical Sciences)