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- Title
Synergistic Piezo-Photocatalysis of BiOCl/NaNbO 3 Heterojunction Piezoelectric Composite for High-Efficient Organic Pollutant Degradation.
- Authors
Li, Li; Cao, Wenjun; Yao, Jiahao; Liu, Wei; Li, Feng; Wang, Chunchang
- Abstract
Piezo-photocatalytic technique is a new-emerging strategy to alleviate photoinduced charge recombination and thus enhance catalytic performance. The heterojunction construction engineering is a powerful approach to improve photocatalytic performance. Herein, the BiOCl/NaNbO3 with different molar ratios piezoelectric composites were successfully synthesized by hydrothermal methods. The piezo/photodegradation rate (k value) of Rhodamine B (RhB) for BiOCl/NaNbO3 (BN-3, 0.0192 min−1) is 2.2 and 5.2 times higher than that of BiOCl (0.0089 min−1) and NaNbO3 (0.0037 min−1), respectively. The enhanced performance of BN-3 composite can be attributed to the heterojunction construction between BiOCl and NaNbO3. In addition, the piezo/photodecomposition ratio of RhB for BN-3 (87.4%) is 8.8 and 2.2 times higher than that of piezocatalysis (9.9%) and photocatalysis (40.4%), respectively. We further investigated the mechanism of piezocatalysis, photocatalysis, and their synergy effect of BN-3 composite. This study favors an in-depth understanding of piezo-photocatalysis, providing a new strategy to improve the environmental pollutant remediation efficiency of piezoelectric composites.
- Subjects
PIEZOELECTRIC composites; HETEROJUNCTIONS; PHOTOCATALYSIS; POLLUTANTS; RHODAMINE B; PHOTODEGRADATION; ENVIRONMENTAL remediation; LEAD zirconate titanate
- Publication
Nanomaterials (2079-4991), 2022, Vol 12, Issue 3, p353
- ISSN
2079-4991
- Publication type
Article
- DOI
10.3390/nano12030353