光催化
罗丹明B
异质结
降级(电信)
光降解
复合数
压电
材料科学
热液循环
催化作用
污染物
化学工程
纳米技术
复合材料
光电子学
化学
计算机科学
有机化学
电信
工程类
作者
Li Li,Wanlu Cao,Jiahao Yao,Wei Liu,Feng Li,Chunchang Wang
出处
期刊:Nanomaterials
[MDPI AG]
日期:2022-01-22
卷期号:12 (3): 353-353
被引量:26
摘要
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.
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