光催化
材料科学
纳米复合材料
二氧化钛
降级(电信)
化学工程
聚乙烯醇
纳米技术
热稳定性
催化作用
化学
复合材料
有机化学
电信
计算机科学
工程类
作者
Anhua Jiang,Xinwen Huang,Geshan Zhang,Wanquan Yang
出处
期刊:Catalysts
[MDPI AG]
日期:2022-11-01
卷期号:12 (11): 1336-1336
被引量:2
标识
DOI:10.3390/catal12111336
摘要
In recent years, antibiotics (such as levofloxacin (LEV)) have been detected widely in the environment. Semiconductor photocatalysis has been recognized as a promising technology for removing pollutants in the environment. In this work, nitrogen and carbon codoped titanium dioxide nano-catalyst (NCD-TiO2) was immobilized in polyvinyl alcohol (PVA) matrix to form PVA/NCD-TiO2 films through solution casting and thermal treatment, which exhibited good photocatalytic efficiency for LEV degradation. The results showed that about 42% LEV can be degraded after 2 h in the presence of PVA/NCD-TiO2 nanocomposite film (the weight ratio of NCD-TiO2 to PVA is 8% and thermal treatment is 120 °C) under visible light. Moreover, possible pathways of photocatalytic degradation of LEV according to the detected intermediates are proposed, which provide insight into the degradation mechanism of LEV by using PVA/NCD-TiO2 photocatalytic films. Finally, the synthesized PVA/NCD-TiO2 films exhibited excellent reusability and stability in photocatalysis. This work provides fundamental support for the design of a high-stability, excellent photocatalyst for practical application.
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