磺胺嘧啶
结晶度
降级(电信)
催化作用
污染物
钛酸钡
材料科学
环境污染
化学工程
水处理
核化学
化学
无机化学
复合材料
环境工程
有机化学
环境科学
计算机科学
陶瓷
电信
抗生素
生物化学
环境保护
工程类
作者
Daijun Meng,Yuqi Xiang,Ziwei Yang,Hao Yuan,Liang Tang,Shiyang Li
出处
期刊:Molecules
[Multidisciplinary Digital Publishing Institute]
日期:2024-04-10
卷期号:29 (8): 1719-1719
被引量:2
标识
DOI:10.3390/molecules29081719
摘要
Piezocatalysis, a heterogeneous catalytic technique, leverages the periodic electric field changes generated by piezoelectric materials under external forces to drive carriers for the advanced oxidation of organic pollutants. Antibiotics, as emerging trace organic pollutants in water sources, pose a potential threat to animals and drinking water safety. Thus, piezoelectric catalysis can be used to degrade trace organic pollutants in water. In this work, BaTiO3 and La-doped BaTiO3 were synthesized using an improved sol–gel–hydrothermal method and used as piezocatalytic materials to degrade sulfadiazine (SDZ) with ultrasound activation. High-crystallinity products with nano cubic and spherical morphologies were successfully synthesized. An initial concentration of SDZ ranging from 1 to 10 mg/L, a catalysis dosage range from 1 to 2.5 mg/mL, pH, and the background ions in the water were considered as influencing factors and tested. The reaction rate constant was 0.0378 min−1 under the optimum working conditions, and the degradation efficiency achieved was 89.06% in 60 min. La-doped BaTiO3 had a better degradation efficiency, at 14.98% on average, compared to undoped BaTiO3. Further investigations into scavengers revealed a partially piezocatalytic process for the degradation of SDZ. In summary, our work provides an idea for green environmental protection in dealing with new types of environmental pollution.
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