光降解
三元运算
过硫酸盐
光催化
辐照
可见光谱
降级(电信)
土霉素
材料科学
异质结
化学
催化作用
化学工程
光化学
抗生素
光电子学
有机化学
计算机科学
生物化学
电信
物理
核物理学
工程类
程序设计语言
作者
Ehsan Azadi,Ali Akbar Zinatizadeh,Davoud Yazdani,Mika Sillanpää,Mohammad Joshaghani
标识
DOI:10.1016/j.inoche.2024.112600
摘要
Degussa P25-TiO2/ZnO was impregnated with (Fe (NO3)3·9H2O) solution to give a ternary chain heterojunction of P25-TiO2/1.5 wt% Fe0/ZnO (denoted as P25/Fe0/ZnO) (Gap Energy, Eg = 2.84 eV). The obtained nanocomposite was used in the presence of K2S2O8 for the degradation of oxytetracycline (OTC) in an aqueous solution under visible-light irradiation. The response surface methodology (RSM) was employed to understand the effects of catalyst dosage, pH, and K2S2O8 on OTC degradation. The RSM could correlate the experimental value of OTC degradation with the predicted values. The best OTC degradation efficiency (89.3 %) was obtained with 0.28 g/L of P25/Fe0/ZnO at 3.02 mg/L of [K2S2O8] and pH 7.5 for 120 min. The superior performance of the catalytic system was attributed to the attraction effects between the negative charge on the catalyst surface and the positive charge on the dimethylammonium functional group on OTC at pH = 7.5. The OTC adsorption rate on P25/Fe0/ZnO was investigated using the linear form of the pseudo-second-order kinetic model. The heterogeneous nature of the catalyst was studied by a hot filtration test. Finally, the generated products of photocatalytic degradation were determined using GC–MS analysis, and the oxidation route and an acceptable mechanism were suggested.
科研通智能强力驱动
Strongly Powered by AbleSci AI