Environmental Institute, Viet Nam Maritime University, Haiphong, Vietnam.
Environ Technol. 2021 Mar;42(8):1292-1301. doi: 10.1080/09593330.2019.1665110. Epub 2019 Sep 18.
In this work, we reported synthesis a novel magnetically separable g-CN/Zn doped FeO composite (g-CN/ZnFe) by a simple polyol thermal method. The characteristics of the was checked by XRD, SEM, TEM, XPS, PL technologies. The optimized weight ratio of g-CN and Zn doped FeO was investigated. In addition, the photocatalytic activities of the composite products were checked by degradation of Cephalexin (CEX) under visible light. The results showed that g-CN/ZnFe composite with an added 20% g-CN exhibited the highest photocatalytic activity for cephalexin under visible light irradiation. The improved photocatalytic activity of 20% g-CN/ZnFe can be ascribed to the low combination rate of photoinduced electron/hole pairs. Especially, g-CN/ZnFe can be recovered easily by using an external magnetic field and the high stability after six runs. These properties of the g-CN/ZnFe could be a promising photocatalyst for the degradation of pharmaceutical contaminants.
在这项工作中，我们通过简单的多元醇热法报道了一种新型的磁性可分离的 g-CN/Zn 掺杂 FeO 复合材料（g-CN/ZnFe）的合成。通过 XRD、SEM、TEM、XPS、PL 技术对 的特性进行了检查。研究了 g-CN 和 Zn 掺杂 FeO 的最佳重量比。此外，通过可见光下头孢氨苄（CEX）的降解考察了复合产物的光催化活性。结果表明，在可见光照射下，添加 20%g-CN 的 g-CN/ZnFe 复合材料对头孢氨苄表现出最高的光催化活性。20%g-CN/ZnFe 光催化活性的提高可归因于光生电子/空穴对的低复合率。特别是，g-CN/ZnFe 可以很容易地通过外加磁场回收，并且在六次运行后具有很高的稳定性。g-CN/ZnFe 的这些性质可能是一种很有前途的用于降解药物污染物的光催化剂。
