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Green synthesis of Fe-ZnO nanoparticles with improved sunlight photocatalytic performance for polyethylene film deterioration and bacterial inactivation
Materials Science in Semiconductor Processing ( IF 4.2 ) Pub Date : 2021-03-01 , DOI: 10.1016/j.mssp.2020.105574
Sze-Mun Lam , Jin-Chung Sin , Honghu Zeng , Hua Lin , Haixiang Li , Yen-Yi Chai , Man-Kit Choong , Abdul Rahman Mohamed

Abstract Massive utilization and improper handling of plastics urge us to seek an applicable and efficient treatment method to reduce the plastic wastes. Herein, iron-doped ZnO (Fe-ZnO) nanoparticle was synthesized via a hibiscus rosa-sinensis leaf-assisted green method, and subsequently employed for low density polyethylene (LDPE) plastic degradation as well as Escherichia coli (E. coli) inactivation under sunlight irradiation. Myriad characterization techniques were used to investigate the structural, optical and electronic properties of green synthesized samples. The weight loss results presented that the photocatalytic performance of the LDPE/Fe-ZnO film was higher than those of pure LDPE and LDPE/un-doped ZnO films. The Fe-ZnO (2 wt%) nanoparticle demonstrated a greater photocatalytic deterioration of LDPE owing to its boosted optical absorption and the effective suppression of photogenerated charge carriers. The presence of carbonyl groups as the degradation product of LDPE was confirmed by Fourier transform infrared (FTIR) analysis. Field-emission scanning electron microscopy (FESEM) images also witnessed the formation of pores at the interface between polymer matrix and Fe-ZnO. Additionally, the LDPE/Fe-ZnO film exhibited an obvious antibacterial effect against E. coli as compared to LDPE/un-doped ZnO film. The current work put forward the construction of eco-friendly photocatalyst as a green strategy to tackle the challenges of plastic pollution.

中文翻译:

绿色合成具有改善的阳光光催化性能的 Fe-ZnO 纳米粒子对聚乙烯薄膜劣化和细菌灭活

摘要 塑料的大量使用和不当处理促使我们寻求一种适用且有效的处理方法来减少塑料废物。在此,铁掺杂的 ZnO (Fe-ZnO) 纳米颗粒通过芙蓉叶辅助绿色法合成,随后用于低密度聚乙烯 (LDPE) 塑料降解以及大肠杆菌 (E.coli) 灭活。阳光照射。无数表征技术被用于研究绿色合成样品的结构、光学和电子特性。失重结果表明,LDPE/Fe-ZnO 薄膜的光催化性能高于纯 LDPE 和 LDPE/未掺杂 ZnO 薄膜的光催化性能。Fe-ZnO (2 wt%) 纳米颗粒由于其增强的光吸收和对光生电荷载流子的有效抑制而表现出更大的 LDPE 光催化劣化。通过傅里叶变换红外 (FTIR) 分析证实存在羰基作为 LDPE 的降解产物。场发射扫描电子显微镜 (FESEM) 图像还见证了聚合物基体和 Fe-ZnO 之间界面处孔的形成。此外,与 LDPE/未掺杂的 ZnO 膜相比,LDPE/Fe-ZnO 膜对大肠杆菌表现出明显的抗菌作用。目前的工作提出了构建环保型光催化剂作为应对塑料污染挑战的绿色战略。通过傅里叶变换红外 (FTIR) 分析证实存在羰基作为 LDPE 的降解产物。场发射扫描电子显微镜 (FESEM) 图像还见证了聚合物基体和 Fe-ZnO 之间界面处孔的形成。此外,与 LDPE/未掺杂的 ZnO 膜相比,LDPE/Fe-ZnO 膜对大肠杆菌表现出明显的抗菌作用。目前的工作提出了构建环保型光催化剂作为应对塑料污染挑战的绿色战略。通过傅里叶变换红外 (FTIR) 分析证实存在羰基作为 LDPE 的降解产物。场发射扫描电子显微镜 (FESEM) 图像还见证了聚合物基体和 Fe-ZnO 之间界面处孔的形成。此外,与 LDPE/未掺杂的 ZnO 膜相比,LDPE/Fe-ZnO 膜对大肠杆菌表现出明显的抗菌作用。目前的工作提出了构建环保型光催化剂作为应对塑料污染挑战的绿色战略。与 LDPE/未掺杂的 ZnO 膜相比,LDPE/Fe-ZnO 膜对大肠杆菌表现出明显的抗菌作用。目前的工作提出了构建环保型光催化剂作为应对塑料污染挑战的绿色战略。与 LDPE/未掺杂的 ZnO 膜相比,LDPE/Fe-ZnO 膜对大肠杆菌表现出明显的抗菌作用。目前的工作提出了构建环保型光催化剂作为应对塑料污染挑战的绿色战略。
更新日期:2021-03-01
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