通过光催化氧化工艺从废水中去除药物被认为是一种有吸引力的方法和环境友好的解决方案。本报告旨在评估Ag/g-C3N4/ZnO纳米棒在制药行业废水处理中的实际应用潜力。催化剂是通过直接和环境友好的策略合成的。具体来说,通过简单的自组装方法构建了g-C3N4/ZnO纳米棒异质结构,然后通过光还原途径将Ag纳米颗粒修饰在g-C3N4/ZnO纳米棒上。结果表明,三种商业药物(扑热息痛,阿莫西林,在小剂量Ag/g-C3N4/ZnO纳米棒(0.08gL-1)的存在下,高浓度(40mgL-1)的头孢氨苄)被显着降解。Ag/g-C3N4/ZnO纳米棒光催化剂对扑热息痛的降解性能比原始g-C3N4、ZnO纳米棒高3.8、1.8、1.3倍,和g-C3N4/ZnO纳米棒。此外,Ag/g-C3N4/ZnO纳米棒具有出色的可重用性和化学稳定性,可实现78%的对乙酰氨基酚降解效率,并在五个循环后保持光催化剂的化学结构。此外,本研究还讨论了光催化机理的解释和光催化药物降解能力的比较。
Pharmaceutical drugs\' removal from wastewater by photocatalytic oxidation process is considered as an attractive approach and environmentally friendly solution. This report aims to appraise the practical application potential of Ag/g-C3N4/ZnO nanorods toward the wastewater treatment of the pharmaceutical industry. The catalysts are synthesized by straightforward and environmentally-friendly strategies. Specifically, g-C3N4/ZnO nanorods heterostructure is constructed by a simple self-assembly method, and then Ag nanoparticles are decorated on g-C3N4/ZnO nanorods by a photoreduction route. The results show that three commercial drugs (paracetamol, amoxicillin, and cefalexin) with high concentration (40 mg L-1) are significantly degraded in the existence of a small dosage of Ag/g-C3N4/ZnO nanorods (0.08 g L-1). The Ag/g-C3N4/ZnO nanorods photocatalyst exhibits degradation performance of paracetamol higher 3.8, 1.8, 1.3 times than pristine g-C3N4, ZnO nanorods, and g-C3N4/ZnO nanorods. Furthermore, Ag/g-C3N4/ZnO nanorods have an excellent reusability and a chemical stability that achieved paracetamol degradation efficiency of 78% and remained chemical structure of the photocatalyst after five cycles. In addition, the photocatalytic mechanism explanation and comparison of photocatalytic drugs\' degradation ability have also been discussed in this study.