Zada Farah Muhammad, Soonmin Ho, Khan Behramand, Alamzeb Muhammad, Sun Wei, Ikram Jawad, Rehman Najeeb Ur
Institute of Chemical Sciences, University of Swat, Swat, 19120, Khyber Pakhtunkhwa, Pakistan.
Faculty of Health and Life Sciences, INTI International University, Putra Nilai, 71800, Negeri Sembilan, Malaysia.
Heliyon. 2024 Dec 21;11(1):e41320. doi: 10.1016/j.heliyon.2024.e41320. eCollection 2025 Jan 15.
In recent years, antibiotic pollution has become a major environmental concern. The extensive production and widespread use of prescribed antibiotics have significantly impacted ecosystems. The main objective of the present study is to investigate the photocatalytic degradation of the antibiotic norfloxacin (NFX) under visible light. In this work photocatalysis of NFX was demonstrated under the source of visible radiation by using carbon dopped-titania ( ) nanoparticles as catalyst prepared by a modified sol-gel method using n-hexane and benzene as carbon precursors. The synthesized samples were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), and energy dispersive X-ray (EDX) techniques. The effect of various parameters like initial concentration, catalyst dosage, irradiation time, pH, and inorganic ions were investigated on the photocatalysis of NFX. The XRD and SEM analysis exhibits that the synthesized nanoparticles were of anatase phase having spherical shape with a mean particle size of about 11-17 nm. The results shows that the best photocatalytic efficiency (74 % & 81 %) was achieved at pH = 8 in 150 min. The degradation of NFX follows pseudo-2nd -order kinetics, while favors Langmuir isotherm model. The inhibition effect of various inorganic ions on the photocatalysis of NFX was in the order of F>SO >HCO >NO . The present study shows that is an optimistic and efficient catalyst for the photocatalysis of NFX antibiotics.
近年来，抗生素污染已成为一个主要的环境问题。处方抗生素的大量生产和广泛使用对生态系统产生了重大影响。本研究的主要目的是研究可见光下抗生素诺氟沙星（NFX）的光催化降解。在这项工作中，通过使用正己烷和苯作为碳前驱体的改进溶胶-凝胶法制备的碳掺杂二氧化钛（ ）纳米颗粒作为催化剂，在可见辐射源下证明了NFX的光催化作用。通过扫描电子显微镜（SEM）、X射线衍射（XRD）和能量色散X射线（EDX）技术对合成的样品进行了表征。研究了初始浓度、催化剂用量、辐照时间、pH值和无机离子等各种参数对NFX光催化的影响。XRD和SEM分析表明，合成的 纳米颗粒为锐钛矿相，呈球形，平均粒径约为11-17nm。结果表明，在pH = 8时，150分钟内可实现最佳光催化效率（74%和81%）。NFX的降解遵循准二级动力学，同时符合朗缪尔等温线模型。各种无机离子对NFX光催化的抑制作用顺序为F>SO >HCO >NO 。本研究表明， 是一种用于NFX抗生素光催化的乐观且高效的催化剂。
