Z-Scheme-Inspired Lanthanide-Infused WO3/g-C3N4 Photocatalyst for Rapid Sunlight Degradation of Fluoroquinolone Antibiotics

IF 3.7 3区化学 Q2 CHEMISTRY, APPLIED

Topics in Catalysis Pub Date : 2026-02-17 DOI:10.1007/s11244-026-02270-9

S. Rubesh Ashok Kumar, Mooni Siva Prasad, D. Vasvini Mary, P. Saravanan, A. S. Vigneshraaj, G. A. Suganya Josephine, Mohammed Alsawat, Krishna Prakash Arunachalam, Mir Waqas Alam

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Abstract

In the advanced oxidation process, photocatalytic degradation stands out as one of the most eco-friendly methods for treating wastewater. Recently, transition metal oxides and rare earth metal oxides supported heterogeneous nanomaterials have emerged as promising photocatalysts for the next generation. This study focuses on the efficient photocatalytic degradation of the moxifloxacin (MX) antibiotic using a lanthanide-infused WO₃-based gC₃N₄ nanomaterial (LWCN). The synthesized photocatalyst exhibited enhanced light absorption and high chemical stability, leading to a significant reduction in moxifloxacin in wastewater. The photocatalytic performance of the LWCN was examined by assessing the degradation of MX under different light exposure conditions. Experiments were conducted across varying initial concentrations of MX, revealing that degradation efficiency decreased with increasing antibiotic concentration. The obtained results show that the degradation percentage of the MX antibiotic (5 ppm) was exceptionally high, reaching 99.87% under sunlight (180 min) and 99.8% under visible light (240 min). Kinetic studies confirmed pseudo-first-order kinetics with rate constants (5 ppm − 8.27 × 10^− 2 min^− 1), indicating that degradation rates decreased as antibiotic concentration increased. The LWCN nanomaterial demonstrates significant potential for effectively eliminating MX from aqueous environments, highlighting its applicability in wastewater treatment under natural sunlight and visible light conditions.

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受z方案启发的镧系注入WO3/g-C3N4光催化剂用于氟喹诺酮类抗生素的快速阳光降解

在高级氧化过程中，光催化降解是最环保的废水处理方法之一。近年来，过渡金属氧化物和稀土金属氧化物支持的非均相纳米材料已成为下一代光催化剂的发展方向。本研究的重点是利用镧系注入wo3基gC3N4纳米材料（LWCN）光催化降解莫西沙星（MX）抗生素。合成的光催化剂具有较强的光吸收能力和较高的化学稳定性，可显著降低废水中莫西沙星的含量。通过不同光照条件下对MX的降解，考察了LWCN的光催化性能。在不同初始浓度的MX中进行了实验，发现降解效率随着抗生素浓度的增加而降低。结果表明，MX抗生素（5 ppm）的降解率非常高，在日光下（180 min）和可见光下（240 min）的降解率分别达到99.87%和99.8%。动力学研究证实了准一级动力学的速率常数（5 ppm−8.27 × 10−2 min−1），表明降解率随着抗生素浓度的增加而降低。LWCN纳米材料在有效消除水环境中的MX方面显示出巨大的潜力，突出了其在自然阳光和可见光条件下的废水处理中的适用性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Topics in Catalysis 化学-物理化学

CiteScore

5.70

自引率

5.60%

发文量

197

审稿时长

2 months

期刊介绍： Topics in Catalysis publishes topical collections in all fields of catalysis which are composed only of invited articles from leading authors. The journal documents today’s emerging and critical trends in all branches of catalysis. Each themed issue is organized by renowned Guest Editors in collaboration with the Editors-in-Chief. Proposals for new topics are welcome and should be submitted directly to the Editors-in-Chief. The publication of individual uninvited original research articles can be sent to our sister journal Catalysis Letters. This journal aims for rapid publication of high-impact original research articles in all fields of both applied and theoretical catalysis, including heterogeneous, homogeneous and biocatalysis.