Integrating Ni-MOF/g-C3N4/chitosan derived S-scheme photocatalyst for efficient visible light photodegradation of tetracycline and antibacterial activities

IF 7.7 2区 环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES
Musaib Y. Wani , Nahida Bashir , Sajad Ahmad , Murtaza Rehman , Shakeel A. Shah , Sajad Ur Rehman Beig
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引用次数: 0

Abstract

Nickel MOF (Ni-MOF) nanoparticles were successfully anchored onto a polymeric graphitic carbon nitride (g-C3N4) and Chitosan nanostructure (NS) using an eco-friendly and straightforward synthesis method. These newly fabricated photocatalysts were thoroughly characterized with standard techniques, revealing that the nanoscale Ni-MOF particles were uniformly deposited on the sheet-like g-C3N4 matrix. This configuration demonstrated excellent antimicrobial properties and outstanding photodegradation of tetracycline hydrochloride under visible light exposure. The MOF@GC photocatalyst exhibited robust bactericidal activity against pathogens like Escherichia coli, Staphylococcus aureus, Klebsiella pneumoniae, and Pseudomonas aeruginosa. Additionally, it achieved superior visible-light-driven degradation of tetracycline in a significantly shorter time compared to other studies, with approximately 96% of the tetracycline being degraded in just 70 min under visible light. These findings suggest that the effective deposition of Ni-MOF onto the g-C3N4 structure reduces the recombination rate of photogenerated electrons and holes, thereby enhancing the photocatalytic efficiency of pure g-C3N4 under visible light. The proposed catalytic mechanism, informed by valence band (VB) and conduction band (CB) data from cyclic voltammetry measurements, further supports this conclusion. The MOF@GC photocatalyst is a promising nanostructured material for antimicrobial applications and visible-light-driven photocatalysis.

Abstract Image

整合 Ni-MOF/g-C3N4/Chitosan 衍生 S-Scheme 光催化剂,实现四环素的高效可见光光降解和抗菌活性。
采用一种环保、简单的合成方法,成功地将镍纳米of (Ni-MOF)纳米颗粒固定在聚合物石墨氮化碳(g-C3N4)和壳聚糖(NS)纳米结构上。用标准技术对这些光催化剂进行了全面表征,发现纳米级Ni-MOF颗粒均匀沉积在片状g-C3N4基体上。该结构表现出优异的抗菌性能和在可见光下对盐酸四环素的良好光降解。MOF@GC光催化剂对大肠杆菌、金黄色葡萄球菌、肺炎克雷伯菌和铜绿假单胞菌等病原体具有很强的杀菌活性。此外,与其他研究相比,该研究在可见光下降解四环素的时间明显更短,大约96%的四环素在可见光下仅70分钟就被降解。这些结果表明,Ni-MOF在g-C3N4结构上的有效沉积降低了光生电子和空穴的复合速率,从而提高了纯g-C3N4在可见光下的光催化效率。循环伏安法测量的价带(VB)和导带(CB)数据进一步支持了这一结论。MOF@GC光催化剂是一种很有前途的纳米结构材料,用于抗菌和可见光驱动光催化。
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
Environmental Research
Environmental Research 环境科学-公共卫生、环境卫生与职业卫生
CiteScore
12.60
自引率
8.40%
发文量
2480
审稿时长
4.7 months
期刊介绍: The Environmental Research journal presents a broad range of interdisciplinary research, focused on addressing worldwide environmental concerns and featuring innovative findings. Our publication strives to explore relevant anthropogenic issues across various environmental sectors, showcasing practical applications in real-life settings.
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