Green synthesis of wurtzite Vg-ZnO nanoparticles: enhanced photocatalytic efficiency and antimicrobial properties

IF 2.5 4区化学 Q2 Engineering

Chemical Papers Pub Date : 2025-07-17 DOI:10.1007/s11696-025-04150-0

Prammitha Rajaram, Ambrose Rejo Jeice, M. Srinivasan

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Abstract

Environmental contamination, driven by direct and indirect causes, is a critical global challenge. Modern physicochemical techniques to ecological restoration have grown in popularity in order to develop eco-friendly and long-term solutions. The goal of this research is to create a bio-nanomaterial capable of digesting organic pollutants and suppressing microbial infections while producing no undesirable by-products. Veldt grape (Vg) leaf extract was used to produce zinc oxide nanoparticles (ZnO NPs) utilizing a green technique. Multiple approaches were used to characterize the physicochemical properties of Vg-ZnO NPs. UV–vis spectroscopy confirmed a maximum absorption range of 360–368 nm, while XRD examination revealed a wurtzite hexagonal phase with crystallite sizes ranging between 6.6 and 13.1 nm. FTIR spectra indicated the presence of flavonoids, phenols, and hydroxyl groups, while SEM pictures revealed a petal-like morphology, which EDAX validated for elemental composition. The photocatalytic activity of Vg-ZnO NPs was tested for MB dye degradation, and they achieved 90.6% disintegration during 120 min of UV light irradiation, with catalyst dose, dye concentration, pH, and reusability optimized. Antimicrobial effectiveness was evaluated against Edwardsiella tarda, Klebsiella pneumoniae, Staphylococcus aureus, and Candida albicans, with K. pneumoniae having the largest inhibition zone of 25 mm. The improved photocatalytic and antibacterial properties of Vg-ZnO NPs highlight their potential for organic pollutant breakdown and environmental remediation.

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纤锌矿Vg-ZnO纳米颗粒的绿色合成：增强光催化效率和抗菌性能

由直接和间接原因造成的环境污染是一项重大的全球性挑战。为了开发环保和长期的解决方案，现代物理化学技术在生态恢复方面越来越受欢迎。这项研究的目标是创造一种能够消化有机污染物和抑制微生物感染的生物纳米材料，同时不产生不良副产物。采用绿色技术制备了氧化锌纳米颗粒（ZnO NPs）。采用多种方法表征了Vg-ZnO NPs的物理化学性质。紫外可见光谱证实其最大吸收范围为360 ~ 368nm， XRD检测显示其为纤锌矿六方相，晶粒尺寸为6.6 ~ 13.1 nm。FTIR光谱显示其含有黄酮类化合物、酚类化合物和羟基，SEM图像显示其呈花瓣状，EDAX验证了其元素组成。对Vg-ZnO NPs光催化降解MB染料的活性进行了测试，在紫外光照射120 min时，催化剂剂量、染料浓度、pH和可重复使用性优化，降解率达到90.6%。对迟发爱德华氏菌、肺炎克雷伯氏菌、金黄色葡萄球菌和白色念珠菌的抑菌效果进行了评价，其中肺炎克雷伯氏菌的抑菌带最大，为25 mm。Vg-ZnO NPs的光催化和抗菌性能的提高凸显了其在有机污染物分解和环境修复方面的潜力。图形抽象

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来源期刊

Chemical Papers Chemical Engineering-General Chemical Engineering

CiteScore

3.30

自引率

4.50%

发文量

590

期刊介绍： Chemical Papers is a peer-reviewed, international journal devoted to basic and applied chemical research. It has a broad scope covering the chemical sciences, but favors interdisciplinary research and studies that bring chemistry together with other disciplines.