受生态启发利用鹅掌楸合成氧化锌/氧化铜纳米复合材料:揭示其卓越的光催化性能、对大肠杆菌和金黄色葡萄球菌的抗菌功效以及潜伏指纹研究

IF 2.4 4区 化学 Q3 CHEMISTRY, PHYSICAL
Ionics Pub Date : 2024-09-19 DOI:10.1007/s11581-024-05823-8
K. S. Mamatha, H. M. Suresh Kumar, T. D. Puttaraju, T. L. Soundarya, G. Nagaraju
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引用次数: 0

摘要

本研究的重点是以 niruri 植物叶提取物为封端剂和燃料,轻松绿色合成 ZnO/CuO 纳米复合材料(NCs)。利用 XRD、傅立叶变换红外光谱、SEM-EDAX、HR-TEM、UV-Vis DRS 和 PL 研究了合成的 NCs 与纯 ZnO 和 CuO NPs 的特性。XRD 分析表明它们具有结晶性质,平均结晶尺寸为 25 纳米。扫描电子显微镜图像显示了颗粒的团聚,而 EDAX 则证实了纯相的元素组成。HR-TEM 图像阐明了球形和六角形的存在。傅立叶变换红外分析证实了 Zn - O 和 Cu - O 等键振动的存在。经测定,ZnO、CuO NPs 和 ZnO/CuO NCs 的光能带隙分别为 3.27、2.8 和 2.7 eV。对合成的 NCs 进行的 PL 研究表明,它们发出蓝色的光,峰值位置在 493 纳米。ZnO/CuO NCs 的光催化活性对亚甲蓝染料的降解效率为 97.93%,对玫瑰红染料的降解效率为 53%。此外,采用 96 孔微孔板法研究了 ZnO/CuO NCs 对大肠杆菌和金黄色葡萄球菌两种细菌的抗菌活性,结果显示了显著的抑菌区,与普通抗生素环丙沙星相比,ZnO/CuO NCs 对两种金黄色葡萄球菌的 MIC 值均为 3.金黄色葡萄球菌和大肠杆菌的 MIC 值均为 3.90 µg/mL ,而金黄色葡萄球菌和大肠杆菌的 MBC 值分别为 2.05 µg/mL 和 2.19 µg/mL。此外,还对制备的材料进行了潜伏指纹活性测试。这些 NCs 表现出卓越的性能,能生成可见、清晰的潜伏指纹图像。因此,利用黑千层叶提取物合成的 ZnO/CuO 纳米复合材料(NCs)可作为废水处理的理想催化剂和有效的细菌抗菌剂,并可用于潜指纹应用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Eco-inspired synthesis of ZnO/CuO nanocomposites using Phyllanthus niruri: unveiling superior photocatalytic, antibacterial efficacy against Escherichia coli and Staphylococcus aureus, and latent fingerprint studies

Eco-inspired synthesis of ZnO/CuO nanocomposites using Phyllanthus niruri: unveiling superior photocatalytic, antibacterial efficacy against Escherichia coli and Staphylococcus aureus, and latent fingerprint studies

The current study focuses on the facile green synthesis of ZnO/CuO nanocomposites (NCs) mediated by Phyllanthus niruri leaf extract as a capping agent and fuel. The characterization of the synthesized NCs in comparison with the pure ZnO and CuO NPs was conducted using XRD, FT-IR, SEM-EDAX, HR-TEM, UV–Vis DRS, and PL studies. XRD analysis revealed their crystalline nature with an average crystallite size of 25 nm. SEM images showed particle agglomeration, and EDAX confirmed the elemental composition of the pure phase. HR-TEM images elucidated the presence of spherical and hexagonal shapes. The presence of bond vibrations such as Zn − O and Cu − O was confirmed by FT-IR analysis. The optical energy bandgaps were determined to be 3.27, 2.8, and 2.7 eV for ZnO, CuO NPs, and ZnO/CuO NCs respectively. PL studies of the synthesized NCs showed a blue emission with a peak position at 493 nm. The photocatalytic activity of ZnO/CuO NCs exhibited a degradation efficiency of 97.93% against methylene blue dye and 53% towards the Rose Bengal dye. Furthermore, the investigation of antibacterial activity by 96-well microtiter plate method against two bacterial strains, Escherichia coli and Staphylococcus aureus, revealed significant zones of inhibition, and when compared to the common antibiotic ciprofloxacin, the MIC values were 3.90 µg/mL for both Staphylococcus aureus and Escherichia coli, while the MBC values were 2.05 µg/mL for Staphylococcus aureus and 2.19 µg/mL for Escherichia coli. The prepared materials were additionally tested for latent fingerprint activity. The NCs displayed excellent properties, producing visible, clear images of latent fingerprints. Thus, the ZnO/CuO nanocomposites (NCs) synthesized using Phyllanthus niruri leaf extract could be a desirable catalyst for wastewater treatment and a potent antimicrobial agent against the bacteria and can be used for latent fingerprint applications.

Graphical Abstract

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来源期刊
Ionics
Ionics 化学-电化学
CiteScore
5.30
自引率
7.10%
发文量
427
审稿时长
2.2 months
期刊介绍: Ionics is publishing original results in the fields of science and technology of ionic motion. This includes theoretical, experimental and practical work on electrolytes, electrode, ionic/electronic interfaces, ionic transport aspects of corrosion, galvanic cells, e.g. for thermodynamic and kinetic studies, batteries, fuel cells, sensors and electrochromics. Fast solid ionic conductors are presently providing new opportunities in view of several advantages, in addition to conventional liquid electrolytes.
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