Self-ordered silver nanoparticles on nanoconcave plasmonic lattices for SERS multi-antibiotic detection

IF 6.6 2区 物理与天体物理 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY
Gohar Ijaz Dar, Elisabet Xifre-Perez, Lluis F. Marsal
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引用次数: 0

Abstract

Antibiotic detection at trace levels in different matrices is an important tool for environmental monitoring, clinical diagnostics, and pharmaceutical quality control. Using aluminum concavities covered with silver nanoparticles (AgNPs), this study introduces another approach for the surface-enhanced Raman spectroscopy (SERS) detection of antibiotics. The optimal substrate provided by the aluminum concavities and the outstanding plasmonic enhancement of the AgNPs greatly enhances the adsorbed Raman signals of the antibiotic molecules. First, we used a controlled magnetron sputtering technique to deposit AgNPs onto the SERS substrates, synthesized by anodizing aluminum into highly organized concave dimensions. Detection limits approaching the 10−10 M concentration level, owing to an EF of 108, proved that these substrates successfully detected various antibiotics, including amoxicillin and tetracycline. An in-depth examination of the SERS spectra revealed distinctive peaks that correspond to functional groups, allowing for the exact identification and quantification of the antibiotic compounds. The synergistic impact of the aluminum concavities and silver nanofractals results in extremely homogenous substrates that are reproducible and sensitive.
纳米凹等离子体晶格上的自有序银纳米粒子用于SERS多抗生素检测
不同基质中痕量抗生素的检测是环境监测、临床诊断和药品质量控制的重要工具。利用覆盖银纳米粒子(AgNPs)的铝凹腔,介绍了另一种表面增强拉曼光谱(SERS)检测抗生素的方法。由铝凹腔提供的最佳底物和AgNPs出色的等离子体增强,极大地增强了抗生素分子的吸附拉曼信号。首先,我们使用可控磁控溅射技术将AgNPs沉积在SERS衬底上,该衬底由阳极氧化铝合成成高度有序的凹尺寸。由于EF为108,检测限接近10−10 M浓度水平,证明这些底物成功检测到各种抗生素,包括阿莫西林和四环素。对SERS光谱的深入检查显示了与官能团对应的独特峰,从而可以准确地识别和定量抗生素化合物。铝凹形和银纳米分形的协同作用产生了极为均匀的衬底,具有可重复性和敏感性。
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来源期刊
Nanophotonics
Nanophotonics NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY
CiteScore
13.50
自引率
6.70%
发文量
358
审稿时长
7 weeks
期刊介绍: Nanophotonics, published in collaboration with Sciencewise, is a prestigious journal that showcases recent international research results, notable advancements in the field, and innovative applications. It is regarded as one of the leading publications in the realm of nanophotonics and encompasses a range of article types including research articles, selectively invited reviews, letters, and perspectives. The journal specifically delves into the study of photon interaction with nano-structures, such as carbon nano-tubes, nano metal particles, nano crystals, semiconductor nano dots, photonic crystals, tissue, and DNA. It offers comprehensive coverage of the most up-to-date discoveries, making it an essential resource for physicists, engineers, and material scientists.
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