Fabrication of TiN–Ag@Ag Composite Substrate with SERS Performance and Application in Ibuprofen Detection

IF 0.8 4区 化学 Q4 SPECTROSCOPY Journal of Applied Spectroscopy Pub Date : 2024-09-11 DOI:10.1007/s10812-024-01798-6
Zhiheng Zheng, Fan Zhang, Yankun Liu, Zhiwu Wang, Yuan Pei, Zhengang Wu, Bo Li, Yingna Wei, Ying Chen, Hengyong Wei, Jingwu Li
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Abstract

TiN–Ag@Ag composite substrates were prepared via ammonia reduction nitridation followed by electrochemical deposition. Fabricated TiN–Ag@Ag substrates were characterized using X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy, transmission electron microscopy, and ultraviolet-visible spectrophotometry. The surface-enhanced Raman spectroscopy activity of these substrates was evaluated using ibuprofen as the probe molecule. The size of the Ag particles prepared via electrochemical deposition was approximately 1 μm, and Ag nanoparticles with an average particle size of 100 nm were uniformly distributed on the surface of TiN–Ag films. The Raman signal of ibuprofen was significantly enhanced, and the minimum detection concentration of ibuprofen was 10–5 M. The mechanism by which the TiN–Ag@Ag composite substrate enhanced the Raman signals was analyzed using ultraviolet photoelectron spectroscopy and density functional theory implemented in the Gaussian software. Overall, charge transfer and the local electromagnetic field effect enhanced the Raman signals of ibuprofen.

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具有 SERS 性能的 TiN-Ag@Ag 复合基底的制备及其在布洛芬检测中的应用
通过氨还原氮化和电化学沉积制备了 TiN-Ag@Ag 复合基底。利用 X 射线衍射、X 射线光电子能谱、扫描电子显微镜、透射电子显微镜和紫外-可见分光光度法对制备的 TiN-Ag@Ag 基底进行了表征。以布洛芬为探针分子,对这些基底的表面增强拉曼光谱活性进行了评估。通过电化学沉积制备的银粒子的尺寸约为 1 μm,平均粒径为 100 nm 的银纳米粒子均匀地分布在 TiN-Ag 薄膜的表面。利用紫外光电子能谱和高斯软件实现的密度泛函理论分析了 TiN-Ag@Ag 复合基底增强拉曼信号的机理。总的来说,电荷转移和局部电磁场效应增强了布洛芬的拉曼信号。
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来源期刊
CiteScore
1.30
自引率
14.30%
发文量
145
审稿时长
2.5 months
期刊介绍: Journal of Applied Spectroscopy reports on many key applications of spectroscopy in chemistry, physics, metallurgy, and biology. An increasing number of papers focus on the theory of lasers, as well as the tremendous potential for the practical applications of lasers in numerous fields and industries.
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