Synthesis, characterization, and performance evaluation of polyamide‐Ag@SiO2 Raman substrate

IF 1.6 4区化学 Q4 CHEMISTRY, PHYSICAL

Surface and Interface Analysis Pub Date : 2024-03-01 DOI:10.1002/sia.7303

Shiying Wu, Lan Zhang, Tingting Zhang, Lujie Li, Anqi Li, Lingling Wang, Chang Liu, Weihua Li, Jiansheng Li, Rui Lu

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引用次数: 0

Abstract

At present, Ag nanoparticles have been widely used as Raman substrates, but their easy oxidation and aggregation have limited practical applications. In order to address the above problems, firstly, tetraethyl orthosilicate as a precursor was applied to synthesis silver coated with silica dioxide nanoparticles (Ag@SiO2). As a result, the surface of Ag nanoparticles is uniformly coated with a thin layer of SiO2 in order to solve the easy oxidation problem without adversely affecting their surface‐enhanced Raman scattering (SERS) performance. Furthermore, Ag@SiO2 nanoparticles were electrostatically deposited onto polyamide (PA) films to form a two‐dimensional PA‐Ag@SiO2 film substrate, thus resolving nanoparticle agglomeration issues and further improving the repeatability of the entire system. As can been from the SERS detection results obtained from the probe molecules and pollutants, the Raman signal on the PA‐Ag@SiO2 thin film substrate has a good degree of sensitivity, stability, and repeatability.

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聚酰胺-Ag@SiO2 拉曼衬底的合成、表征和性能评估

目前，银纳米粒子已被广泛用作拉曼基底，但其易氧化和聚集的特性限制了其实际应用。为了解决上述问题，首先以正硅酸四乙酯为前驱体，合成了银包覆二氧化硅纳米粒子（Ag@SiO2）。这样，银纳米粒子的表面就均匀地镀上了一层薄薄的二氧化硅，从而解决了容易氧化的问题，同时又不会对其表面增强拉曼散射（SERS）性能产生不利影响。此外，将 Ag@SiO2 纳米粒子静电沉积到聚酰胺（PA）薄膜上，形成二维 PA-Ag@SiO2 薄膜基底，从而解决了纳米粒子的团聚问题，进一步提高了整个系统的重复性。从探针分子和污染物的 SERS 检测结果可以看出，PA-Ag@SiO2 薄膜基底上的拉曼信号具有良好的灵敏度、稳定性和可重复性。

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

Surface and Interface Analysis 化学-物理化学

CiteScore

3.30

自引率

5.90%

发文量

130

审稿时长

4.4 months

期刊介绍： Surface and Interface Analysis is devoted to the publication of papers dealing with the development and application of techniques for the characterization of surfaces, interfaces and thin films. Papers dealing with standardization and quantification are particularly welcome, and also those which deal with the application of these techniques to industrial problems. Papers dealing with the purely theoretical aspects of the technique will also be considered. Review articles will be published; prior consultation with one of the Editors is advised in these cases. Papers must clearly be of scientific value in the field and will be submitted to two independent referees. Contributions must be in English and must not have been published elsewhere, and authors must agree not to communicate the same material for publication to any other journal. Authors are invited to submit their papers for publication to John Watts (UK only), Jose Sanz (Rest of Europe), John T. Grant (all non-European countries, except Japan) or R. Shimizu (Japan only).