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半孔Cu₂O涂层Au/Ag等离子体纳米复合材料作为SERS传感平台用于超敏感检测

Xiangxin Xue¹, Zhuo Wang², Cuimei Zhao²

¹Key Laboratory of Preparation and Applications of Environmental Friendly Materials (Jilin Normal University), Ministry of Education, Changchun 130103, PR China; The Joint Laboratory of Intelligent Manufacturing of Energy and Environmental Materials, Changchun 130103, PR China.

Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy

|March 16, 2025

概括

这项研究开发了新型的介孔Cu2O涂层Au/Ag等离子体纳米复合材料,用于超敏感的表面增强拉曼散射 (SERS) 检测. 新的基板显著提高了检测微量分子和挥发性有机化合物的灵敏度和稳定性.

科学领域:

材料科学材料科学材料科学
分析化学分析化学
纳米技术纳米技术

背景情况:

表面增强拉曼散射 (SERS) 提供了超灵敏的检测,但在热点生成,分析剂丰富和稳定性方面存在局限性.
现有的SERS基板难以满足在环境干扰下提高灵敏度和可靠性能的需求.

研究的目的:

设计和制造用于改进SERS应用的Au/Ag涂层的新型半孔Cu2O等离子体纳米复合材料 (NC).
通过提高灵敏度,分析剂丰富度和稳定性来解决SERS的局限性.

主要方法:

合成覆盖Au/Ag等离子体纳米复合材料 (NCs) 的半孔Cu2O.
纳米复合材料结构和等离子体性质的表征.
使用4 - 默卡普托酸 (4-MBA) 和胺作为目标分析物的SERS性能评估.

主要成果:

Au/Ag@Cu2ONCs表现出增强的SERS活性,增强因子为3.78 × 106,4-MBA的检测极限为10−11M.
该基质在SERS检测中表现出极好的选择性和可重复性.
Au/Ag@Cu2O NCs在环境空气中成功检测出气,一种挥发性有机化合物 (VOC),这表明其实际适用性.

结论:

覆盖Au/Ag等离子体纳米复合材料的半孔Cu2O是高度有效的SERS基材.
这些NC克服了SERS的关键局限性,提供了卓越的灵敏度,丰富能力和稳定性.
开发的基板对微量分子和挥发性有机气体的实际检测具有重大前景.

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