3D-Rosettelike 纳米结构装饰的柔性多孔基材对液态和气态腐胺和尸胺的超灵敏 SERS 分析,Analytical Chemistry

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3D-Rosettelike 纳米结构装饰的柔性多孔基材对液态和气态腐胺和尸胺的超灵敏 SERS 分析
Analytical Chemistry ( IF 6.7 ) Pub Date : 2022-03-23 , DOI: 10.1021/acs.analchem.1c05013
Jiaojiao Sun _{1,

2} , Zhiqiang Zhang _{1,

2,

3} , Haiwen Li _{1,

2} , Huancai Yin _{1,

2} , Peng Hao ₄ , Xide Dai ₅ , Keming Jiang ₂ , Cong Liu ₂ , Tao Zhang ₂ , Jian Yin _{1,

2,

6} , Yizhi Song _{1,

2} , Wuping Zhou _{2,

6} , Jing Gao _{1,

2}

Affiliation

腐胺和尸胺是变质食品中的有毒生物胺，对食品安全构成严重威胁。在这项工作中，我们报道了一种用对巯基苯甲酸（p-MBA) 单层检测猪肉样品中的液态和气态腐胺和尸胺。SERS 基板是通过结合柔性多孔聚（偏二氟乙烯）（PVDF）膜上 ZnO 纳米棒阵列的 3D 形态的优点和 Au 纳米颗粒种子在 Au 薄膜包覆的 ZnO 纳米棒上的原位化学生长而制成的，其产生了具有丰富的 SERS 活性热点的 3D-rosettelike BigAuNP/Au/ZnO/P 异质结构，显着增强了拉曼增强的局部表面等离子体共振 (LSPR) 效应和电荷转移 (CT) 效应。该 SERS 底物显示出高灵敏度、重现性、稳定性和均一性。随着p-MBA分子单分子层作为传感界面，我们的SERS基底实现了10分钟内对液体腐胺和尸胺的高灵敏度定量检测，检测限（LOD）分别为3.2×10 ^–16和1.6×10 ^–13 M，分别。此外，该传感器对低浓度的气态胺分子显示出有效的 SERS 响应（腐胺：1.26 × 10 ^–9 M，尸胺：2.5 × 10 ^–9 M）。此外，该传感器成功应用于测定腐胺和尸胺的总含量。此外，该 SERS 传感器的实用性通过猪肉样品中液态和气态胺的测量得到验证，在灵敏检测食品腐败变质方面显示出巨大的潜在应用。

"点击查看英文标题和摘要"

Ultrasensitive SERS Analysis of Liquid and Gaseous Putrescine and Cadaverine by a 3D-Rosettelike Nanostructure-Decorated Flexible Porous Substrate

Putrescine and cadaverine are toxic biogenic amines in spoiled food, which poses a serious threat to food security. In this work, we reported a highly sensitive three-dimensional (3D)-rosettelike surface-enhanced Raman spectroscopy (SERS) substrate functionalized with a p-mercaptobenzoic acid (p-MBA) monolayer to detect liquid and gaseous putrescine and cadaverine in pork samples. The SERS substrate was made by a combination of the merit of the 3D morphology of ZnO nanorod arrays on a flexible porous poly(vinylidene fluoride) (PVDF) membrane and the in situ chemical growth of Au nanoparticle seeds on Au film-coated ZnO nanorods, which produced a 3D-rosettelike BigAuNP/Au/ZnO/P heterostructure with abundant SERS-active hot spots that significantly enhanced the localized surface plasmonic resonance (LSPR) effect and charge-transfer (CT) effect of Raman enhancement. This SERS substrate showed high sensitivity, reproducibility, stability, and uniformity. With the p-MBA molecular monolayer as the sensing interface, our SERS substrate realized the highly sensitive and quantitative detection of liquid putrescine and cadaverine within 10 min, with a limit of detection (LOD) of 3.2 × 10^–16 and 1.6 × 10^–13 M, respectively. Additionally, the sensor showed efficient SERS responses to gaseous amine molecules at low concentrations (putrescine: 1.26 × 10^–9 M, cadaverine: 2.5 × 10^–9 M). Further, the sensor was successfully applied to determine the total content of putrescine and cadaverine. Moreover, the practicability of this SERS sensor was verified by the measurement of liquid and gaseous amines in pork samples, and it showed great potential applications for sensitive detection of food spoilage.

更新日期：2022-03-23

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