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Construction of Reusable PMMA–Ag/g-C3N4/Ag Hybrid Substrates with Plasmonic-Enhanced Intrinsic Raman Signals for Quantitative SERS Detection and Green Degradation
ACS Sustainable Chemistry & Engineering ( IF 8.4 ) Pub Date : 2021-09-14 , DOI: 10.1021/acssuschemeng.1c03742
Xiuting Li 1 , Hongmei Liu 2 , Ying Chen 1 , Chenjie Gu 1 , Guodong Wei 3 , Jun Zhou 1 , Tao Jiang 1
Affiliation  

Pesticides and additives, extensively used in the raw agriculture samples and processed food, have attracted tremendous interests owing to their latent menace to the surroundings and human health. Herein, a rationally designed multifunctional polymethyl methacrylate-silver/graphite-like carbon nitride/silver (PMMA–Ag/g-C3N4/Ag) hybrid substrate with plasmonic-enhanced intrinsic Raman signals was exploited and served as a recyclable and quantitative surface-enhanced Raman scattering (SERS) sensor. Especially, the as-prepared flexible substrate with an electromagnetic enhancement factor of 1.64 × 106 could realize the sensitive monitoring and in-situ degradation of thiabendazole (TBZ) and carmine acid (CA) on apple or in applesauce with limits of detection as low as 2.29 × 10–6 and 6.76 × 10–5 mg/mL. Furthermore, heightened linear correlations with coefficients of 0.996 and 0.997 were accurately acquired using the film peak of PMMA as an internal standard. It was proved that the proposed sophisticated substrate may present attractive superior-in-practice multiplexed quantitative monitoring and facile decomposing of harmful molecules. The resulting recovery values distributed from 60.9 to 126% for the deeply processed foods that were decorated by 10–4 to 1 mg/mL CA together with TBZ.

中文翻译:

可重复使用的 PMMA-Ag/g-C3N4/Ag 混合基板的构建,具有等离子增强的本征拉曼信号,用于定量 SERS 检测和绿色降解

农药和添加剂广泛用于未加工的农业样品和加工食品中,由于它们对环境和人类健康的潜在威胁而引起了极大的兴趣。在此,开发了一种合理设计的多功能聚甲基丙烯酸甲酯-银/类石墨氮化碳/银(PMMA-Ag/gC 3 N 4 /Ag)杂化基底,具有等离子体增强的本征拉曼信号,并用作可回收和定量的表面-增强型拉曼散射 (SERS) 传感器。特别是,所制备的柔性基板的电磁增强因子为 1.64 × 10 6能实现对苹果敏感监测和原位噻苯咪唑(TBZ)的降解和胭脂红酸(CA),或在与苹果酱检测低至的极限作为2.29×10 -6和6.76×10 -5毫克/毫升。此外,使用 PMMA 的薄膜峰作为内标准确地获得了系数为 0.996 和 0.997 的增强线性相关性。事实证明,所提出的复杂基材可能具有有吸引力的实用多重定量监测和有害分子的轻松分解。对于用10–4至 1 mg/mL CA 和 TBZ修饰的深加工食品,所得回收率值分布在 60.9% 至 126% 之间。
更新日期:2021-09-27
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