Self-assembled Au/Ag@MIL(Fe) hybrids for ultra-sensitive SERS detection of furfuryl mercaptan

被引：1
作者：
Chen, Diantao [1 ]
Wang, Dingzhong [2 ]
Wang, Chenchen [1 ]
Li, Peng [2 ]
Sun, Shihao [2 ]
Wang, Yong [3 ]
Liu, Anran [1 ]
Wei, Wei [1 ]
机构：
[1] Southeast Univ, Sch Chem & Chem Engn, Key Lab Environm Med Engn, Minist Educ, Nanjing 210009, Peoples R China
[2] Beijing Life Sci Acad, Beijing 102200, Peoples R China
[3] Nanjing Publ Secur Bur, Inst Forens Sci & Technol, Nanjing 210001, Peoples R China
来源：
SENSORS AND ACTUATORS B-CHEMICAL | 2024年 / 420卷
基金：
中国国家自然科学基金;
关键词：
SERS; Furfuryl mercaptan; MIL(Fe); Au/Ag NRs; METAL-ORGANIC FRAMEWORK;
D O I：
10.1016/j.snb.2024.136507
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Developing a high-sensitive platform for furfuryl mercaptan (FFT) detection is significant but remains challenging. Herein, Au/Ag core-shell nanorods@metal-organic frameworks (Au/Ag@MIL(Fe)) hybrids were constructed through electrostatic interaction, which combined the abundant "hot spots" regions caused by Au/Ag NRs and the great enrichment ability of porous MIL(Fe) and amplified the Raman signal greatly, achieving high sensitivity in FFT solution and volatile gas detection. The enhancement factor (EF) of the Au/Ag@MIL(Fe) substrates reaches 3.96 x 107. The linear detection ranges of FFT solution and gas were 10-3 - 10- 8 M and 102 -105 ppb, respectively. The LODs were as low as 4.94 x 10-9 M for solution detection and 77.6 ppb for gas detection and were comparable to HPLC-MS methods. Meanwhile, the Au/Ag@MIL(Fe) hybrids demonstrated favorable reproducibility, stability, selectivity, and successful application for FFT detection in coffee, with a recovery rate from 92.3 % to 108.0 %. The proposed quantitative strategy has significant potential in real food sample analysis.
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页数：8
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