Two-dimensional Au@Ag nanodot array for sensing dual-fungicides in fruit juices with surface-enhanced Raman spectroscopy technique

被引：138
作者：
Wang, Kaiqiang [1 ,2 ,3 ]
Sun, Da-Wen [1 ,2 ,3 ,4 ]
Pu, Hongbin [1 ,2 ,3 ]
Wei, Qingyi [1 ,2 ,3 ]
机构：
[1] South China Univ Technol, Sch Food Sci & Engn, Guangzhou 510641, Guangdong, Peoples R China
[2] South China Univ Technol, Acad Contemporary Food Engn, Guangzhou Higher Educ Mega Ctr, Guangzhou 510006, Peoples R China
[3] Guangzhou Higher Educ Mega Ctr, Engn & Technol Res Ctr Guangdong Prov Intelligent, Guangzhou 510006, Peoples R China
[4] Natl Univ Ireland, Univ Coll Dublin, Agr & Food Sci Ctr, FRCFT, Dublin 4, Ireland
来源：
FOOD CHEMISTRY | 2020年 / 310卷
基金：
国家重点研发计划;
关键词：
SERS; Liquid-liquid interface; 2D nanodot array; Pesticides; Fruit juice; RAPID DETECTION; GOLD NANOPARTICLES; IMAGING TECHNIQUE; MOISTURE-CONTENT; FOOD QUALITY; PEAR FRUIT; SERS; RESIDUES; THIABENDAZOLE; MONOLAYER;
D O I：
10.1016/j.foodchem.2019.125923
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
The design of a novel and reliable plasmonic platform for detecting multiple chemical contaminants in the complex matrix is an exciting topic in the food industry. Herein, a high-performance surface-enhanced Raman scattering (SERS) two-dimensional (2D) nanodot array was designed through liquid-liquid interfacial self-assembly of the core-shell nanoparticles (Au@Ag NPs) and exploited for assessment of dual-fungicides in pear, apple, and orange juices. The 2D Au@Ag nanodot array delivered good uniformity and reproducibility with the substrate-to-substrate relative standard deviation values of 10.51%. This substrate could be used for detecting thiram and thiabendazole in aqueous solutions with the limit of detection of 0.0011 and 0.051 ppm, respectively. Furthermore, satisfactory recoveries ranging from 76-134% for the juices were obtained, demonstrating that the high-throughput 2D Au@Ag nanodot arrays are promising for their applications as sensitive SERS platforms for monitoring chemical contaminants in food products, especially in the beverage industry.
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页数：10
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