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Ag@WS2 quantum dots for Surface Enhanced Raman Spectroscopy: Enhanced charge transfer induced highly sensitive detection of thiram from honey and beverages.
Food Chem. 2021 May 15; 344:128570.FC

Abstract

Novel SERS substrates is urgently in demand for rapid and sensitive analysis of toxic agrochemicals from food. In this work, a monodispersed tungsten disulfide quantum dots modified silver nanosphere (Ag@WS2QD) was prepared and used as SERS substrate. Ag@WS2QD generated uniform and stable SERS signals within 2 min, displaying great promise in "mixing and reading" detection. Compared to unmodified colloidal silver nanoparticles, 4 times higher analytical enhancement factor was found in Ag@WS2QD. Density functional theory calculation verified the enhanced charge transfer within the coupling systems of molecule-Ag@WS2QD. Besides, the unique surface properties are beneficial for the enrichment of specific molecule. Both the chemical extraction and enhanced charge transfer contributes to rapid and sensitive SERS detection of Ag@WS2QD. A "mixing and reading" SERS method for thiram from honey and four kinds of juice was developed from Ag@WS2QD, showing great promise for rapid and direct SERS detection for toxic agrochemicals and further applications.

Authors+Show Affiliations

School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China.School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China.School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China.School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China.School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China.School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China.Shandong Academy of Occupational Health and Occupational Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan 250062, China. Electronic address: suncedar@126.com.School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China; Suzhou Institute of Shandong University, Suzhou, Jiangsu 215123, China. Electronic address: jingchen@sdu.edu.cn.School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

33199122

Citation

Song, Yinshuang, et al. "Ag@WS2 Quantum Dots for Surface Enhanced Raman Spectroscopy: Enhanced Charge Transfer Induced Highly Sensitive Detection of Thiram From Honey and Beverages." Food Chemistry, vol. 344, 2021, p. 128570.
Song Y, Huang HC, Lu W, et al. Ag@WS2 quantum dots for Surface Enhanced Raman Spectroscopy: Enhanced charge transfer induced highly sensitive detection of thiram from honey and beverages. Food Chem. 2021;344:128570.
Song, Y., Huang, H. C., Lu, W., Li, N., Su, J., Cheng, S. B., Lai, Y., Chen, J., & Zhan, J. (2021). Ag@WS2 quantum dots for Surface Enhanced Raman Spectroscopy: Enhanced charge transfer induced highly sensitive detection of thiram from honey and beverages. Food Chemistry, 344, 128570. https://doi.org/10.1016/j.foodchem.2020.128570
Song Y, et al. Ag@WS2 Quantum Dots for Surface Enhanced Raman Spectroscopy: Enhanced Charge Transfer Induced Highly Sensitive Detection of Thiram From Honey and Beverages. Food Chem. 2021 May 15;344:128570. PubMed PMID: 33199122.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Ag@WS2 quantum dots for Surface Enhanced Raman Spectroscopy: Enhanced charge transfer induced highly sensitive detection of thiram from honey and beverages. AU - Song,Yinshuang, AU - Huang,Hai-Cai, AU - Lu,Wenhui, AU - Li,Nianlu, AU - Su,Jie, AU - Cheng,Shi-Bo, AU - Lai,Yongchao, AU - Chen,Jing, AU - Zhan,Jinhua, Y1 - 2020/11/07/ PY - 2020/09/12/received PY - 2020/11/01/revised PY - 2020/11/02/accepted PY - 2020/11/18/pubmed PY - 2021/1/21/medline PY - 2020/11/17/entrez KW - Charge transfer KW - Malachite Green (PubChem CID: 11294) KW - Pesticide analysis KW - Quantum dots KW - Surface Enhanced Raman Spectroscopy KW - Thiram KW - Thiram (PubChem CID: 5455) KW - Tungsten disulfide SP - 128570 EP - 128570 JF - Food chemistry JO - Food Chem VL - 344 N2 - Novel SERS substrates is urgently in demand for rapid and sensitive analysis of toxic agrochemicals from food. In this work, a monodispersed tungsten disulfide quantum dots modified silver nanosphere (Ag@WS2QD) was prepared and used as SERS substrate. Ag@WS2QD generated uniform and stable SERS signals within 2 min, displaying great promise in "mixing and reading" detection. Compared to unmodified colloidal silver nanoparticles, 4 times higher analytical enhancement factor was found in Ag@WS2QD. Density functional theory calculation verified the enhanced charge transfer within the coupling systems of molecule-Ag@WS2QD. Besides, the unique surface properties are beneficial for the enrichment of specific molecule. Both the chemical extraction and enhanced charge transfer contributes to rapid and sensitive SERS detection of Ag@WS2QD. A "mixing and reading" SERS method for thiram from honey and four kinds of juice was developed from Ag@WS2QD, showing great promise for rapid and direct SERS detection for toxic agrochemicals and further applications. SN - 1873-7072 UR - https://www.unboundmedicine.com/medline/citation/33199122/Ag@WS2_quantum_dots_for_Surface_Enhanced_Raman_Spectroscopy:_Enhanced_charge_transfer_induced_highly_sensitive_detection_of_thiram_from_honey_and_beverages L2 - https://linkinghub.elsevier.com/retrieve/pii/S0308-8146(20)32432-8 DB - PRIME DP - Unbound Medicine ER -