期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 299, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2019.126997
关键词
Electrochemical sensors; Molybdenum disulfide; beta-Cyclodextrin; Multi-walled carbon nanotube; Graphene oxide nanoribbons; Graphene quantum dots; Quercetin
资金
- National Natural Science Foundation of China [21874114, 21475114, 21775133, 31701613]
- Project of Innovation Team of the Ministry of Education [IRT_17R90]
- Project of Science and Technology Plan of Hunan Province [2017XK2055]
- Hunan Provincial Innovation Foundation for Postgraduate [CX2018B364]
- Xiangtan University Innovation Foundation for Postgraduate [CX2018B048]
An electrochemical quercetin (Que) sensor based on molybdenum disulfide (MoS2 ) - carbon nanotube @ graphene oxide nanoribbons (CNTs@GONRs) / thiol-beta-cyclodextrin (HS-CD) / aminated graphene quantum dots (N-GQDs) was constructed. Portions of mull-walled carbon nanotubes (MWCNTs) were unzipped to form CNTs@GONRs, and MoS2 was successfully grown on it to form composites (MoS2-CNTs@GONRs). The obtained MoS2-CNTs@GONRs / HS-CD / GQDs nanocomposite was characterized by X-ray diffraction spectroscopy (XRD), X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, and Fourier transform infrared spectroscopy (FTIR). Under optimized conditions, the proposed sensor had an excellent detection performance for Que with a wide linear range from 2.0 x 10(-9) - 1.6 x 10(-6) M and a lower limit of detection (LOD) of 8.2 x 10(-10) M. The sensor also exhibited satisfactory stability and accuracy for Que detection in actual samples (juice and honey). The present work provided a novel method for the detection of Que and also proposed a new type of electrochemical sensing material.
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