Flexible Graphene Platform-based Electrochemical Sensor for Sensitive Determination of Dopamine / 分析化学
Chinese Journal of Analytical Chemistry
;
(12): 1039-1046, 2018.
Article
in Chinese
| WPRIM
| ID: wpr-692346
ABSTRACT
The chemical vapor deposition grown graphene was transferred onto flexible polyethylene terephthalate surface to fabricate a graphene platform electrode ( GPE) , and gold nanoparticles ( AuNPs) were electrodeposited on GPE to form an AuNPs modified GPE ( AuNPs/GPE ) . The formation of AuNPs was confirmed by scanning electron microscopy ( SEM) , energy dispersive spectrometer ( EDS) , high-resolution transmission electron microscope ( HR-TEM) , X-ray diffraction ( XRD) and Raman spectra. On AuNPs/GPE, dopamine ( DA ) displayed a pair of well-defined redox peaks with highly enhanced peak currents compared with those on GPE. At detection potential of 0. 20 V, AuNPs/GPE sensor presented a wide linear range of 0. 1 μmol/L to 400. 0 μmol/L of DA with a detection limit of 3. 9 nmol/L (S/N=3). In addition, the proposed sensor allowed highly selective and sensitive, stable and fast amperometric sensing of DA.
Full text:
Available
Index:
WPRIM (Western Pacific)
Type of study:
Diagnostic study
Language:
Chinese
Journal:
Chinese Journal of Analytical Chemistry
Year:
2018
Type:
Article
Similar
MEDLINE
...
LILACS
LIS