Cobalt Hexacyanoferrate-modified Graphene Platform Electrodeand Its Electrochemical Sensing toward Hydrogen Peroxide
10.11895/j.issn.0253-3820.170022
- VernacularTitle:铁氰化钴修饰石墨烯平面电极对过氧化氢的传感作用
- Author:
Hongcai ZHAO
;
Pu ZHANG
;
Shehong LI
;
Hongxia LUO
- Keywords:
Chemical vapor deposition;
Graphene;
Cobalt hexacyanoferrate nanoparticle;
Chemically modified platform electrode;
Hydrogen peroxide
- From:
Chinese Journal of Analytical Chemistry
2017;45(6):830-836
- CountryChina
- Language:Chinese
-
Abstract:
A large-area graphene platform electrode (GPE) was fabricated by transferring the chemical vapor deposition (CVD) graphene grown on Cu foils to polyethylene terephthalate (PET) substrates with the aid of polymethyl-methacrylate (PMMA).Then cobalt hexacyanoferrate (CoHCF) was electrodeposited on the GPE by cyclic voltammetry to obtain a CoHCF/GPE.The morphology and electrochemical properties of this electrode were studied by scanning electron microscope (SEM), electrochemical impedance spectroscopy (EIS) and the electrochemical measurements.Results showed that the electrode had favorable sensing effect toward H2O2.On the basis of this, a new nonenzyme H2O2 sensor was constructed.Under the optimal experimental conditions, the proposed sensor had a quick response to the addition of H2O2 (about 2 s) with a wide linear rang (5 × 10-3-1.2 mmol/L) and a low detection limit (7.1 nmol/L).This sensor was easy to fabricate and showed excellent stability and anti-interference ability.
