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Electrochemically Reduced Graphene Oxide-nafion/Au Nanoparticle Modified Electrode for Hydrogen Peroxide Sensing
- Source :
- Nanomaterials and Nanotechnology, Vol 6, Iss, p 30 (2016), Nanomaterials and Nanotechnology
- Publication Year :
- 2016
- Publisher :
- SAGE Publishing, 2016.
-
Abstract
- n this paper, a non-enzymatic hydrogen peroxide (H2O2) sensor, based on Au nanoparticles (AuNPs) electrodepos‐ ited on an electrochemically reduced graphene oxide(ER‐ GO)-Nafion modified glass carbon electrode (GCE), was reported. The graphene oxide-(GO-)Nafion nanocompo‐ sites were first assembled on the GCE surface to produce a GO-Nafion electrode. GO was then electrochemically reduced to produce an ERGO-Nafion modified GCE (to be subsequently denoted as GCE/ERGO-Nafion). Afterwards, AuNPs were electrodeposited on the modified GCE to form a GCE/ERGO-Nafion/AuNPs electrode. The ERGO-Nafion nanocomposites and the electrodeposited AuNPs were characterized by infrared spectroscopy and scanning electron microscopy (SEM). The results showed that the GO was reduced successfully and the AuNPs were uniformly dispersed on the GCE/ERGO-Nafion electrode with a size of about 48nm. The cyclic voltammograms and the am‐ perometric method were used to evaluate the electrocata‐ lytic properties of the GCE/ERGO-Nafion/AuNPs electrode. The results showed that the modified electrode displayed good electrocatalytic activity in relation to the reduction of H2O2 with a detection limit of 2 μM of (H2O2) based on a signal-to-noise ratio of three. The sensor also indicated great sensitivity (574.8 μA/(mM cm2)), wide linear range (0.02-23 mM), good selectivity and reproduci‐ bility, and long-term stability.
- Subjects :
- Materials science
Inorganic chemistry
Oxide
Nanoparticle
02 engineering and technology
010402 general chemistry
Electrochemistry
01 natural sciences
law.invention
chemistry.chemical_compound
law
Nafion
lcsh:Technology (General)
Electrical and Electronic Engineering
Non-enzymatic Sensor
Nanocomposite
Graphene
Electrochemical
Hydrogen Peroxide
021001 nanoscience & nanotechnology
Amperometry
0104 chemical sciences
Electronic, Optical and Magnetic Materials
chemistry
Chemical engineering
Electrode
Ceramics and Composites
lcsh:T1-995
0210 nano-technology
Au Nanoparticles
Biotechnology
Subjects
Details
- Language :
- English
- ISSN :
- 18479804
- Volume :
- 6
- Database :
- OpenAIRE
- Journal :
- Nanomaterials and Nanotechnology
- Accession number :
- edsair.doi.dedup.....0b244562eb773e402ff7221542003104