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Surface-orientated platinum nanoparticles electrodeposited on a carbon substrate as a high performance electrocatalyst for glucose oxidation reaction in alkaline media
- Source :
- Materials Science and Engineering: B. 268:115147
- Publication Year :
- 2021
- Publisher :
- Elsevier BV, 2021.
-
Abstract
- The glucose oxidation reaction (GOR) is strictly controlled by the surface structure of an electrode. Here, we report the effect of potentiostatic deposition (PSD), potentiocyclic deposition (PCD), and a combination of these two modes (PSD/PCD) for platinum deposition on a carbon-based substrate as an electrocatalyst for an alkaline GOR. An optimized electrode results in current density of 18 mA cm−2 at −0.3 V, open circuit potential of −0.85 V, exchange current density of 2.11 mA cm−2, charge transfer resistance of 89.01 Ω cm−2 and a low diffusive behavior toward GOR. The total Pt loadings for these electrodes are PCD > PSD > PSD/PCD, while the Pt quantity on top of the electrode surface is PSD/PCD > PCD > PSD. These results illustrate that applying PSD prior to PCD reduces Pt loading, helps the formation of Pt particles at the top surface, and thus leads to better electrocatalytic activity toward GOR.
- Subjects :
- Materials science
Open-circuit voltage
Mechanical Engineering
Exchange current density
Substrate (chemistry)
chemistry.chemical_element
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
Condensed Matter Physics
Electrocatalyst
Platinum nanoparticles
01 natural sciences
Redox
0104 chemical sciences
Chemical engineering
chemistry
Mechanics of Materials
Electrode
General Materials Science
0210 nano-technology
Platinum
Subjects
Details
- ISSN :
- 09215107
- Volume :
- 268
- Database :
- OpenAIRE
- Journal :
- Materials Science and Engineering: B
- Accession number :
- edsair.doi...........6f1593b3c6839b430a23cd4cd9162736