Abstract
The Pt-Sn/CNDs electrocatalyst was synthesized by the alcohol reduction method with the aim to reduce platinum loading and improve electroactivity. XPS results showed that the nanoparticles were present in the form of Pt-Sn metallic alloy with a significant amount of SnO- species which facilitate the rapid oxidation of CO intermediates. The lattice parameter of Pt in Pt-Sn/CNDs electrocatalyst was calculated to be 0.3926 nm; this value is higher than 0.3921 nm, the lattice parameter of Pt in Pt/CNDs electrocatalyst. XRD results proved that incorporating tin (Sn) into the Pt/CNDs electrocatalyst modifies the face centred cubic shape of platinum to a crystalline structure which improves the alcohol electro-oxidation reactions. The electrochemical tests proved that the Pt-Sn/CNDs electrocatalyst exhibited high current densities and lower poisoning rates compared to the Pt/CNDs and Pt/C electrocatalysts. The Pt-Sn/CNDs electrocatalyst showed the greatest electroactivity for both methanol and ethanol electro-oxidation reactions.
| Original language | English |
|---|---|
| Pages (from-to) | 1125-1132 |
| Number of pages | 8 |
| Journal | Electroanalysis |
| Volume | 30 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - Jun 2018 |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 7 Affordable and Clean Energy
Keywords
- carbon nanodots
- electrocatalyst
- ethanol
- fuel cells
- methanol
- platinum
- tin
ASJC Scopus subject areas
- Analytical Chemistry
- Electrochemistry
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