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Influence of thermal treatment on PtAu/C catalyst for glycerol electrooxidation in alkaline media |
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| รหัสดีโอไอ | |
| Title | Influence of thermal treatment on PtAu/C catalyst for glycerol electrooxidation in alkaline media |
| Creator | 1. Panisa Lertthahan 2. Apichai Therdthianwong 3. Supaporn Therdthianwong |
| Publisher | Joint Graduate School of Energy and Environment |
| Publication Year | 2557 |
| Keyword | glycerol electrooxidation, thermal treatment, polyvinyl alcohol (PVA) protection, PtAu/C, AAEMFC |
| Abstract | The Au-based catalysts were prepared by using polyvinyl alcohol protected method. The physical and electrochemical properties of the as-prepared catalysts were measured. The catalytic activity and stability of the PtAu/C catalysts toward glycerol electrooxidation were measured using cyclic voltammetric and chronoamperometric methods. To promote the alloy formation between Au and Pt, heat treatment of the catalyst was performed with PtAu/C in a temperature range of 300-700?C at a heating rate of 10?C/min of under nitrogen atmosphere. The alloying degree of the heat-treated catalyst increased with increasing heat treatment temperature. Consequently, the significant enhancement of the onset potential of glycerol oxidation was achieved for the catalyst treated at 700?C. Moreover, The H-300 PtAu/C catalyst exhibited the lowest decay rate. However, the heat treatment also promoted sintering phenomenon of the metal particles leading to the decrease of the maximum current density. Therefore, the untreated PtAu/C showed higher performance than the heat-treated one. |
| ISBN | 978-616-92228-1-1 |
