One-Pot Microwave-Assisted Synthesis of Graphene-Supported PtCoM (M = Mn, Ru, Mo) Catalysts for Low-Temperature Fuel Cells
| Autor: | Antanas Nacys, Daina Upskuvienė, Jūratė Vaičiūnienė, Teofilius Kilmonis, Raminta Stagniūnaitė, Aldona Balčiūnaitė, Virginija Kepenienė, Jolita Jablonskienė, Eugenijus Norkus, Loreta Tamašauskaitė-Tamašiūnaitė, Martynas Skapas |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
oxidation TP1-1185 Electrochemistry Catalysis transition metals law.invention chemistry.chemical_compound Transition metal law Physical and Theoretical Chemistry microwave irradiation QD1-999 methanol Graphene Chemical technology graphene Chemistry chemistry Transmission electron microscopy Methanol Cyclic voltammetry Current density Nuclear chemistry |
| Zdroj: | Catalysts; Volume 11; Issue 12; Pages: 1431 Catalysts, Vol 11, Iss 1431, p 1431 (2021) |
| ISSN: | 2073-4344 |
| DOI: | 10.3390/catal11121431 |
| Popis: | In this study, one-pot microwave-assisted synthesis was used to fabricate the graphene (GR)-supported PtCoM catalysts where M = Mn, Ru, and Mo. The catalysts with the molar ratios of metals Pt:Co:Mn, Pt:Co:Ru, and Pt:Co:Mo equal to 1:3:1, 1:2:2, and 7:2:1, respectively, were prepared. Catalysts were characterized using Transmission Electron Microscopy (TEM). The electrocatalytic activity of the GR-supported PtCoMn, PtCoRu, and PtCoMo catalysts was evaluated toward methanol oxidation in an alkaline medium employing cyclic voltammetry and chrono-techniques. The most efficient electrochemical characteristics demonstrated the PtCoMn/GR catalyst with a current density value of 144.5 mA cm−2, which was up to 4.8 times higher than that at the PtCoRu(1:2:2)/GR, PtCoMo(7:2:1)/GR, and bare Pt/GR catalysts. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
| Nepřihlášeným uživatelům se plný text nezobrazuje | K zobrazení výsledku je třeba se přihlásit. |