Pt catalysts supported on lignin-based carbon dots for methanol electro-oxidation
| Autor: | Yuhong Lv, Xingwei Li, Dan Pan |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Acid etching Carbonization chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Catalysis chemistry.chemical_compound Colloid and Surface Chemistry chemistry Chemical engineering Lignin Methanol 0210 nano-technology Chloroplatinic acid Carbon Deposition (law) |
| Zdroj: | Colloids and Surfaces A: Physicochemical and Engineering Aspects. 569:110-118 |
| ISSN: | 0927-7757 |
| DOI: | 10.1016/j.colsurfa.2019.02.051 |
| Popis: | Pt catalysts supported on lignin-based carbon dots are successfully prepared, and their catalytic performances for methanol electro-oxidation are investigated. Firstly, lignin-based carbon dots (Lg-CDs) are prepared by the acid etching of lignin carbonization products. Then, Pt catalysts supported on lignin-based carbon dots (Pt/Lg-CDs) are synthesized by the reduction of chloroplatinic acid in carbon dots solution. Although Pt/Lg-CDs catalysts aggregate obviously due to the deposition of Pt catalysts on the surface of Lg-CDs, the activity and stability of an optimal Pt/Lg-CDs-800 catalyst are still more outstanding than commercial Pt/C (40%Pt) and PtRu/C (30%Pt+15%Ru) catalysts for methanol electro-oxidation reaction (MOR) in acidic solutions. A large number of oxygen-containing groups on the surface of Lg-CDs-800 facilitate the uniform and stable deposition of Pt catalysts, and make the surface of more Pt catalysts expose to reaction system, thereby improving catalytic performance. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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