Heterogeneous catalyst for the veratryl alcohol oxidation based on gold nanoparticles decorated with graphene quantum dots supported on silicon dioxide
| Autor: | Yaoyao Yang, Tao Hai, Yuqi Cao, Xinyi Lu, Ruiqing Wu, Ziyun Gong |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
chemistry.chemical_classification
Nanocomposite Silicon dioxide Graphene Graphene quantum dots General Engineering Energy Engineering and Power Technology Catalytic oxidation Heterogeneous catalysis Aldehyde law.invention Catalysis chemistry.chemical_compound Adsorption chemistry Chemical engineering law Colloidal gold lcsh:TA401-492 Hydrothermal synthesis lcsh:Materials of engineering and construction. Mechanics of materials Au nanoparticles |
| Zdroj: | Results in Materials, Vol 6, Iss, Pp 100062-(2020) |
| Popis: | The oxidation of veratryl alcohol can produce veratryl aldehyde or veratryl acid, which are industrially important chemicals widely used in the food and pharmaceutical industries. Gold nanoparticles (AuNPs) functionalized with graphene quantum dots (GQDs) have shown high activity and selectivity as a catalyst for veratryl alcohol oxidation. However, the AuNP/GQD catalyst has excellent dispersibility in aqueous solutions, which makes it difficult to recycle all the catalyst after reaction. In this work, AuNP/GQD catalysts were further immobilized onto a silicon dioxide support by different methods, including physical adsorption, one-pot synthesis, and hydrothermal synthesis to produce AuNP/GQD/SiO2 composites. Extensive characterization of the microstructure, crystallinity, chemical structure, and catalytic performance of the catalysts was performed to evaluate the processing methods. It was demonstrated that the obtained composites are suitable heterogeneous catalysts for the oxidation of veratryl alcohol. |
| Databáze: | OpenAIRE |
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