Green and facile microwave assisted synthesis of (metal-free) N-doped carbon quantum dots for catalytic applications
| Autor: | Jovana Prekodravac, Matej Mičušík, Bojana Vasiljević, Zoran Marković, Duška Kleut, Biljana M. Todorović Marković, Dragana Jovanovic, Danica Bajuk Bogdanović, Martin Danko, Zdenko Špitalský |
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| Rok vydání: | 2019 |
| Předmět: |
Green chemistry
Materials science Rose bengal conjugation Environmental pollution 02 engineering and technology 7. Clean energy 01 natural sciences Catalysis chemistry.chemical_compound Microwave synthesis 0103 physical sciences Materials Chemistry Rose bengal 010302 applied physics Visible light photo activity Process Chemistry and Technology 021001 nanoscience & nanotechnology Surfaces Coatings and Films Electronic Optical and Magnetic Materials Nitrogen doped CQDs Chemical engineering chemistry 13. Climate action Quantum dot Ceramics and Composites Photocatalysis Degradation (geology) 0210 nano-technology Microwave |
| Zdroj: | Ceramics International |
| ISSN: | 0272-8842 |
| Popis: | Industrialization today leads to a significant increase in the environmental pollution, with number of phenols, pesticides, paints, solvents and other organic pollutants with potentially carcinogenic effect in natural resources. Investigation of some new semiconductor materials and their photocatalytic properties for removal of pollutants is a challenging work. However, limited usage of photoactive materials still requires the testing of new materials with photoactive properties. The current work introduces the swift and easy approach for synthesis of (metal–free) N–doped carbon quantum dots in water using microwave reactor. Synthesis was performed from glucose water solution by heating in microwave reactor for only 1 min, at low temperature and applied microwave power. The synthesized N–doped carbon quantum dots show remarkable photocatalytic activity for removal of toxic organic dye (Rose Bengal) under visible light irradiation. Almost 93% of the dye degradation is achieved after only 30 min of radiation. The uninspected result, that the pH of the medium has a significant effect on the performance of the synthesized material in the presence of organic dye, indicates that dots show dual behavior. In the neutral and basic conditions, they have the ability to degrade organic dye, whereas, by shifting the medium pH into acidic medium, they form a stable conjugate with Rose Bengal. © 2019 Elsevier Ltd and Techna Group S.r.l. |
| Databáze: | OpenAIRE |
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