Effect of Ag clusters doping on the photoluminescence, photocatalysis and magnetic properties of ZnO nanorods prepared by facile microwave-assisted hydrothermal synthesis
| Autor: | R. P. A. Souza, Felipe Bohn, Carlos A. Paskocimas, F. M. M. Borges, José Heriberto Oliveira do Nascimento, Fabiana V. Motta, Máximo Siu Li, Mauricio R. D. Bomio, Elson Longo, Marcio Assolin Correa |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Photoluminescence Scanning electron microscope NANOTECNOLOGIA Inorganic chemistry 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Atomic and Molecular Physics and Optics 0104 chemical sciences Electronic Optical and Magnetic Materials Field electron emission Chemical engineering Transmission electron microscopy Photocatalysis Hydrothermal synthesis Nanorod Electrical and Electronic Engineering 0210 nano-technology Wurtzite crystal structure |
| Zdroj: | Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP |
| ISSN: | 1573-482X 0957-4522 |
| DOI: | 10.1007/s10854-017-6890-x |
| Popis: | We report a chemical route to synthesize stabilized ZnO:Ag nanoparticles (NPs) combined with nanosized metallic Ag using microwave-assisted hydrothermal synthesis. We employ X-ray diffraction (XRD), field emission guns scanning electron microscopy, transmission electron microscopy, spectrophotometry, photodegradation, photoluminescence and magnetic characterizations to investigate the structural, morphological, photocatalytic and magnetic properties of ZnO:Ag samples with different Ag concentrations. We verify through XRD results the standard wurtzite crystalline phases and face-centered cubic for metallic Ag NPs. Moreover, we confirm through spectrophotometry the photocatalysis in the samples. The Ag clusters doping the pure material causes the shift from green to yellow-red, which are lower energy wavelengths, thus corroborating changes of its electrical properties due to the decreased gap. We interpret the magnetic properties in terms of the nanosizing and similar effects. Under these conditions, we show the improvement of the photocatalytic and magnetic properties of ZnO NPs. |
| Databáze: | OpenAIRE |
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