Effect of the synthesis method on the properties of lithium doped graphene oxide composites with tin oxide nanoparticles: Towards white luminescence
| Autor: | Félix del Prado, David Maestre, Ana Cremades, José M. González-Calbet, María Taeño, Julio Ramírez-Castellanos |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Photoluminescence
Materials science Graphene Oxide Nanoparticle 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Tin oxide 01 natural sciences 0104 chemical sciences law.invention chemistry.chemical_compound X-ray photoelectron spectroscopy chemistry law General Materials Science Composite material 0210 nano-technology High-resolution transmission electron microscopy Luminescence |
| Zdroj: | Journal of Physics and Chemistry of Solids. 129:133-139 |
| ISSN: | 0022-3697 |
| Popis: | Graphene oxide (GO) based composites functionalized with nanoparticles are emerging as potential candidates for multifunctional devices. As the synthesis route can strongly influence the way in which the nanoparticles are anchored to GO and the resulting properties, different routes have been employed and evaluated in this work for the preparation of composites formed by GO and undoped or Li doped SnO2 nanoparticles. Promotion of synergetic effects, as well as changes in the structural and luminescent properties of the composites have been also analyzed. In comparison with GO, composite samples synthesized in this work involve enhanced luminescence while retaining nearly white emission, which could lead to wider applicability of GO based composites in free standing and emitting and sensing devices. Aspects, such as GO reduction, stabilization of different Sn-based oxides, variation in the concentration of oxygen related functional groups, changes in the sp2 domain sizes, incorporation of lithium and enhancement of the luminescence, have been analyzed in this work by means of x-ray diffraction (XRD), high resolution transmission electron microscopy (HRTEM), energy dispersive x-ray spectroscopy (EDS), Raman spectroscopy, x-ray photoelectron spectroscopy (XPS) and photoluminescence (PL) characterizations. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect