RT Journal Article
T1 Effect of the synthesis method on the properties of lithium doped graphene oxide composites with tin oxide nanoparticles: Towards white luminescence
A1 Prado Hurtado, Félix del
A1 Taeño González, María
A1 Maestre Varea, David
A1 Ramírez Castellanos, Julio
A1 González Calbet, José María
A1 Cremades Rodríguez, Ana Isabel
AB 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 SnO_2 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 sp^2 domain sizes, incorporation of lithium and enhancement of the luminescence, have been analyzed in this work by means of xray 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.
PB Pergamon Elsevier Science
SN 0022-3697
YR 2019
FD 2019-06
LK https://hdl.handle.net/20.500.14352/13357
UL https://hdl.handle.net/20.500.14352/13357
LA eng
NO ©2019 Pergamon Elsevier Science This work was supported by MINECO/FEDER/M-ERA.NET COFUND (Project MAT2015-65274-R, Project MAT2016-81720-REDC, and Project PCIN-2017-106). The authors are grateful to Matteo Amati (Elettra Sincrotrone, Trieste (Italy)) for his useful advices on the XPS measurements at the ESCA microscopy lines and Dr. J. Bartolome by his help with the chromaticity diagrams. The FPI grant holder, M.T., thanks the financial support from MINECO.
NO Ministerio de Economía y Competitividad (MINECO) / FEDER / ERA.NET
DS Docta Complutense
RD 18 ago 2024