NAGIOS: RODERIC FUNCIONANDO

Influence of annealing conditions on the photoelectrocatalytic performance of WO3 nanostructures

Repositori DSpace/Manakin

Valencià Castellano

Inici
Investigació
e-prints
23 - Química
Visualitza element

IMPORTANT: Aquest repositori està en una versió antiga des del 3/12/2023. La nova instal.lació está en https://roderic.uv.es/

Influence of annealing conditions on the photoelectrocatalytic performance of WO3 nanostructures

Mostra el registre parcial de l'element

dc.contributor.author	Roselló Márquez, Gemma
dc.contributor.author	Fernández Domene, Ramón Manuel
dc.contributor.author	Sánchez Tovar, Rita
dc.contributor.author	Garcia-Anton, Jose
dc.date.accessioned	2020-12-29T11:48:21Z
dc.date.available	2020-12-29T11:48:21Z
dc.date.issued	2020
dc.identifier.citation	Roselló Márquez, Gemma Fernández Domene, Ramón Manuel Sánchez Tovar, Rita Garcia-Anton, Jose 2020 Influence of annealing conditions on the photoelectrocatalytic performance of WO3 nanostructures Separation and Purification Technology 238 116417
dc.identifier.uri	https://hdl.handle.net/10550/76830
dc.description.abstract	Nanostructured WO3 photoanodes have been synthesized by electrochemical anodization under controlled hydrodynamic conditions in acidic media in the presence of 0.05 M H2O2. Subsequently, samples have been subjected to a thermal treatment (annealing) at different temperatures (400 °C, 500 °C and 600 °C) and under different gaseous atmospheres (air, N2, Ar). The influence of these annealing conditions on the morphology, crystallinity, photoelectrochemical behavior and dopant chemistry of the different photoanodes has been investigated through Electronic Microscopy, Raman Spectroscopy, Photoelectrochemical Impedance Spectroscopy and Mott-Schottky analysis. In general, higher annealing temperatures resulted in samples with higher degrees of crystallinity, which in turn favored the transport of electron-hole pairs through the semiconducting photoanodes. Besides, an increase in annealing temperature implied higher densities of donor species within the samples structure, which can explain the observed enhancement in charge transfer. Annealing temperature was observed to have a more marked impact on the photoelectrocatalytic performance of WO3 nanostructures than the gaseous atmosphere.
dc.language.iso	eng
dc.relation.ispartof	Separation and Purification Technology, 2020, vol. 238, p. 116417
dc.subject	Nanoestructures
dc.subject	Electroquímica
dc.title	Influence of annealing conditions on the photoelectrocatalytic performance of WO3 nanostructures
dc.type	journal article	es_ES
dc.date.updated	2020-12-29T11:48:21Z
dc.identifier.doi	10.1016/j.seppur.2019.116417
dc.identifier.idgrec	138187
dc.rights.accessRights	open access	es_ES