Cargando…

Effect of vanadium pentoxide concentration in ZnO/V(2)O(5) nanostructured composite thin films for toluene detection

ZnO/V(2)O(5) nanocomposite thin films were synthesised by the spray pyrolysis technique with optimised deposition parameters by varying the concentration of vanadium pentoxide. The X-ray diffraction results showed that the ZnO/V(2)O(5) nanocomposite thin films have a Wurtzite-type hexagonal ZnO stru...

Descripción completa

Detalles Bibliográficos
Autores principales: Nagaraju, P., Vijayakumar, Y., Reddy, M. V. Ramana, Deshpande, U. P.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9064358/
https://www.ncbi.nlm.nih.gov/pubmed/35516390
http://dx.doi.org/10.1039/c9ra02356a
_version_ 1784699357610639360
author Nagaraju, P.
Vijayakumar, Y.
Reddy, M. V. Ramana
Deshpande, U. P.
author_facet Nagaraju, P.
Vijayakumar, Y.
Reddy, M. V. Ramana
Deshpande, U. P.
author_sort Nagaraju, P.
collection PubMed
description ZnO/V(2)O(5) nanocomposite thin films were synthesised by the spray pyrolysis technique with optimised deposition parameters by varying the concentration of vanadium pentoxide. The X-ray diffraction results showed that the ZnO/V(2)O(5) nanocomposite thin films have a Wurtzite-type hexagonal ZnO structure. We attained crystal phases at all concentrations. These results indicated that the two crystal phases of pure zinc oxide and vanadium pentoxide exist together within the composite thin film matrix. The morphology was investigated with field emission scanning electron microscopy and transmission electron microscopy (TEM). The microstructures of the deposited thin films were confirmed by Raman spectroscopy. The optical characterizations of the prepared samples were investigated by using a UV-vis spectrophotometer. X-ray photoelectron spectroscopy (XPS) was carried out to confirm the oxidation states of the elements existing on the surface of the composite thin films. The gas-sensing properties of the composite thin films towards toluene gas were studied at the temperature of 27 °C. The sensing mechanism for toluene gas was reported; the response and recovery times were determined from the transient response curve and were found to be 24 s and 28 s, respectively, for the optimised composite film.
format Online
Article
Text
id pubmed-9064358
institution National Center for Biotechnology Information
language English
publishDate 2019
publisher The Royal Society of Chemistry
record_format MEDLINE/PubMed
spelling pubmed-90643582022-05-04 Effect of vanadium pentoxide concentration in ZnO/V(2)O(5) nanostructured composite thin films for toluene detection Nagaraju, P. Vijayakumar, Y. Reddy, M. V. Ramana Deshpande, U. P. RSC Adv Chemistry ZnO/V(2)O(5) nanocomposite thin films were synthesised by the spray pyrolysis technique with optimised deposition parameters by varying the concentration of vanadium pentoxide. The X-ray diffraction results showed that the ZnO/V(2)O(5) nanocomposite thin films have a Wurtzite-type hexagonal ZnO structure. We attained crystal phases at all concentrations. These results indicated that the two crystal phases of pure zinc oxide and vanadium pentoxide exist together within the composite thin film matrix. The morphology was investigated with field emission scanning electron microscopy and transmission electron microscopy (TEM). The microstructures of the deposited thin films were confirmed by Raman spectroscopy. The optical characterizations of the prepared samples were investigated by using a UV-vis spectrophotometer. X-ray photoelectron spectroscopy (XPS) was carried out to confirm the oxidation states of the elements existing on the surface of the composite thin films. The gas-sensing properties of the composite thin films towards toluene gas were studied at the temperature of 27 °C. The sensing mechanism for toluene gas was reported; the response and recovery times were determined from the transient response curve and were found to be 24 s and 28 s, respectively, for the optimised composite film. The Royal Society of Chemistry 2019-05-28 /pmc/articles/PMC9064358/ /pubmed/35516390 http://dx.doi.org/10.1039/c9ra02356a Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by/3.0/
spellingShingle Chemistry
Nagaraju, P.
Vijayakumar, Y.
Reddy, M. V. Ramana
Deshpande, U. P.
Effect of vanadium pentoxide concentration in ZnO/V(2)O(5) nanostructured composite thin films for toluene detection
title Effect of vanadium pentoxide concentration in ZnO/V(2)O(5) nanostructured composite thin films for toluene detection
title_full Effect of vanadium pentoxide concentration in ZnO/V(2)O(5) nanostructured composite thin films for toluene detection
title_fullStr Effect of vanadium pentoxide concentration in ZnO/V(2)O(5) nanostructured composite thin films for toluene detection
title_full_unstemmed Effect of vanadium pentoxide concentration in ZnO/V(2)O(5) nanostructured composite thin films for toluene detection
title_short Effect of vanadium pentoxide concentration in ZnO/V(2)O(5) nanostructured composite thin films for toluene detection
title_sort effect of vanadium pentoxide concentration in zno/v(2)o(5) nanostructured composite thin films for toluene detection
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9064358/
https://www.ncbi.nlm.nih.gov/pubmed/35516390
http://dx.doi.org/10.1039/c9ra02356a
work_keys_str_mv AT nagarajup effectofvanadiumpentoxideconcentrationinznov2o5nanostructuredcompositethinfilmsfortoluenedetection
AT vijayakumary effectofvanadiumpentoxideconcentrationinznov2o5nanostructuredcompositethinfilmsfortoluenedetection
AT reddymvramana effectofvanadiumpentoxideconcentrationinznov2o5nanostructuredcompositethinfilmsfortoluenedetection
AT deshpandeup effectofvanadiumpentoxideconcentrationinznov2o5nanostructuredcompositethinfilmsfortoluenedetection