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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...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2019
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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 |
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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 |
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