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http://hdl.handle.net/10773/20759
Título: | Novel nanosynthesis of In2O3 and its application as a resistive gas sensor for sevoflurane anesthetic |
Autor: | Karmaoui, M. Leonardi, S. G. Tobaldi, D. M. Donato, N. Pullar, R. C. Seabra, M. P. Labrincha, J. A. Neri, G. |
Palavras-chave: | METAL-OXIDE NANOPARTICLES AGENT SEVOFLURANE DIFLUOROMETHYL ETHER SENSING PROPERTIES NITROUS-OXIDE OXYGEN ISOFLURANE NANOSTRUCTURES NANOCRYSTALS CRYSTALLINE |
Data: | 2015 |
Editora: | ROYAL SOC CHEMISTRY |
Resumo: | A novel non-aqueous sol-gel route for synthesizing pure indium oxide (In2O3) nanoparticles (NPs) using indium acetylacetonate and n-butylamine as the reactive solvent, under solvothermal conditions, is herein proposed. The samples were characterized by an advanced X-ray method, whole powder pattern modeling (WPPM) and high-resolution transmission electron microscopy (HR-TEM), showing the exclusive presence of pure In2O3. Diffuse reflectance spectroscopy (DRS) was used to determine the optical band gap (E-g) of the sample. Moreover, these investigations also revealed that the In2O3 nanoparticles are quasi-spherical in shape, with a diameter of around 7 nm as prepared and 9.5 nm after thermal treatment at 250 degrees C. In2O3 NPs worked as highly sensitive sensing interfaces to provide resistance changes during exposure to sevoflurane, a volatile anesthetic agent used in surgical wards. The developed sensor demonstrated a good response and fast response/recovery time towards very low concentrations of sevoflurane in air, suggesting a very attractive application as a real-time monitoring analyzer in a hospital environment. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/20759 |
DOI: | 10.1039/c4tb01177e |
ISSN: | 2050-750X |
Versão do Editor: | 10.1039/c4tb01177e |
Aparece nas coleções: | CICECO - Artigos |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Novel nanosynthesis of In2O3 and its application as a resistive gas sensor for sevoflurane anesthetic_10.1039c4tb01177e.pdf | 748.12 kB | Adobe PDF |
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