Nanostructured Fe doped ZnO: TiO2 for gas sensors applications

Author

Somacescu, Simona ; Dinescu, Adrian ; Osiceanu, P.

Author_Institution

Nat. Inst. for R&D in Microtechnologies, Bucharest, Romania

Volume

2

fYear

2012

fDate

15-17 Oct. 2012

Firstpage

337

Lastpage

340

Abstract

Nanostructured Fe doped ZnO: TiO₂ with crystalline framework and porous structure were successfully synthesized by hydrothermal route, using ionic and non-ionic surfactants as templates. The structure morphology, surface chemistry and sensing properties were investigated. The results highlighted that ZnO: TiO₂ materials show a wurtzite type structure with TiO₂ anatase phase in higher proportion, while a minor phase TiO₂ rutile was observed for the materials containing Fe. Surface chemistry revealed the elements quantitatively detected on the surface and their chemical environment. Nanostructured Fe doped ZnO: TiO₂ materials were sensitive to toxic gases as CO and NO₂ at 300 ^oC and to a small gas concentration in the range of ~3ppm.

Keywords

II-VI semiconductors; gas sensors; iron; nanofabrication; nanostructured materials; porous semiconductors; surface chemistry; titanium compounds; wide band gap semiconductors; zinc compounds; CO; NO₂; ZnO:TiO₂,Fe; anatase phase; crystalline structure; gas sensors; hydrothermal method; morphology; nanostructured sample; nonionic surfactants; porous structure; rutile phase; sensing properties; surface chemistry; temperature 300 degC; Chemistry; Gases; Iron; Morphology; Surface morphology; Zinc oxide; Fe doped ZnO: TiO2; gas sensor; nanostructures; surfactants;

fLanguage

English

Publisher

ieee

Conference_Titel

Semiconductor Conference (CAS), 2012 International

Conference_Location

Sinaia

ISSN

1545-857X

Print_ISBN

978-1-4673-0737-6

Type

conf

DOI

10.1109/SMICND.2012.6400768

Filename

6400768