NDLI: Nanostructured TiO$_{2}$-based mixed metal oxides prepared using microemulsions for carbon monoxide detection

Content Provider	Springer Nature Link
Author	Anukunprasert, Theera Saiwan, Chintana Bartolomeo, Elisabetta Traversa, Enrico
Copyright Year	2007
Abstract	Nanostructured powders of Nb-doped TiO$_{2}$ (TN) and SnO$_{2}$ mixed with Nb-doped TiO$_{2}$ in two different atomic ratios—10 to 1 (TSN 101) and 1 to 1 (TSN 11)—were synthesized using the reverse micelle microemulsion of a nonionic surfactant (brine solution/1-hexanol/Triton X-100/cyclohexane). The powders were characterized by transmission electron microscopy (TEM) and X-ray diffraction (XRD). Thick films were fabricated for gas sensors and characterized by XRD analysis and field emission scanning electron microscopy (FE-SEM). The effects of the film morphology and firing temperature in the range 650–850 °C on CO sensitivity were studied. The best gas response, expressed as the ratio between the resistance in air and the resistance under gas exposure (R $_{air}$/R $_{gas}$), was measured for TSN 11 at 11 for 1,000 ppm CO exposure. All types of sensors showed good thermal stability. The electrochemical impedance spectroscopy (EIS) measurements were performed in different gas atmospheres (air, O$_{2}$, CO and NO$_{2}$) to better understand the electrical properties of the nanostructured mixed metal oxides.
Starting Page	295
Ending Page	303
Page Count	9
File Format	PDF
ISSN	13853449
Journal	Journal of Electroceramics
Volume Number	18
Issue Number	3-4
e-ISSN	15738663
Language	English
Publisher	Springer US
Publisher Date	2007-06-01
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Nanostructured mixed metal oxides Microemulsions Carbon monoxide Gas sensor Crystallography Electrochemistry Characterization and Evaluation of Materials Ceramics, Glass, Composites, Natural Methods Optical and Electronic Materials
Content Type	Text
Resource Type	Article
Subject	Ceramics and Composites Materials Chemistry Mechanics of Materials Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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