Electrospun tin oxide nanofibers for gas sensing applications

Neliza León; Anamaris Meléndez; Glendalys Figueroa; Idalia Ramos; Nicholas J. Pinto

doi:10.1117/12.722103

16 May 2007 Electrospun tin oxide nanofibers for gas sensing applications

Neliza León, Anamaris Meléndez, Glendalys Figueroa, Idalia Ramos, Nicholas J. Pinto

Proceedings Volume 6591, Nanotechnology III; 65910G (2007) https://doi.org/10.1117/12.722103
Event: Microtechnologies for the New Millennium, 2007, Maspalomas, Gran Canaria, Spain

Abstract

Tin oxide is a binary semiconductor with a wide band gap (E_g = 3.6 eV at 300 K) and has been used, mostly in the form of thin films, as the active element in gas sensing applications. As a fiber it is expected to have improved sensitivity as the surface-to-volume ratio increases. The authors fabricated undoped tin oxide and antimony-doped tin oxide nanofibers using electrospinning and metallorganic decomposition techniques. The precursor solution for the undoped fibers was based on a tin (IV) chloride and a viscous solution based on poly(ethylene oxide) (PEO). The antimonydoped precursor solution had an additional antimony trichloride solution made from isopropanol to obtain a Sb concentration of 1.5 %. To study the sensitivity of the fibers to gas exposure, both single nanofibers and nanofiber mats were electrospun onto Si/SiO₂ wafers. The changes in the nanofiber resistance with exposure and removal of methanol were measured as a function of time and gas concentration. In both configurations, the undoped nanofibers show higher sensitiviy to the presence and removal of methanol. Both the undoped and antimony-doped tin oxide single nanofibers show faster response times than the nanofiber mats. Of all the configurations tested, the antimony-doped single fiber gives more stable and faster response.

Citation Download Citation

Neliza León, Anamaris Meléndez, Glendalys Figueroa, Idalia Ramos, and Nicholas J. Pinto "Electrospun tin oxide nanofibers for gas sensing applications", Proc. SPIE 6591, Nanotechnology III, 65910G (16 May 2007); https://doi.org/10.1117/12.722103

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available