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Sensors 2014, 14(12), 24231-24243; doi:10.3390/s141224231

Nanocrystalline Tin Oxide Nanofibers Deposited by a Novel Focused Electrospinning Method. Application to the Detection of TATP Precursors

1
GRIDSEN, Instituto de Tecnologías Físicas y de la Información (ITEFI-CSIC), Madrid 28006, Spain
2
Fotónica de Microondas, CCADET, Universidad Nacional Autónoma de México (UNAM), 04510 DF, Mexico
3
Instituto de Microelectrónica de Barcelona (IMB-CNM-CSIC), Barcelona 08193, Spain
*
Author to whom correspondence should be addressed.
Received: 21 October 2014 / Revised: 1 December 2014 / Accepted: 10 December 2014 / Published: 16 December 2014
(This article belongs to the Section Chemical Sensors)
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Abstract

A new method of depositing tin dioxide nanofibers in order to develop chemical sensors is presented. It involves an electrospinning process with in-plane electrostatic focusing over micromechanized substrates. It is a fast and reproducible method. After an annealing process, which can be performed by the substrate heaters, it is observed that the fibers are intertwined forming porous networks that are randomly distributed on the substrate. The fiber diameters oscillate from 100 nm to 200 nm and fiber lengths reach several tens of microns. Each fiber has a polycrystalline structure with multiple nano-grains. The sensors have been tested for the detection of acetone and hydrogen peroxide (precursors of the explosive triacetone triperoxide, TATP) in air in the ppm range. High and fast responses to these gases have been obtained. View Full-Text
Keywords: electrospinning; tin oxide; nanofiber sensors; TATP detection electrospinning; tin oxide; nanofiber sensors; TATP detection
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Santos, J.P.; Fernández, M.J.; Fontecha, J.L.; Matatagui, D.; Sayago, I.; Horrillo, M.C.; Gracia, I. Nanocrystalline Tin Oxide Nanofibers Deposited by a Novel Focused Electrospinning Method. Application to the Detection of TATP Precursors. Sensors 2014, 14, 24231-24243.

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