bullet Sensors & Transducers Journal

    (ISSN: 2306-8515, e-ISSN 1726-5479)

   

    About this Journal

   Information for Authors

   Editorial Board

   Editorial Calendar

   Current Issue

   Browse Journal

S&T journal's cover

Submit Press Release

Submit White Paper

25 Top Downloaded Articles (2007-2012)

Search

Contact Us

 

 

 

 

Vol. 246, Issue 7, November 2020, pp. 71-78

 

Bullet

 

Graphene-Tin Oxide Composite Nanofibers for Low Temperature Detection
of NO2 and O3
 

1, * Sergio MASA, 2 Diego ROBÉS, 1 Esther HONTAŃÓN, 3 Jesús LOZANO, 4 Siamak EQTESADI and 2 Adolfo NARROS

1 Spanish National Research Council, Dept. of Sensors and Ultrasonic Systems, C/Serrano 144, Madrid, 28006, Spain
2 Polytechnic University of Madrid, Dept. of Chemical Industrial and Environmental Engineering, C/José Gutiérrez Abascal 2, Madrid, 28006, Spain
3 University of Extremadura, Dept. of Electrical, Electronic and Automation Engineering, Av. de Elvas s/n, Badajoz, 06006, Spain
4 Abalonyx AS, Forskningsveien 1, 0373, Oslo, Norway
* E-mail: sergio.masa@csic.es

 

Received: 28 September 2020 /Accepted: 9 November 2020 /Published: 30 November 2020

Digital Sensors and Sensor Sysstems

 

Abstract: In this work we investigate the detection performance of nanofibers of tin oxide (SnO2) towards sub-0.1 ppm nitrogen oxide (NO2) and ozone (O3) in air. It is found that SnO2 nanofibers are more sensitive to O3 than to NO2. and the optimal working temperature differs significantly between the two gases: 200 0C (NO2) and 350 0C (O3). SnO2 nanofibers loaded with reduced graphene oxide (rGO) show higher sensitivity than nanofibers of pure SnO2 at low temperatures and the optimal working temperature diminishes by around 150 0C for the two gases. The air humidity does not modify the optimum working temperature of rGO-loaded SnO2 nanofibers but it affects their sensitivity at temperatures below 150 0C. Irradiation with UV light is a promising method to activate gas desorption from rGO-loaded SnO2 nanofibers so that this material could be used in chemiresistive sensors for low temperature detection of air pollutants.

 

Keywords: Tin oxide nanofibers, Reduced graphene oxide, Electrospinning, UV irradiation, Air pollution.

 

Acrobat reader logo Click <here> or title of paper to download the full pages article in pdf format

 

 

This work is licensed under a Creative Commons 4.0 International License

 

 Creative Commons License
 

 

Read more about Gas Sensors

 

 

 

 

 


1999 - 2020 Copyright ©, International Frequency Sensor Association (IFSA) Publishing, S.L. All Rights Reserved.


Home - News - Links - Archives - Tools - Voltage-to-Frequency Converters - Standardization - Patents - Marketplace - Projects - Wish List - e-Shop - Sensor Jobs - Membership - Videos - Publishing - Site Map - Subscribe - Search

 Members Area -Sensors Portal -Training Courses - S&T Digest - For advertisers - Bookstore - Forums - Polls - Submit Press Release - Submit White Paper - Testimonies - Twitter - Facebook - LinkedIn