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Vol. 229, Issue 1, January 2019, pp. 18-23




Nanocomposite H2O2 Vapor Sensors Made on the Base of Carbon Nanotubes Covered with SnO2 Nanoparticles

1 Zaven ADAMYAN, 1 Artak SAYUNTS, 1 Emma KHACHATURYAN, 1 Valeri ARAKELYAN, 1 Vladimir AROUTIOUNIAN and 2 Bernth JOOST

1 Yerevan State University, Research Center of Semiconductor Devices and Nanotechnologies, 1 Alex Manoogian, 0025, Yerevan, Armenia
2 Institute for Pharmaceutical Technology, Fachhochschule Nordwestschweiz, Hochschule für Life Sciences, Gründenstrasse 40, 4132 Muttenz, Switzerland
1 Tel.: +37460710311, fax: +37460710355

1 E-mail: zad@ysu.am


Received: 30 November 2018 /Accepted: 31 December 2018 /Published: 31 January 2019

Digital Sensors and Sensor Sysstems


Abstract: In this work, we present the results of studies of the nanocomposite MWCNTs/SnO2 hydrogen peroxide vapor sensors. The technology of manufacturing these sensors has been developed. As a result of the measurements of the temperature characteristics, the 100 oC optimal operating temperature of the studied sensors has been found. The response and recovery curves of the sensors were investigated in the presence of different concentrations of hydrogen peroxide vapor in the atmosphere. Sufficiently high response when low concentrations of the target gas presents in the air is observed. The linear dependence of the sensors response on the concentration of hydrogen peroxide vapor is observed in a double logarithmic scale in a certain concentration range. The minimal registered gas concentration is 1 ppm or less than.


Keywords: H2O2 vapor sensor, MWCNTs/SnO2 Nanocomposite, Carbon nanotubes, Hydrothermal synthesis, Sol-gel.


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