REAL

Effect of hexagonal WO3 morphology on NH3 sensing

Takács, Máté and Dücső, Csaba and Lábadi, Zoltán and Csikósné Pap, Andrea Edit (2014) Effect of hexagonal WO3 morphology on NH3 sensing. PROCEDIA ENGINEERING, 87. pp. 1011-1014. ISSN 1877-7058

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Abstract

Tungsten oxide nano - powders were prepared by acidic precipitation from so dium tungstate solution. The alternative processes of the applied hydrothermal method resulted in different structure and morphology of hexagonal WO 3 nano - crystals. Micro - hotplates wi th gold electrodes on top to measure sensing layer conductivity were fabricated. WO 3 layers of the two morphologies were depos ited using capillary dropping technique. Sensor responses were measured up to 22 0 °C operation temperature for NH 3 diluted in synthetic air in the 10 - 100 ppm range. Test results are compared in terms of conductivity, sensitivity and response time.

Item Type: Article
Subjects: Q Science / természettudomány > QC Physics / fizika
T Technology / alkalmazott, műszaki tudományok > TA Engineering (General). Civil engineering (General) / általános mérnöki tudományok
SWORD Depositor: MTMT SWORD
Depositing User: MTMT SWORD
Date Deposited: 30 Dec 2016 10:19
Last Modified: 30 Dec 2016 10:19
URI: http://real.mtak.hu/id/eprint/44020

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