Pd loaded spider-web TiO2 nanowires: Fabrication, characterization and gas sensing properties

Pd loaded spider-web TiO2 nanowires were fabricated using Ti foil to sense volatile organic compound (VOC). The spider-web TiO2 nanowires on Ti foil were synthesized in an aqueous 1M sodium hydroxide (NaOH) solution at 220°C by hydrothermal method. In order to load palladium the spider-web TiO2 nano...

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Bibliographic Details
Published in:Sensors and actuators. B, Chemical Chemical, 2014-08, Vol.199, p.424-432
Main Authors: Şennik, Erdem, Soysal, Uğur, Öztürk, Zafer Ziya
Format: Article
Language:English
Subjects:
Gas sensor
Hydrothermal method
Metal oxide nanowire
Pd loaded
TiO2
VOC
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Summary:Pd loaded spider-web TiO2 nanowires were fabricated using Ti foil to sense volatile organic compound (VOC). The spider-web TiO2 nanowires on Ti foil were synthesized in an aqueous 1M sodium hydroxide (NaOH) solution at 220°C by hydrothermal method. In order to load palladium the spider-web TiO2 nanowires and palladium (II) acetate [Pd(OAc)2] powder were placed at a certain distance in a quartz boat inside a furnace for a thermal process. The samples were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM) and X-ray photoelectron spectroscopy (XPS) techniques. VOC gas sensing properties of the spider-web nanowires have been investigated in the concentration range of 500–5000ppm at 200°C. The results show that the sensor response for Pd loaded spider-web TiO2 nanowires increase depending on the increments of the VOC concentration. The maximum sensor response was obtained for isopropyl alcohol.
ISSN:0925-4005
1873-3077
DOI:10.1016/j.snb.2014.03.052