TiO2 nanotubes were used to prepare
gas sensor and the gas sensing properties towards toluene were analyzed.
Titania nanotube arrays were fabricated via electrochemical anodization method in
glycerol electrolytes containing NH4F. The sensor fabricated from
these nanotubes exhibits a good response to toluene at room temperature with
good sensitivity. The toluene sensing properties were tested from 20 to 150 ppm
concentrations.
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