Mg2+/Na+-doped rutile TiO2 nanofiber mats for high-speed and anti-fogged humidity sensors
writer：Hongnan Zhang, Zhenyu Li, Li Liu, Ce Wang Yen Weia, and Alan G. MacDiarmid
keywords：Electrospinning; Humidity sensor; Rutile TiO2 nanofibers; High-speed; Anti-fogged
source：期刊
specific source：TALANTA
Issue time：2010年
Mg2+ and Na+ doped rutile TiO2 nanofibers have been prepared through in situ electrospinning technique and calcination with poly(vinyl pyrrolidone) (PVP) nanofibers as sacrificed template. The as-prepared composite nanofibers are spin-coated onto a ceramic substrate with three pairs of carbon interdigital electrodes to measure its humidity sensing behaviors. The product exhibits high-speed response (2 s) and recovery (1 s) for detecting moisture. Additionally, under UV irradiation, a water contact angle (θ) of nearly 0° has been observed based on the product, providing our humidity sensor with the anti-fogged properties.