Cr2−xTixO3 (x≤0.5) as CH3COCH3 sensitive resistors

Structural and textural characterization of sol–gel prepared nanoscale titanium–chromium mixed oxides

“…In addition Cr-doped TiO 2 nanotubes have been reported with an enhanced visible photoresponse [21]. On the other hand, Ti 4+ -doped chromium oxides, Cr 2-x , Ti x O 3 where x is ≤0.5, have been studied as gas sensors [22,23]. While most of the reported literature on Cr-doped titania involves Cr loading ≤5%, only few studies involved higher Cr content [14].…”

Controlling electron injection and electron transport of dye-sensitized solar cells aided by incorporating CNTs into a Cr-doped TiO2 photoanode

“…The results show that oxygen-based functional groups were successfully introduced to the CNTs surface and also CNTs had been successfully incorporated into the TiO 2 matrix. Moreover, two peaks identified at 576.15 and 585.65 eV correspond to the Cr 2p 3/2 and Cr 2p 1/2 electrons [36], respectively, as shown in Fig. 5e.…”

Ethanol and LPG sensing characteristics of SnO2 activated Cr2O3 thick film sensor

“…The corresponding gas sensing mechanisms are now well established. By contrast, Cr 2 O 3 gas sensors with p-type semiconducting behaviour have scarcely been investigated, although a few studies have reported gas sensing characteristics of Cr 2 O 3 (Miremadi et al 1994;Dawson et al 1995;Jayaraman et al 1999;Chabanis et al 2001;Pokhrel and Nagaraja 2003;Naisbitt et al 2006;Pokhrel et al 2007;Suryawanshi et al 2008). In the present investigation, the surface of Cr 2 O 3 sensor has been activated by SnO 2 and its effect on sensor response to ethanol vapours and liquefied petroleum gas (LPG) has been studied.…”