Characterization and acetone gas sensing properties of electrospun TiO2 nanorods

A novel photo-thermochemical cycle for the dissociation of CO 2 using solar energy

“…All samples have two major emission peaks at 406 nm (3.21 eV) and 467 nm (2.79 eV). The former emission peak can be ascribed to band-band PL due to the band gap (3.2 eV) of TiO 2 , which is nearly equivalent to the energy of the peak at 406 nm (3.21 eV) [30]. The latter peak is related to excitonic PL, which can be attributed to the radiation generated by the transition of excitons from the V O donor level to the higher VB [31,32].…”

Fabrication of Nanosized Island-Like CdO Crystallites-Decorated TiO2 Rod Nanocomposites via a Combinational Methodology and Their Low-Concentration NO2 Gas-Sensing Behavior

“…Several studies have investigated methods to fabricate TiO 2 -based one-dimensional structures with various morphologies for application as gas-sensing devices. For example, the high acetone gas-sensing response of electrospinning-synthesized TiO 2 nanorods was investigated at 500 °C [ 5 ]. TiO 2 nanotubes synthesized through anodization of Ti foil at room temperature were used to detect H 2 gas [ 6 ].…”

Nanostructured TiO2-based gas sensors with enhanced sensitivity to reducing gases

“…Different ways in which TiO 2 can be prepared include sol–gel process [18–20], flame spray synthesis [21], hydrothermal process [22], electrospinning methods [23], chemical and physical vapor deposition [24–25], and thermal, chemical, and electrochemical (anodization) oxidation [26–29]. Thermal and chemical oxidation seem to be the easiest to perform, the least expensive, and have interlaboratory reproducibility as an additional advantage.…”

“…Thermal and chemical oxidation seem to be the easiest to perform, the least expensive, and have interlaboratory reproducibility as an additional advantage. TiO 2 is obtained mainly in form of thin film, however, recently more sophisticated nanostructures such as nanowires, nanorods, nanoplates have been exploited [23,26,30–31]. The recourse of such a direction of research results from microstructural aspects such as grain size and surface morphology, which are among the most important factors influencing the sensitivity of a gas sensor.…”