Fabrication of Tin Oxide Nanoparticles for CO₂ Gas Sensing Layer

A stable and highly sensitive room-temperature liquefied petroleum gas sensor based on nano-cubes/cuboids of zinc antimonate

“…3(c), which demonstrate the sensing characteristics are 96% reproducible aer three months of fabrication of the sensor, indicating the high stability and reproducibility of the gas-sensing process. Some researchers have already investigated the CO 2 -sensing properties of nanostructured materials at high operating temperatures (above 200 C), [65][66][67][68][69][70][71] which is not convenient, as sensors operable at high temperatures require more power consumption than the sensors operable at room temperature. N. B. Tanvir et al 72 reported the investigation of CO 2 reaction with copper oxide nanoparticles, which is roomtemperature gas sensing.…”

Facile flexible sensors based on CNT-metal oxide nanocomposites for CO2 sensing

“…The deposited sensor layers were dried at 60°C for 2 h on a hot plate and then dried for 24 h in a desiccator using silica gel. Electrode Fabricated on Flexible PET Substrate [32] The adhesion of the nanomaterials to the substrate was tested by bending the flexible sensor for 100 cycles over an angle of 90 for 100 cycles followed by visual inspection. The conductivities of the electrode patterns on PET substrates were evaluated before and after the 100 bending cycles to demonstrate the mechanical flexibility of the silver electrode models generated using screen printing.…”

Nanomaterial-Based CO2 Sensors

“…Furthermore, it has been observed that high surface area and increased uniform pore size distribution make a great contribution to sensitivity as well as response time [ 36 ]. The sensor response (S.R) is measured as a function of change in resistance as shown by the equations below [ 37 , 38 ]: where R g is the resistance of the sensitive nanomaterial layer in the presence of CO 2 while R a is the resistance of the sensing layer in air. Studies have shown that the high surface to volume ratio of nanomaterials yields a quicker response time [ 39 , 40 ].…”

“…Furthermore, it has been observed that high surface area and increased uniform pore size distribution make a great contribution to sensitivity as well as response time [36]. The sensor response (S.R) is measured as a function of change in resistance as shown by the equations below [37,38]:…”