Influence of the V2O5 content of the catalyst layer of a non-Nernstian NH3 sensor

Antiferromagnetism induced by oxygen vacancies in V2O5polycrystals synthesized by the Pechini method

“…Vanadium pentoxide (V 2 O 5 ), in orthorhombic structure, has been widely used in a variety of scientific and technological applications due to its highly anisotropic electrical and optical properties making it a promising compound for applications such as high-capacity lithium batteries [1,2], chemical sensors [3][4][5] and solar cells [3,4]. The most exploited morphologies are polycrystals [6], nanofibers [5,7], nanorods [8,9], nanotubes [10,11] and thin films [12][13][14][15].…”

V2O5 Thin Films as Nitrogen Dioxide Sensors †

“…As can be seen in the Table 1, some authors reported that their sensors based on nanostructured vanadium pentoxide or its composite show sensitivity at room temperature [29,31,36,41,48,49]. Moreover, as per published results [40], the sensor selectivity may be substantially improved for sensors composed of oriented nanoparticles.…”

“…Table 1 [27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49] includes examples of conductometric sensors of various gases, except of NO 2 , with V 2 O 5 sensing material or V 2 O 5 as addition to other material such as SnO 2 [33,38], TiO 2 [40,50] and other [29,37,51,52,53,54]. On the other hand, Table 2 summarizes V 2 O 5 -based NO 2 sensors.…”

Fine-tuning of gas sensitivity by modification of nano-crystalline WO3 layer morphology

“…Sensitivity is defined as (R air − R gas )/R air where R denotes the measured resistance of the gas sensing layer. Although WO 3 is known to exhibit much higher sensitivity for NO 2 , the response for ammonia has also been investigated by several authors [35][36][37]. Moreover, the limited sensitivity does not bottleneck the investigation of the size and morphology effect.…”