What is it about?

Recently, the layered vanadium pentoxide (V2O5) materials, an important transition metal oxide, have received great consideration due to their excellent physicochemical properties and inclusive applications. The properties of V2O5 include its n-type conductivity, infrared reflectance and transmittance,the room-temperature optical band gap of 2.38 eV, magnetic susceptibility, variable oxidation states, high specific capacity, high energy density, electrical resistivity, and so on.

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Why is it important?

Among various important applications, recently, V2O5 nanomaterials possess themselves as an important gas sensing material due to the presence of various oxidation states of vanadium ions which leads to the formation of interesting oxide surfaces that can control defects as well as the chemisorption for the gas sensing applications.


The room-temperature optical gas sensing method supervises the optical emission/absorption/ scattering or luminescence of a sensing material at a defined concentration of gas as a function of intensity or wavelength shift. This method possesses its own advantages over the well-established conductometric-based sensors as the latter provides a slow response and performs at comparatively high temperatures.


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This page is a summary of: Highly sensitive optical ammonia gas sensor based on Sn Doped V2O5 Nanoparticles, Materials Research Bulletin, December 2018, Elsevier, DOI: 10.1016/j.materresbull.2018.09.008.
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