Preparation and room temperature methane sensing properties of platinum-decorated vanadium oxide films
Source abstract
Abstract
Abstract Room temperature methane (CH 4 ) response characteristics of vanadium oxide (VO x ) thin films loaded with platinum (Pt) nanoparticles were investigated for detection of CH 4 . The Pt/VO x thin films have been prepared on sapphire substrate by means of dc-magnetron sputtering of V metal, followed by deposition of Pt nanoparticles, and then rapid thermal annealing (RTA) in O 2 atmosphere from 450 °C to 470 °C. SEM and XRD were used to investigate the morphology and crystal structure of the films. The results showed that irregular rod-shaped particles with size on the average of 100 nanometers and the monoclinic vanadium dioxide (VO 2 ) were obtained. The property of metal to insulator transition (MIT) was a confirmation of the prepared VO 2 . The sensor annealed at 460 °C showed the largest response value which was 18.2 toward methane (CH 4 ) at room temperature with the concentration of 500 ppm. The optimal operating concentration for CH 4 detection is 1500 ppm.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Gas Sensing Nanomaterials and Sensors · Transition Metal Oxide Nanomaterials · Analytical Chemistry and Sensors
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (38)
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