PROCEDURE FOR FABRICATION OF WOLFRAM DUSULFUIRE (WS₂) NANOPAUSES AS SENSORS FOR MEASURING NITROGEN DIOXIDE (NO₂) AT ROOM TEMPERATURE

Abstract

The invention relates to a “Process for fabricating tungsten disulfide (WS2) nanosheets for use as sensors to measure nitrogen dioxide (NO2) at room temperature” based on the liquid-phase separation (LPE) method using WS2 powder material, followed by ultrasonic vibration of the probe and centrifugal washing, coating the WS2 nanosheets onto a Cr / Pt electrode and annealing in a vacuum to fabricate the WS2 nanomaterial sensor. The gas-sensitive material is WS2 nanosheets directly coated onto a comb-shaped electrode. The sensor can measure NO2 and several other gases such as H2S, H2, SO2, and CO at room temperature. This forms the basis for developing generations of gas sensors based on WS2 nanosheet materials for environmental monitoring applications and enhancing their practical applications.

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