NO<inf>2</inf>gas sensing of flame-made Pt-loaded WO<inf>3</inf>thick films

Unloaded WO 3 and 0.25-1.0 wt% Pt-loaded WO 3 nanoparticles for NO 2 gas detection were synthesized by flame spray pyrolysis (FSP) and characterized via X-ray diffraction (XRD), scanning electron microscopy (SEM) and high resolution transmission electron microscopy (HRTEM). The BET surface area (SSA...

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Bibliographic Details
Main Authors: Thanittha Samerjai, Nittaya Tamaekong, Chaikarn Liewhiran, Anurat Wisitsoraat, Sukon Phanichphant
Format: Journal
Published: 2018
Online Access:https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84901038411&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/45698
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Institution: Chiang Mai University
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Summary:Unloaded WO 3 and 0.25-1.0 wt% Pt-loaded WO 3 nanoparticles for NO 2 gas detection were synthesized by flame spray pyrolysis (FSP) and characterized via X-ray diffraction (XRD), scanning electron microscopy (SEM) and high resolution transmission electron microscopy (HRTEM). The BET surface area (SSA BET ) of the nanoparticles was measured by nitrogen adsorption. The NO 2 sensing properties of the sensors based on unloaded and Pt-loaded WO 3 nanoparticles were investigated. The results showed that the gas sensing properties of the Pt-loaded WO 3 sensors were excellent to those of the unloaded one. Especially, 0.25 wt% Pt-loaded WO 3 sensor showed highest response to NO 2 than the others at low operating temperature of 150 °C. © 2013 Elsevier Inc.