Abstract

Optimization of Hydrogen Sensing Performance of Pt/WO3 Gasochromic Film Fabricated by the Sol–Gel Method

Highlights

  • As a countermeasure against global warming, a clean energy system using hydrogen has been attracting much attention

  • The coloration and bleaching of films upon exposure to a certain gas is defined as gasochromism, which recently have generated considerable attention for applications to smart windows[12] and gas sensors.[9]. Tungsten trioxide using palladium or platinum as the catalyst for the dissociation of the hydrogen molecule is a typical candidate for a gasochromic material.[13]. These films are nearly transparent in air atmosphere

  • They change to a dark blue color with exposure to hydrogen gas.[13]. At room temperature, the gasochromic color reaction of a Pd- or Pt-loaded WO3 film readily proceeds when the film is exposed to hydrogen gas.[12]. The authors have been developing a hydrogen sensor device based on the sol–gel-derived platinum-supported tungsten trioxide (Pt/WO3) thin film and have demonstrated its performance as a sensor.[9]

Read more

Summary

Introduction

As a countermeasure against global warming, a clean energy system using hydrogen has been attracting much attention. The coloration and bleaching of films upon exposure to a certain gas is defined as gasochromism, which recently have generated considerable attention for applications to smart windows[12] and gas sensors.[9] Tungsten trioxide using palladium or platinum as the catalyst for the dissociation of the hydrogen molecule is a typical candidate for a gasochromic material.[13] These films are nearly transparent in air atmosphere They change to a dark blue color with exposure to hydrogen gas.[13] At room temperature, the gasochromic color reaction of a Pd- or Pt-loaded WO3 film readily proceeds when the film is exposed to hydrogen gas.[12] The authors have been developing a hydrogen sensor device based on the sol–gel-derived platinum-supported tungsten trioxide (Pt/WO3) thin film and have demonstrated its performance as a sensor.[9]. Sensing performance in response to various conditions involving hydrogen gas was assessed

Sensing Principle
Sensor Fabrication and Experimental Setup
Results and Discussion
Precursor concentration
Annealing temperature
Annealing time
Conclusions
Full Text
Published version (Free)

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call