Optical H2-sensing properties of ordered porous WO3 films prepared by colloidal template method

In the coming hydrogen energy era, the development of optical WO 3 hydrogen sensor with fast response speed provides a new method to detect hydrogen gas. In this work, the ordered porous WO 3 films with different pore sizes were prepared by colloidal template method, and catalyst Pt was loaded by sp...

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Bibliographic Details
Published in:Journal of materials science. Materials in electronics 2022, Vol.33 (3), p.1604-1617
Main Authors: Nie, Lewen, Guo, Xingwu, Gao, Chenjing, Wu, Xuan, Chen, Juan, Peng, Liming
Format: Article
Language:English
Subjects:
Bleaching
Characterization and Evaluation of Materials
Chemical sensors
Chemistry and Materials Science
Coloring
Glass substrates
Hydrogen
Hydrogen-based energy
Materials Science
Optical and Electronic Materials
Optical measuring instruments
Optical properties
Pore size
Reflectance
Sensors
Signal processing
Transmittance
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Summary:In the coming hydrogen energy era, the development of optical WO 3 hydrogen sensor with fast response speed provides a new method to detect hydrogen gas. In this work, the ordered porous WO 3 films with different pore sizes were prepared by colloidal template method, and catalyst Pt was loaded by sputtering method. The Pt/WO 3 films exhibited uniform and ordered porous structure with average pore diameter of 325, 772, and 1119 nm, respectively, and Pt particle size is 3 ~ 4 nm. Comparing the transmittance signal and reflectance signal during the gasochromic process to 4% H 2 gas, the change of transmittance signal is significantly (∆T 1500nm is 9.5 ~ 28.6%), while the reflectance signal is basically unchanged (∆R 1500nm  
ISSN:0957-4522
1573-482X
DOI:10.1007/s10854-022-07694-z