Effect of Silver Promoter on the H2 Gasochromic Recovery Behavior of Pt-Decorated WO3 Nanowires
Year: 2026
Type: article
Abstract: The hydrogen gasochromic phenomenon offers a new strategy for real-time sensing technologies for hydrogen leakage to ensure hydrogen safety. However, the limited recovery kinetics impede the cycling and further practical applications. Herein, we designed a series of PtAg-decorated WO3 nanowires via the chemical reduction deposition method, which could exhibit obvious and reversible color changes for H2 detection. With the assistance of Ag, the oxygen adsorption and dissociation were accelerated; then, the sample could exhibit a constant rapid recovery rate. The crystalline Pt-Ag/WO3 nanowires could attain a 50% recovery degree within 52 s, and the recovery time of the Pt-Ag/WO3 sample was reduced to one fifth that of Pt/WO3. This study provides a fundamental solution to the challenge of slow recovery kinetics in H2 gasochromic crystalline materials.
DOI: 10.3390/ijms27020833
Authors: Dandan Liu, Ziheng Geng, Aiyan Han, Rongjiao Che, Ping Yu, Huan Liu, Yunqi Liu
Language: English
Subfield: Polymers and Plastics
Field: Materials Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $3,499
Awards: G3226469091, G7943675765
OpenAlex ID: W7123573224