Improved performance of fiber-optic hydrogen sensor of porous Pt/WO3 based on ZIF-8

被引：14
作者：
Wang, Jingjing [1 ]
Dai, Jixiang [1 ]
Hu, Wenbin [1 ]
Zhang, Fan [1 ]
Yang, Minghong [1 ]
机构：
[1] Wuhan Univ Technol, Natl Engn Res Ctr Fiber Opt Sensing Technol & Netw, Wuhan 430070, Hubei, Peoples R China
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2024年 / 51卷
关键词：
ZIF-8; Fiber bragg grating; Hydrogen sensor; Pt-loaded WO3 coating; SENSING CHARACTERISTICS; WO3; FILMS;
D O I：
10.1016/j.ijhydene.2023.06.080
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
A novel fiber-optic hydrogen sensor including Pt/WO3 sensing material with a microporous structure is proposed and experimentally demonstrated with improved performance. The proposed Pt/WO3 sensing material is realized by introducing metal-organic frameworks (MOFs) as templates. The mesoporous structure of the ZIF-8 template improves the reactive sites of hydrogen sensitive materials with hydrogen. Hydrogen sensors were fabricated by combining the synthesized material with Fiber Bragg Gratings (FBGs) and the performance of hydrogen sensors was investigated. The experimental results show that the hydrogen sensitivity of the FBG with ZIF-8 synthesized Pt/WO3 has been increased to 0.075 pm/ppm, which is twice that without ZIF-8 synthetization. The stability and the response speed are also significantly improved. The introduction of microporous MOFs templates into Pt/WO3 sensing material will greatly accelerate the wide application of Pt/WO3-based fiber optic hydrogen sensors on hydrogen leakage detection. (c) 2023 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：909 / 916
页数：8
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