Surface acoustic wave sensor for formaldehyde gas detection using the multi-source spray-deposited graphene/PMMA composite film

Frontiers in Materials

Materials

Xiaoqian Wang¹  Beibei Wang²  Lingling Zhou² 

[1] Department of Applied Mathematics, Hong Kong Polytechnic University, Kowloon, Hong Kong SAR, China;Department of Environment and Food, Chuzhou Vocational and Technical College, Chuzhou, China;

关键词: formaldehyde;    sensor;    graphene;    polymethyl methacrylate;    polymer;    surface acoustic wave sensors;   

DOI  :  10.3389/fmats.2022.1025903

 received in 2022-08-23, accepted in 2022-10-03,  发布年份 2023

来源: Frontiers

【 摘 要 】

A surface acoustic wave (SAW) formaldehyde sensor based on a graphene/polymethyl methacrylate (PMMA) composite film with high sensitivity, and short response and recovery time was proposed in this study. Using a novel multi-source spray deposition method, graphene sheets were uniformly dispersed in a PMMA film to fabricate sensitive films with a three-dimensional framework structure for use in SAW devices. The formaldehyde-sensing ability was enhanced by optimizing the film thickness and operating temperature. The highest performance was achieved for a graphene/PPMA film thickness of 2.2 μm at a temperature of 120°C.

【 授权许可】

Unknown   
Copyright © 2023 Wang, Zhou and Wang.