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

Beibei Wang; Lingling Zhou; Xiaoqian Wang

doi:10.3389/fmats.2022.1025903

Frontiers in Materials (Jan 2023)

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

Beibei Wang,
Lingling Zhou,
Xiaoqian Wang

Affiliations

Beibei Wang: Department of Environment and Food, Chuzhou Vocational and Technical College, Chuzhou, China
Lingling Zhou: Department of Environment and Food, Chuzhou Vocational and Technical College, Chuzhou, China
Xiaoqian Wang: Department of Applied Mathematics, Hong Kong Polytechnic University, Kowloon, Hong Kong SAR, China

DOI: https://doi.org/10.3389/fmats.2022.1025903
Journal volume & issue: Vol. 9

Abstract

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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.

Published in Frontiers in Materials

ISSN: 2296-8016 (Online)
Publisher: Frontiers Media S.A.
Country of publisher: Switzerland
LCC subjects: Technology
Website: https://www.frontiersin.org/journals/materials

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