A highly sensitive quartz crystal microbalance sensor assisted with ZnO nanosheets for nerve agent detection
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Published:2021-05-25
Issue:
Volume:
Page:2151020
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ISSN:1793-6047
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Container-title:Functional Materials Letters
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language:en
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Short-container-title:Funct. Mater. Lett.
Author:
Kim Dong In1,
Jeong Rak Hyun12,
Lee Ji Won12,
Park Seong12,
Boo Jin-Hyo12
Affiliation:
1. Department of Chemistry, Sungkyunkwan University, Suwon 16419, Korea
2. Institute of Basic Science, Sungkyunkwan University, Suwon 16419, Korea
Abstract
ZnO is known as a promising material for surface acoustic wave (SAW) sensor devices because of its piezoelectric property. Recently, quartz crystal microbalances (QCMs) have been promising as a sensor platform due to their high sensitivity and ease of measurement. In particular, the alignment of ZnO nanosheets (NSs) into ordered nanoarrays is expected to improve the device sensitivity and stability due to large specific surface area, which allows the captured significant quantities of gas molecules. In this study, we fabricated a quartz crystal microbalance sensor with ZnO NSs structures using polyvinylidene fluoride as a receptor for nerve agent detection. We synthesized two-dimensional NSs by chemical bath deposition (CBD) via the potassium hydroxide etching method. CBD is an excellent method that can easily form uniform structures at low cost. We fabricated ZnO NSs modified with polyvinylidene fluoride and used it for detection of dimethyl methylphosphonate (DMMP) gas. The NSs structure indicated that, when a similar functional group material is coated, the specific surface area increased compared to the nanorods (NRs) structure. As a result, the sensitivity of the quartz crystal microbalance sensor to DMMP gas was improved.
Funder
the key technology and development program of Panxi Experimental Area
the key laboratory of application and innovation of Panxi's strategic resource
the preparation technology engineering laboratory of rare earth and vanadium titanium functional material
Publisher
World Scientific Pub Co Pte Lt
Subject
General Materials Science
Cited by
2 articles.
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