Applications of Sensing Material on Quartz Crystal Microbalance in Detection of Volatile Organic Compounds: A Review.

Nur Athirah Awatif Abdul Rahman, Ammar Zakaria, Nora Jullok, Akmal Hadi Ma'Radzi

ABSTRACT

Objective - Studies on the application of quartz crystal microbalance (QCM) in a gas sensor field have been immensely nurtured over decades in the determination of volatile organic compounds (VOC) at a lower concentration level. In order to increase the selectivity and sensitivity of QCM in VOC detection, an appropriate material film was layered over the quartz crystal surface. Thus, the purpose of this study was to look at the correlation of material film coated on the sensor in detecting VOC.

Methodology/Technique - Literature study was performed using two research database which is ScienceDirect and IEEE System Journal. Keywords used to generate article of interest in both platforms were "quartz crystal microbalance" and "volatile organic compound". Only published articles that consists of two keywords either mentioned in the title, keywords, or abstract, along with sensor that was coated with the sensing material were selected to be reviewed.

Findings - Sensing materials identified as a coating layer for quartz crystal microbalance was an ionic liquid, polymer-based, macromolecule, nanoparticle, nanocomposite, organic compounds and inorganic compounds. Each sensing material had great sensitivity towards a specific group of volatile compounds.

Novelty - In this review, information related to which sensing material was suitable as QCM coating elements for high identification of which types of volatile compounds were discussed.

Type of Paper: Review

Keywords: Inorganic compound; Ionic liquid; Macromolecules; Nanocomposite; Nanoparticle; Organic compound; Polymer based; Quartz crystal microbalance; Sensing material; Volatile organic compound.

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