Abstract
Gold nanoparticles functionalized with resorcinol moieties have been prepared and used for detecting formaldehyde both in solution and gas phases. The detection mechanism is based on the color change of the probe upon the aggregation of the nanoparticles induced by the polymerization of the resorcinol moieties in the presence of formaldehyde. A limit of detection of 0.5 ppm in solution has been determined. The probe can be deployed for the detection of formaldehyde emissions from composite wood boards.
Highlights
Formaldehyde is a pollutant gas emitted from different building materials and domestic products
It is a colorless compound with a strong smell that is widely used in the fabrication of pressed-wood boards, certain insulating materials, and paper product coatings
High-performance liquid chromatography is preferred when formaldehyde is detected in aqueous media [7,8]
Summary
Formaldehyde is a pollutant gas emitted from different building materials and domestic products. Due to the widespread use of formaldehyde, its toxicity, and volatility, the development of reliable sensors for its detection is a very active research field. Detection of formaldehyde in air samples is usually carried out using spectrometric methods [6].
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