Colorimetric sensor for formaldehyde detection using thiol-functionalized polydiacetylene and zinc oxide nanocomposites
Issued Date
2023-01-01
Resource Type
ISSN
17426588
eISSN
17426596
Scopus ID
2-s2.0-85148031875
Journal Title
Journal of Physics: Conference Series
Volume
2431
Issue
1
Rights Holder(s)
SCOPUS
Bibliographic Citation
Journal of Physics: Conference Series Vol.2431 No.1 (2023)
Suggested Citation
Siribunbandal P., Pudwat S., Osotchan T., Jaisutti R. Colorimetric sensor for formaldehyde detection using thiol-functionalized polydiacetylene and zinc oxide nanocomposites. Journal of Physics: Conference Series Vol.2431 No.1 (2023). doi:10.1088/1742-6596/2431/1/012010 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/82249
Title
Colorimetric sensor for formaldehyde detection using thiol-functionalized polydiacetylene and zinc oxide nanocomposites
Author(s)
Author's Affiliation
Other Contributor(s)
Abstract
Formaldehyde is a toxic pollutant that harmful effect on human health. This work focus on the development of a colorimetric sensor to detect formaldehyde solution using composites of polydiacetylene (PDA), thiol-functionalized polydiacetylene (PDA-SH) and zinc oxide (ZnO) nanosheets. The as-prepared PDA/PDA-SH/ZnO vesicles exhibit a blue color, and change to a red color in the presence of formaldehyde solution. With increasing formaldehyde concentrations, the optical absorption spectra show the decreasing of absorption intensity at 640 nm wavelength, and new absorption peak occurred at 540 nm wavelength with increasing its intensity. Additionally, the PDA/PDA-SH/ZnO sensor exhibit high selective to formaldehyde and its color transition is easily observed by the naked-eye. These results indicate a possibility to use PDA/PDA-SH/ZnO sensor for on-site monitoring formaldehyde in an environment.