Publication: Simple Portable Voltammetric Sensor Using Anodized Screen- Printed Graphene Electrode for the Quantitative Analysis of p-Hydroxybenzoic Acid in Cosmetics
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Issued Date
2022
Resource Type
Language
eng
File Type
application/pdf
ISSN
24701343
Rights Holder(s)
Scopus
Bibliographic Citation
International Journal of Dentistry. Vol 2022, No. (2022), p.-
Suggested Citation
Charoenkitamorn K., Siangproh W., Chailapakul O., Oyama M., Chaneam S. Simple Portable Voltammetric Sensor Using Anodized Screen- Printed Graphene Electrode for the Quantitative Analysis of p-Hydroxybenzoic Acid in Cosmetics. International Journal of Dentistry. Vol 2022, No. (2022), p.-. doi:10.1021/acsomega.2c01434 Retrieved from: https://hdl.handle.net/20.500.14740/9979
Abstract
Screen-printed graphene electrodes (SPGEs) have become a potential option in electrochemical applications because of their outstanding properties and disposable approach to miniaturize the electrodes for onsite analysis. Herein, the detection of para-hydroxybenzoic acid (PHBA) in cosmetics using the anodized SPGE has been pioneered and reported. The simple anodization of the SPGE surface was operated by anodic pretreatment at a constant potential on SPGE. The surface morphologies and electrochemical behaviors of anodized SPGEs in different anodization electrolytes were examined. Using anodized SPGE in a phosphate-buffered solution, a nontoxic solution, the sensitivity of PHBA detection was significantly improved compared with pristine SPGE owing to the increase of the polar oxygencontaining functional group during the anodization. The anodized SPGE could detect a PHBA down to 0.073 μmol/L. Finally, the developed anodized SPGE presented high ability and feasibility for PHBA detection in cosmetics. Furthermore, a facile electrode preparation step with a nontoxic solution can present high reproducibility and compatibility with a portable potentiostat for onsite PHBA detection during manufacturing. © 2022 The Authors.