Fabrication of highly fluorescent graphene quantum dots for quantification of As<sup>3+</sup> ion using modified cellulose paper
Easy, economical, and swift detecting tools are very demanded for assaying various chemical species. The introduction of label-free paper-based read-out devices has significantly reached the demand of analytical science for target analytes assays. Herein, a facile, and disposable inexpensive paper-based sensing tool was fabricated for sensing As<sup>3+</sup> ion using graphene quantum dots (GQDs) as a fluorescent reader. The CA-GQDs were synthesized using citric acid (CA) as a precursor via the pyrolysis method, further physisorbed on the cellulose substrate for sensing of As<sup>3+</sup> via aggregation-based fluorescence "turn-off" mechanism. The linear range for quantitating As<sup>3+</sup> ion is in the range of 0.05-50 μM with a detection limit of 10 nM. The practical application of the CA-GQDs-based analytical platform was verified by assaying As<sup>3+</sup> ion in water samples. The CA-GQDs-embedded paper strip can be easily extended for assaying of As<sup>3+</sup> ion, which meets the demand for monitoring of As<sup>3+</sup> ion in real samples.
Authors
- Suresh Kumar Kailasa (ORCID: https://orcid.org/0000-0003-4058-0145)
- Jigna R. Bhamore (ORCID: https://orcid.org/0000-0003-4861-1778)
- Tae Jung Park (ORCID: https://orcid.org/0000-0001-8918-0957)
- Jin‐Soo Park (ORCID: https://orcid.org/0000-0003-4487-946X)
Institutions
- Sardar Vallabhbhai National Institute of Technology Surat (IN)
- Chung-Ang University (KR)
Publication Details
- Journal
- Luminescence
- Published
- 2024-09-01
- DOI
- https://doi.org/10.1002/bio.4895
- Citations
- 1
- Primary Topic
- Carbon and Quantum Dots Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.12
Funders
- Chung-Ang University
- National Research Foundation of Korea
- Ministry of Science and ICT, South Korea