Abstract
The remarkable optical properties and strong biocompatibility of carbon dots make them highly promising for applications in biochemical sensing and environmental testing. These carbon dots possess a surface that is easily modifiable. In this study, carbon dots have been successfully synthesized and modified by the addition of N and B dopants using the microwave method, along with the functionalization of their surface functional groups with bovine serum albumin (BSA). The maximum fluorescence intensity of N, B-CDs is observed at 462 nm when excited at a wavelength of 352 nm. N, B-CDs have a spherical size with a diameter ranging from 2 to 6 nm, confirmed by UV-Vis absorption spectra and the presence of functional groups in the FT-IR absorption patterns. BSA-functionalized N, B-CDs as the fluorescent probe demonstrate great potential as a sensor for Pb(II) ions in water, with a very low detection limit of 1.05 µg/L. This research could contribute to the development of fluorescence nanosensors.
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Authors thank to Universitas Gadjah Mada for the research facilitation through the Academic Excellence program with the letter of assignment number 7725/UN1.P.II/Dit-Lit/PT.01.03/2023.
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Suherman, S., Yoel, A.N., Suratman, A. et al. Carbon Dots Modified Multi Dopants Nitrogen and Boron for an Early Detection of Lead in the Environment. Bull Environ Contam Toxicol 112, 71 (2024). https://doi.org/10.1007/s00128-024-03892-z
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DOI: https://doi.org/10.1007/s00128-024-03892-z