Carbon Dots Derived from Jaggery Via Direct Heating: A Sensitive Platform for Ferric Ion Fluorescent Sensing

Author:

Kolekar Akanksha G.12,Nille Omkar S.1,Naik Vaibhav M.3,Koparde Sneha V.1,Patil Akshay S.4,Shintre Somesh S.1,Sohn Daewon4,Kolekar Govind B.1,Gokavi Gavisiddappa S.5,More Vishalkumar R.2ORCID

Affiliation:

1. Fluorescence Spectroscopy Research Laboratory Department of Chemistry Shivaji University Kolhapur, MS 416004 India

2. Department of Chemistry The New College Kolhapur, MS 416012 India

3. Department of Chemistry P. E. S.'s Ravi S. Naik College of Arts and Science Farmagudi Ponda, Goa 403401 India

4. Department of Chemistry and Research Institute for Convergence of Basic Science Hanyang University, Seoul Campus Seoul 04763 South Korea

5. Department of Chemistry Shivaji University Kolhapur. MS 416004 India

Abstract

AbstractPhotoluminescent carbon dots (CDs) have greatest potential in fluorescence sensing, energy, bioimaging and environmental pollutant sensing. Heteroatom doping have dramatically enhanced fluorescent properties and stability of CDs. In this work, sulfur doped carbon dots (DCDs) using jaggery as carbon precursor through direct heating method at 180 °C. The synthesized DCDs were characterized through XRD, FTIR, XPS, TEM, Fluorescence and UV‐Visible spectroscopic techniques. The DCDs have 9 nm particle size with amorphous nature and surface decorated with −OH, C−S, C=O functional groups on surface because of contribution of major element like C, O, and S elements. The DCDs showing bright blue emission having 360 nm excitation and 460 nm emission wavelength. Further, the DCDs were employed for metal ion sensing and it selectively detects Fe3+ metal ion with 1.92 μg/mL of detection and 5.84 μg/mL limit of quantification. The experiment follows static quenching mechanism which is confirmed by fluorescence life time experiment. This low‐cost, time effective fluorescent sensitive carbon dots have potential application in environmental pollution control, biomedical and forensic applications.

Publisher

Wiley

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