Nanoparticle Size Effect Investigation of Nitrogen-doped Carbon Quantum Dots with their Fluorescence Properties

Document Type : Original Article

Authors

1 Institute of optic and laser, Faculty of Science, University, Malek Ashtar University of Technology , Iran

2 department of Physics, Faculty of science, Malek Ashtar University of Technology

3 Department of Physics, Faculty of Science, Malek Ashtar University of Technology , Iran

Abstract

In this study, the nitrogen-doped carbon quantum dots were synthesized via microwave method using citric acid and urea precursors in a homogeneous aqueous solution. A centrifuge machine was used to eliminate large particles from the samples and to sort nanosized particles with variable centrifugal forces. X-ray diffraction pattern was obtained in order to study the formation of crystalline structure type of the sample and the size of crystallite. The broadening of peak indicated the nanosized formation of synthesized particles. Optical properties of the samples were examined by ultraviolet-visible and photoluminescence spectrometers. The absorption peaks wavelengths depended on particle sizes and had blue shift by decreasing of particle sizes. The Tauc plot indicated that energy gap increased from 2.39 eV to 2.62 eV with decreasing particle size. Emission peaks of nitrogen-doped carbon quantum dots, under the excitation of ultraviolet light, had fluorescence radiations in the visible spectral region of the green-blue.

Keywords

References

  1. Xu, R. Ray, Y. Gu, H. J. Ploehn, L. Gerheart, K. Raker, W. A. Scrivens, “Electrophoretic Analysis and Purification of Fluorescent Single- Walled Carbon Nanotube Fragments,” Journal of the American Chemical Society, 126, 12736- 12737, 2004.
  2. Song, S. Zhu, B. Yang, “Bioimaging based on fluorescent carbon dots,” RSC Advances, 4, 27184-27200, 2014.
  3. Wang and A. Hu; “Carbon quantum dots: synthesis, properties andapplications”; Journal of Materials Chemistry C, 2, 6921-6939, 2014.
  4. Tuerhong, X. Yang, Y. Xue-BO, “Review on Carbon Dots and Their Applications,” Chinese Journal of Analytical Chemistry, 45, 139-150, 2017.
  5. Lin, Y. Luo, P. Tsai, J. Wang, X. Chen; “Metal Ions Doped Carbon Quantum Dots: Synthesis, Physicochemical Properties, and Their Application,” Trends in Analytical Chemistry, 103, 87-101, 2018.
  6. Ashrafizadeh, R. Mohammadinajad, S. Kumar Kailasa, Z. Ahmadi, E. Ghasemipour, A. Pardakhty, “Carbon dots as versatile nanoarchitectures for the treatment of neurological disorders and their theranostic applications: A review,” Advances in Colloid and Interface Science, 278, 102123-102135, 2020.
  7. Wang, M. Li, A. Yu, Y. Zhu, M. Yang, C. Mao, “Fluorescent Nanomaterials for the Development of Latent Fingerprints in Forensic Sciences,” Advanced Functional Materials, 14, 1606243- 1606260, 2017.
  8. Kumar Barman, A. Patra, “Current Status and Prospects on Chemical Structure Driven Photoluminescence behavior of Carbon Dots,” Journal of Photochemistry and Photobiology C: Photochemistry Reviews, 37, 1-22, 2018.
  9. Pajewska-Szmyt, B. Buszewski and R. Gadzala-Kopciuch, “Sulphur and nitrogen doped carbon dots synthesis by microwave assisted method as quantitative analytical nano-tool for mercury ion sensing,” Materials chemistry and Physics, 242, 122484-122493, 2020.
  10. Yang, X. Sun, Z. Wang, X. Wang, G. Guo, Q. Pu; “Anomalous Enhancement of Fluorescence of Carbon Dots through Lanthanum Doping and Potential Application in Intracellular Imaging of Ferric Ion,” Nano Research, 11, 1369-1378, 2017.
  11. Yang, Z. Zhu, M. Chen, W. Chen, X. Zhou, “Microwave-assisted Synthesis of Xylan-derived Carbon Quantum Dots for Tetracycline Sensing,” Optical Materials, 85, 329-336, 2018.
  12. Liu, Z. Li, Y. Sun, X. Geng, Y. Hu, H. Meng, J. Ge, L. Qu, “Synthesis of Luminescent Carbon dots with ultrahigh Quantum Yield and Inherent Folate Receptor Positive Cancer Cell Target ability,” Scientific Reporters, 8, 1086-1094, 2018.
  13. Mitra, S. Chandra, S. H. Pathan, N. Sikdar. P. Pramanik, A. Goswami, “Room Temperature and Solvothermal Green Synthesis of Selfpassivated Carbon Quantum Dots,” RSC Advances, 3, 3189-3193, 2013.
  14. J. Mintz, Y. Zhou, R. M. Leblanc, “Recent Development of Carbon Quantum Dots Regarding their Optical Properties, Photoluminescence Mechanism, and Core Structure,” Nanoscale, 11, 4632-4652, 2019.
  15. M. Carbonaro, R. Corpino, M. Salis, F. Mocci, S. V. Thakkar, Ch. Olla, P. C. Ricci, “On the Emission Properties of Carbon Dots: Reviewing Data and Discussing Models,” Journal of Carbon Research C, 5, 60, 2019.
  16. L. Pavia, G. M. Lampman, G. S. Kriz, J. A. Vyvyan, “Introduction to Spectroscopy,” Cengage Learning; 5 Edition, USA, 2015.
  17. Sabet, K. Mahdavi, “Green Synthesis of High Photoluminescence Nitrogen-doped Carbon Quantum Dots from Grass via a Simple Hydrothermal Method for Removing Organic and Inorganic Water Pollutions,” Applied Surface Science, 463, 283-291, 2019.

Files

History

  • Receive Date: 18 December 2020
  • Revise Date: 07 April 2021
  • Accept Date: 11 January 2021

Share

How to cite

Statistics