SYNTHESIS OF CARBON DOTS BASED ON CHITOSAN AND UREA
Carbon dots (CDs) are one of the latest representatives of luminescent carbon nanomaterials. Due to their high solubility and stability, biotechnological compatibility, and low toxicity, carbon dots have attracted the attention of researchers. Their applications in various fields, such as sensors, photocatalysis, corrosion inhibitors, and solar panels, make them economically and technologically significant. In this study, carbon dots were synthesized using chitosan and urea through the hydrothermal method. The effects of pH, time, and temperature on the synthesis process were investigated. Particle size was thoroughly analyzed using the NKT-N9 Nano Particle Sizer and Transmission Electron Microscopy (TEM).
1. Saraswat V., Yadav M. Carbon dots as green corrosion inhibitor for mild steel in HCl solution // ChemistrySelect. - 2020. №.5, №25. – P. 7347-7357.
2. Lv J., Fu L., Zeng B., Tang M., Li J. Synthesis and acidizing corrosion inhibition performance of N-doped carbon quantum dots// Russian Journal of Applied Chemistry. - 2019. - №. 92, № 6. - P. 848-856.
3. Cui M., Qiang Y., Wang W., Zhao H., Ren S. Microwave Synthesis of Ecofriendly Nitrogen Doped Carbon Dots for the Corro-sion Inhibition of Q235 Carbon Steel in 0.1 M HCl // Int. J. Electrochem. Sci. - 2021. - №. 16. – P.151019-151020.
4. Q.H. Zhang, B.S. Hou, Y.Y. Li, G.Y. Zhu, H.F. Liu, G.A. Zhang, Two novel chitosan derivatives as high effcient eco-friendly inhibitors for the corrosion of MS in acidic solution, Corros. Sci. 164 (2020), 108346.
5. Cen H., Chen Z., Guo X. N, S co-doped carbon dots as effective corrosion inhibitor for carbon steel in CO2-saturated 3.5% NaCl solution // Journal of the Taiwan Institute of Chemical Engineers. - 2019. -№. 99. - P. 224-238.
6. M.M. Solomon, H. Gerengi, Tugce Kaya, S.A. Umoren, Enhanced corrosion inhibition effect of chitosan for St37 in 15% H2SO4 environment by silver nanoparticles, Int. J.Biol. Macro. 104 (2017) 638 649.
7. A.M. Fekry, R.R. Mohamed, Acetyl thiourea chitosan as an eco-friendly inhibitor for mild steel in sulphuric acid medium, Electrochim. Acta 55 (2010) 1933–1939.
8. C. Zhou, Z. Li, J. Li, T. Yuan, B. Chen, X. Ma, D. Jiang, X. Luo, D. Chen, Y. Liu, Epoxy composite coating with excellent anticorrosion and self-healin performances based on multifunctional zeolitic imidazolate framework derived nanocontainers, Chem. Eng. J. 385 (2020), 123835.
9. C. Zhang, X. Luo, X. Pan, L. Liao, X. Wu, Y. Liu, Self-healing Li-Al layered double hydroxide conversion coating modifed with aspartic acid for 6N01 Al alloy, Appl. Surf. Sci. 394 (2017) 275–281.
10. Cao S., Liu D., Wang T., Ma A., Liu C., Zhuang X., Ding H., Mamba B. B., Gui J. Nitrogen-doped carbon dots as higheffective inhibitors for carbon steel in acidic medium // Colloids and Surfaces A: Physicochemical and Engineering Aspects. - 2021. - №. 616. - P. 126280-126281.
11. Jain P., Patidar B., Bhawsar J. Potential of nanoparticles as a corrosion inhibitor: a review // Journal of Bio-and TriboCorrosion. - 2020. - №.6. –P.1-12.
12. Salleh S. Z., Yusoff A. H., Zakaria S. K., Taib M. A. A., Seman A. A., Masri M. N., Mohamad M., Mamat S., Sobri S. A., Ali A. Plant extracts as green corrosion inhibitor for ferrous metal alloys: A review // Journal of Cleaner Production. - 2021. - №. 304. –P. 127030-127031.
13. Haruna K., Saleh T. A., Quraishi M. A. Expired metformin drug as green corrosion inhibitor for simulated oil/gas well acidizing environment // Journal of Molecular Liquids. - 2020. - №. 315. –P. 113716-113717.
14. M. Zhang, L. Bai, W. Shang, W. Xie, H. Ma, Y. Fu, et al., Facile synthesis of water– soluble, highly fluorescent graphene quantum dots as a robust biological label for stem cells, J. Mater. Chem. 22 (15) (2012) 7461–7467.
15. X. Miao, D. Qu, D. Yang, B. Nie, Y. Zhao, H. Fan, et al., Synthesis of carbon dots with multiple color emission by controlled graphitization and surface functionalization, Adv. Mater. 30 (1) (2018) 1704740.
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