Solvothermal synthesis of functionalized carbon dots from amino acid as an eco-friendly corrosion inhibitor for copper in sulfuric acid solution

• Published in: Journal of colloid and interface science Vol. 604; pp. 1 - 14
• Main Authors: Zhang, Yu, Zhang, Shengtao, Tan, Bochuan, Guo, Lei, Li, Hantang
• Format: Journal Article
• Language: English
• Published: Elsevier Inc 15.12.2021
• Subjects: adsorption; citric acid; Copper; corrosion; Corrosion inhibitor; electrochemistry; Fourier transform infrared spectroscopy; N-CDs; Raman; serine; sulfuric acid; X-ray photoelectron spectroscopy; XPS; Raman; XPS; N-CDs; Copper; Corrosion inhibitor
• ISSN: 0021-9797; 1095-7103; 1095-7103
• DOI: 10.1016/j.jcis.2021.07.034

Solvothermal synthesis of functionalized carbon dots from amino acid as an eco-friendly corrosion inhibitor for copper in sulfuric acid solution. [Display omitted] In this work, novel N-doped carbon dots (N-CDs) were synthesized from citric acid and l-serine. The results of fourier transform infrared (FT-IR) and X-ray photoelectron spectroscopy (XPS) show that there are many unsaturated bonds and polar groups in the N-CDs. The inhibition performance of the concerned zero-dimensional nanomaterial for copper was investigated by electrochemical, combining FT-IR, XPS and Raman to investigate the corrosion products. Results indicate that the N-CDs were found to be effective inhibitor with the suppression efficiency as high as 98.5% means after immersed for 24 h, and they interacted with copper substrate by chemical & physical adsorption. Moreover, the related anticorrosion mechanism was explored and elucidated in detail. The purpose of this work is to explore eco-friendly and efficient corrosion inhibitor materials for metal protection.