Folic acid-based carbon dots as an environmentally friendly and functional inhibitor for metal protection

作者：Zhiji Tang, Weilong Huang, Wenjin Wei, Lin Liu, Shiyu Zheng, Mingang Zou, Xinyun Ye, Yuwei Ye, Qiuhua Jiang · 发表于：Arabian Journal of Chemistry · 年份：2025 · DOI：10.25259/ajc_289_2024 · 被引用次数：4 · 研究领域：Carbon and Quantum Dots Applications、Advanced Photocatalysis Techniques、Mercury impact and mitigation studies

A green and functional inhibitor (Cu-N-CDs) was prepared by combining folic acid with copper gluconate. A series of professional testing equipment was used for structure and performance characterization. By analysis, the obtained Cu-N-CDs inhibitor displayed a super inhibition ability (over 98%) for Escherichia coli ( E. coli ) and Staphylococcus aureus ( S. aureus ). The corrosion inhibition ability of Cu-N-CDs increased with an increase in Cu doping, reaching its maximum value at Cu 3.0 -N-CDs, and then decreased. In this case, the corrosion inhibition efficiency of IE reached up to 92.87% at 200 mg/L. The adsorption of Cu-N-CDs on the interface was chemisorption and physisorption, following the Langmuir adsorption model. The corrosion product and simulation calculation confirmed the formation of a protective layer of inhibitor molecules on the metal surface.