| Autor: |
Weilong Huang, Zhiji Tang, Xiaonian Liu, Lin Liu, Huanglian Zhong, Yanyan Yu, H. Chen, C. Wang, Qiuhua Jiang, Y.W. Ye, Xinyun Ye |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
|
| Zdroj: |
Journal of Materials Research and Technology, Vol 32, Iss , Pp 2149-2159 (2024) |
| Druh dokumentu: |
article |
| ISSN: |
2238-7854 |
| DOI: |
10.1016/j.jmrt.2024.08.048 |
| Popis: |
Citric acid-based carbon dots (CA-CDs) with different amounts of heteroatoms N were obtained through hydrothermal synthesis method. The microstructure, optical, antibacterial and anticorrosive behaviors were systematically analyzed. Through detection, the N atoms existed in the form of pyridine-like N, pyrrole-like N and graphitic N, and promoted the grain coarsening of carbon dots. The CA-N-CDs displayed obvious pH dependence and good stability from optical behavior analysis. The antibacterial ability of citric acid-based carbon dots was improved by inserting N atom, and the antibacterial rate was directly proportional to the amount of N atom, which was up to 95% for E. coli and S. aureus. However, the anticorrosion ability showed an initial increase followed by a decrease as the amount of N atom increased, reaching its peak at CA-N12%-CDs. At this moment, the corrosion current density (icorr) of metal was 4.68 × 10−6 A/cm2, which decreased by 122 times compared with the blank solution. Meanwhile, the corrosion inhibition rate (IE) for metal was up to 96%, which mainly depended on the tight adsorption of citric acid-based carbon dots on the metal surface. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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