Electrochemical process of early-stage corrosion detection based on N-doped carbon dots with superior Fe3+ responsiveness
| Autor: | Weiguo Tian, Guilong Yan, Ruonan Jia, Jinming Zhang, Zheng Liu, Jun Zhang, Feng Chen |
|---|---|
| Rok vydání: | 2022 |
| Předmět: |
Detection limit
Materials science chemistry.chemical_element Nanotechnology Electrochemistry Fluorescence Surfaces Coatings and Films Electronic Optical and Magnetic Materials Corrosion Biomaterials Metal Colloid and Surface Chemistry chemistry visual_art Self-healing hydrogels visual_art.visual_art_medium Solubility Carbon |
| Zdroj: | Journal of Colloid and Interface Science. 606:567-576 |
| ISSN: | 0021-9797 |
| DOI: | 10.1016/j.jcis.2021.08.058 |
| Popis: | Iron corrosion is a subject of great technological importance and extensive public concern. However, the highly efficient detection of iron corrosion at early stage is still a challenging task. Herein, bright fluorescent carbon dots (CDs) with superior response to Fe3+ were prepared by simple solvothermal process based on citric acid and ammonia. The obtained CDs are able to rapidly, sensitively and selectively respond to Fe3+. The quantitative analysis showed that the CDs exhibited a linear response to Fe3+ in the range of 10 to 300 µM, with a detection limit of 0.9 μM. And the fluorescence quenching of CDs was obvious enough to be detected by the naked eyes. Such promising responsiveness of CDs offers a great opportunity for real-time and visual detection of Fe3+ during electrochemical corrosion process. In addition, due to the excellent stability and solubility of CDs, patterned papers and hydrogels have been fabricated utilizing cellulose and PVA as matrices. The as-prepared biocompatible, environmental-friendly and disposable CDs based fluorescent materials were successfully used for detecting the degree of iron corrosion. This could provide a simple and visual strategy for monitoring the safety of structural metal materials. |
| Databáze: | OpenAIRE |
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