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| Enhancement of Photoelectrochemical Performance of Carbon Quantum Dots Doped Carbon Nitride |
| Received:July 16, 2018 Revised:October 25, 2018 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/ issn.1672-9242.2018.10.004 |
| KeyWord:carbon quantum dots g-C3N4/C-Dots-M photoelectrochemical cathodic protection technology corrosion protec-tion |
| Author | Institution |
| ZHANG Qing-ji |
1. China University of Petroleum, Qingdao , China;2. Key Laboratory of Marine Corrosion and Bio-fouling, IOCAS, Qingdao , China |
| JING Jiang-ping |
2. Key Laboratory of Marine Corrosion and Bio-fouling, IOCAS, Qingdao , China |
| SUN Meng-meng |
2. Key Laboratory of Marine Corrosion and Bio-fouling, IOCAS, Qingdao , China |
| CHEN Zhuo-yuan |
2. Key Laboratory of Marine Corrosion and Bio-fouling, IOCAS, Qingdao , China |
| LI Yan |
1. China University of Petroleum, Qingdao , China |
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| Abstract: |
| Objective To research the photoelectrochemical cathodic protection performance of g-C3N4/C-Dots-M of the composite material. Methods The structure and morphology of the samples were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), and UV-Vis diffuse reflectance spectroscopy. The photoelectrochemical cathodic protection performance was studied by testing the cathodic protection current density-time and potential-time of g-C3N4/C-Dots- Mcomposite material under visible light illumination. Results Under visible light illumination, the mixed potential of the g-C3N4/C-Dots-550 composite coupled with 316L SS dropped to ?0.43 V, and the photoinduced current density of the couple reached 4.3 μA/cm2. Conclusion Compared to pure g-C3N4, g-C3N4/C-Dots-M composites showed enhanced photoelectrochemical cathodic protection performance. This is due to the excellent electrical conductivity of carbon quantum dots. This composite shows tremendous potential in application of photoelectrochemical cathodic protection. |
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