Synthesis of N-deficient g-C3N4/epoxy composite coating for enhanced photocatalytic corrosion resistance and water purification
Source abstract
Abstract
Vessels inevitably suffer from hull corrosion and encounter contaminated seawater during their service, which is imperative to find a way to both resist corrosion and effectively purify the water. Herein, N-deficient g-C3N4 was prepared by alkali-assisted thermal polymerization and combined with an epoxy resin to successfully synthesize a CNx/EP composite coating with excellent corrosion resistance and effective degradation of organic pollutants in simulated marine environment. Furthermore, corresponding characterization verified that the synthesized N-deficient carbon nitride exhibited high specific surface area and better water dispersibility. In addition, the corrosion resistance of the coatings was investigated by open-circuit potential (OCP), electric polarization curves, and electrochemical impedance spectroscopy (EIS), and the results showed that the CNx-1/EP coating presented the optimal corrosion resistance with a maximum impedance radius of 2.84 × 107 Ω cm2, which was two orders of magnitude higher than that of pure EP coating. The degradation experiments demonstrated that the degradation rate of methyl blue (MB, 30 mg L−1) reached 68% over CNx/EP coating within 4 days’ sunlight irradiation. Finally, the photocatalytic corrosion protection and degradation mechanism of the CNx/EP coating was discussed. This work provides new design ideas for the construction of multifunctional anti-corrosion coatings.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced Photocatalysis Techniques · ZnO doping and properties · Ga2O3 and related materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (100+)
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