Abstract
BackgroundThis work aimed to explore a way that can effectively alternative traditional and hazardous corrosion inhibitors. MethodsWe synthesized a novel N-doped carbon dots (NCDs) were prepared by hydrothermal method, elucidated its chemical structure using different spectroscopic techniques, the behavior of NCDs for copper in H2SO4 solution was studied by electrochemical measurement, microscopic surface observation and X-ray photoelectron spectroscopy (XPS). Results demonstrate that the inhibitor being studied is a mixed-type, the higher the concentration, the higher the inhibition efficiency, reaching 96.1%. This novel inhibitor could adhere to the copper surface because of its properties of nanomaterials, such as diffusion and agglomeration. Morover, the interaction between Cu2+ and NCDs causes in the formation of a netted anti-corrosion film on the surface of copper. SignificantThis work puts forward the corrosion mechanism of NCDs, which can provide powerful guidance for the application of new nanomaterials in metal corrosion.
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