Abstract
Copper, as the fifth most usual metal in the earth's crust, is very useful in pure or alloying form. The metallic systems constructed from copper is susceptible to corrosion in the aggressive medium like the acidic solution. Many efficient strategies for protecting copper from corrosion have been developed. Among them, using corrosion inhibitors is considered be a most popular technique. Many commercial inorganic and organic compounds are effective inhibitors, but most of them are toxic and the synthetic procedure is environmentally threatening. Because of their ecofriendly and good water solubility, recently carbon dots (CDs) are also being used as green aqueous phase corrosion inhibitors. In this review, research progress on CDs, especially those heteroatom-doped CDs as corrosion inhibitors for copper and its alloy is systematically summarized. The synthetic procedure, the morphology and the structure of the various CDs are discussed. The corrosion resistance performance, kinetics, thermodynamics, quantum computational chemistry and inhibition mechanism of CDs for copper metal are fully reviewed. Moreover, challenges, suggestions and opportunities regarding the development of CDs as corrosion inhibitors for copper are presented. The knowledge and inspiration gained from this review will deepen the current understanding of CDs as corrosion inhibitors and motivate more scientists to provide valuable contributions to this topic in the future.
Published Version
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