Cite this article as:

Li Zhao, Jinke Wang, Kai Chen, Jingzhi Yang, Xin Guo, Hongchang Qian, Lingwei Ma, and Dawei Zhang, Functionalized carbon dots for corrosion protection: Recent advances and future perspectives, Int. J. Miner. Metall. Mater., 30(2023), No. 11, pp.2112-2133. https://dx.doi.org/10.1007/s12613-023-2675-9
Li Zhao, Jinke Wang, Kai Chen, Jingzhi Yang, Xin Guo, Hongchang Qian, Lingwei Ma, and Dawei Zhang, Functionalized carbon dots for corrosion protection: Recent advances and future perspectives, Int. J. Miner. Metall. Mater., 30(2023), No. 11, pp.2112-2133. https://dx.doi.org/10.1007/s12613-023-2675-9
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功能化碳点在腐蚀防护中的研究进展与展望

摘要: 金属腐蚀会给全球带来重大的经济损失、安全问题和环境污染,因此,腐蚀防护受到了学术界广泛的关注。由于腐蚀不能完全消除,防腐技术的主要目标是探索防腐机制并减缓腐蚀动力学。缓蚀剂和保护涂层是保护金属材料免受腐蚀降解的最常见和最具成本效益的方法。碳点(CDs)是一类新型零维碳纳米材料,由于其具有原料丰富、低毒性、易于化学改性、缓蚀性能和光学性能优异等优点,目前已被证明其可以用于防腐。因此,碳点作为防腐领域中具有应用前景的缓蚀剂和填料,成为近年来腐蚀防护领域的研究热点。本文全面概述了功能化碳点的制备、物理化学性质和其在防腐系统领域的自修复/自预警应用和机制。作为缓蚀剂,由于表面存在电负性原子,碳点可以在金属表面形成均匀吸附的缓蚀膜。此外,可以对碳点进行简单的表面修饰,形成羧基、氨基、羰基和羟基等官能团,从而增强其缓蚀能力。作为涂层填料,碳点形成的有效屏障可以抑制裂纹或局部损伤的扩散,并实现自修复。此外,碳点上的官能团可以与腐蚀过程中产生的Fe3+和H+离子相互作用,从而实现无损腐蚀监测和自预警。最后,本文提出了开发基于功能化碳点的防腐系统的挑战和发展前景。

 

Functionalized carbon dots for corrosion protection: Recent advances and future perspectives

Abstract: Metal corrosion causes significant economic losses, safety issues, and environmental pollution. Hence, its prevention is of immense research interest. Carbon dots (CDs) are a new class of zero-dimensional carbon nanomaterials, which have been considered for corrosion protection applications in recent years due to their corrosion inhibition effect, fluorescence, low toxicity, facile chemical modification, and cost-effectiveness. This study provides a comprehensive overview of the synthesis, physical and chemical properties, and anticorrosion mechanisms of functionalized CDs. First, the corrosion inhibition performance of different types of CDs is introduced, followed by discussion on their application in the development of smart protective coatings with self-healing and/or self-reporting properties. The effective barrier formed by CDs in the coatings can inhibit the spread of local damage and achieve self-healing behavior. In addition, diverse functional groups on CDs can interact with Fe3+ and H+ ions generated during the corrosion process; this interaction changes their fluorescence, thereby demonstrating self-reporting behavior. Moreover, challenges and prospects for the development of CD-based corrosion protection systems are also presented.

 

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