Abstract Functionalized carbon nanotubes (FCNTs) were synthesized by hydrothermal method and adopted as a corrosion inhibitor of carbon steel in CO2-saturated NaCl solution. Results revealed that FCNTs can effectively inhibit carbon steel corrosion, and their inhibition efficiency is close to 90 % at the concentration of 100 mg L−1. FCNTs can adsorb on carbon steel via functionalized groups and make up the hydrophobic layer on the metal surface, which also inhibits the diffusion migration of corrosive mediums as confirmed by molecular dynamics simulation. Adsorption kinetic and thermodynamic isotherm were studied to discuss the difference of FCNTs with traditional inhibitors.

中文翻译：

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功能化碳纳米管作为新型抑制剂提高碳钢在 CO2 饱和 NaCl 溶液中的防腐性能

摘要 采用水热法合成功能化碳纳米管（FCNTs），作为碳钢在CO2饱和NaCl溶液中的缓蚀剂。结果表明，FCNTs能有效抑制碳钢腐蚀，在100 mg L-1的浓度下，其抑制效率接近90%。FCNTs可以通过官能团吸附在碳钢上，构成金属表面的疏水层，分子动力学模拟证实，这也抑制了腐蚀性介质的扩散迁移。研究了吸附动力学和热力学等温线，讨论了 FCNTs 与传统抑制剂的区别。