去壳
涂层
碳量子点
碳纤维
量子点
碳钢
材料科学
纳米技术
化学工程
化学
冶金
腐蚀
复合材料
植物
生物
工程类
复合数
作者
Nikhil Rahul Dhongde,Nipu Kumar Das,Tamal Banerjee,Prasanna Venkatesh Rajaraman
标识
DOI:10.1016/j.indcrop.2024.118329
摘要
Carbon quantum dots synthesized from waste biomass (RH-QDs) through a hydrothermal synthesis reaction was explored for the anti-corrosive applications. 0.1 and 0.5 wt% RH-QDs (with respect to epoxy) were integrated into the epoxy composite and applied to a carbon steel substrate. The anti-corrosive performance of coating was investigated using electrochemical impedance spectroscopy (EIS), potentiodynamic polarization, and salt spray test. The outcomes showed that the use of RH-QDs significantly enhanced the corrosion protection performance of the epoxy coating in 3.5 wt% NaCl. In addition, the adhesion strength of epoxy on the carbon steel substrate was also enhanced (3.6 MPa) due to the bond interaction between RH-QDs and epoxy. The complementary analysis based on the density functional theory (DFT) reveals that the RH-QDs significantly influence the strengthening of the interface between this moiety and the epoxy-hardener, thereby retarding the electrochemical reaction.
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