Preparation of a TiO_(2)@o-Vanillin@TEOS-APTES Nanocontainer and Its Anti-Corrosion Performance on Steel  

作　　者：Wu Yaqi Xing Jinjuan Qian Jianhua Liu Lin 

机构地区：[1]Liaoning Province Key Laboratory for Surface Functionalization of Titanium Dioxide Powder,College of Chemical and Material Engineering,Bohai University,Jinzhou 121013,Liaoning,China [2]Liaoning Shihua University College of Chemistry and Materials Science Fushun,113006,China

出　　处：《China Petroleum Processing & Petrochemical Technology》2022年第4期36-50,共15页中国炼油与石油化工（英文版）

基　　金：supported by the National Natural Science Foundation of China(21878024);the Innovation Team Project of Colleges and Universities in Liaoning Province(2018479-14,LT2015001).

摘　　要：A TiO_(2)@o-vanillin@TEOS-APTES nanocontainer was prepared by an experimental process in which,firstly,2-hydroxy-3-methoxybenzaldehyde(o-vanillin)was loaded in a TiO_(2) container to obtain TiO_(2)@o-vanillin.Then,TiO_(2)@o-vanillin was encapsulated by tetraethyl orthosilicate(TEOS).Finally,3-aminopropyl triethoxysilane(APTES)was used to modify the obtained sample.The morphology,structural phase and thermal stability of the TiO_(2)@o-vanillin@TEOS-APTES nanocontainer were analyzed using scanning electron microscopy(SEM),energy dispersive spectroscopy(EDS),Fourier transform infrared spectroscopy(FTIR),X-ray diffractometry(XRD)and thermal gravimetric analysis(TG).The release rate of o-vanillin was investigated using an ultraviolet-visible(UV-vis)spectrometer.The anti-corrosion performances of the epoxy,epoxy@o-vanillin and epoxy@TiO_(2)@o-vanillin@TEOS-APTES coatings on steel sheets were evaluated using an electrochemical method and scarification experiments.The results showed that the impedance value of the epoxy@TiO_(2)@o-vanillin@TEOS-APTES coating was two orders of magnitude higher than that of the blank epoxy coating,and one order of magnitude higher than that of the epoxy@o-vanillin coating.The maximum inhibition rate of the epoxy@TiO_(2)@o-vanillin@TEOS-APTES coating on the steel can reach 97.3%.The scarification experiments confirmed that the epoxy@TiO_(2)@o-vanillin@TEOS-APTES coating had the best anti-corrosion performance.

关 键 词：TiO_(2) o-vanillin ANTI-CORROSION EPOXY NANOCONTAINER 

分 类 号：TG172[金属学及工艺—金属表面处理]