摘要
通过软模板法制备粒径集中在100 nm的介孔二氧化硅作为纳米载体负载缓蚀剂分子苯并三氮唑(BTA),再通过单宁酸与三价铁离子在介孔氧化硅表面自组装形成金属多酚网络结构,由此构筑pH响应的智能控制释放体系。利用TEM,SEM,FTIR等表征手段证实了缓蚀剂分子的成功负载以及外层金属多酚网络结构的成功生长。利用电化学阻抗谱探究了制备的智能控释体系对金属的防护性能影响。结果表明,制备的pH响应智能控释体系能够很好地为铜电极提供防护,同时提升了复合环氧涂层的防护性能。
Mesoporous silica with a particle size of 100 nm was prepared by soft template method as a nanocarrier to load the corro-sion inhibitor molecule benzotriazole(BTA),and then the metal polyphenol network structure was formed by self-assembly of tannic acid and ferric ion on the surface of mesoporous silica,thereby building a pH-responsive intelligent controlled release system.TEM,SEM,FTIR and other characterization methods confirmed the successful loading of corrosion inhibitor molecules and the successful growth of the outer metal polyphenol network structure.Electrochemical impedance spectroscopy(EIS)was used to investigate the effect of the prepared intelligent controlled release system on the protective properties of metals.The results show that the prepared pH-responsive intelligent controlled release system can provide good protection for copper electrode and improve the protective per-formance of the composite epoxy coating.
作者
林森
LIN Sen(Personnel Office of PetroChina Jilin Oilfield Company,Songyuan 138001,China)
出处
《化学研究与应用》
CAS
北大核心
2024年第2期354-360,共7页
Chemical Research and Application
关键词
介孔二氧化硅
缓蚀剂
PH响应
mesoporous silica
corrosion inhibitor
pH response
corrosion inhibitor
