Core-shell mesoporous silica-metal-phenolic network microcapsule for the controlled release of corrosion inhibitor

被引:10
|
作者
Guo, Chengbin [1 ]
Cao, Jiaojiao [1 ]
Chen, Zhenyu [1 ,2 ]
机构
[1] Huazhong Univ Sci & Technol, Sch Chem & Chem Engn, Key Lab Mat Chem Energy Convers & Storage, Minist Educ, Wuhan 430074, Peoples R China
[2] Huazhong Univ Sci & Technol, Sch Chem & Chem Engn, Hubei Key Lab Mat Chem & Serv Failure, Wuhan 430074, Peoples R China
基金
中国国家自然科学基金;
关键词
Corrosion inhibitor; Metal-phenolic network; pH -triggered release; Ion; -exchange; DRUG-RELEASE; COPPER; PH; NANOPARTICLES; NANOCONTAINERS; MOLECULES; COATINGS; ACID; CO2;
D O I
10.1016/j.apsusc.2022.154747
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
A novel pH-sensitive corrosion inhibitor capsule was prepared by forming a metal-phenolic network coating on the surface of mesoporous silica via super-assembly. Chemical characterization, including Fourier transform infrared spectroscopy, Brunauer-Emmett-Teller method, X-ray photoelectron spectroscopy and transmission electron microscopy, confirmed the core-shell structure of the capsule. UV-vis measurements revealed the pHtriggered release behavior of the prepared capsule. Study on its inhibition effect verified that the prepared capsule can respond to the changes of pH and provide outstanding protection for copper. Ion exchange was proposed as the mechanism underlying the pH-triggered release behavior of the capsule.
引用
收藏
页数:14
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