Extraction of a high efficiency and long-acting green corrosion inhibitor from silkworm excrement and its adsorption behavior and inhibition mechanism on copper

被引：26
作者：
Guo, Xiaomeng [1 ]
Wu, Fengqi [1 ]
Cheng, Tiancai [1 ]
Huang, Hualiang [1 ]
机构：
[1] Wuhan Inst Technol, Sch Chem & Environm Engn, Key Lab Green Chem Proc,Minist Educ, Key Lab Novel Reactor & Green Chem Technol Hubei, Wuhan 430074, Peoples R China
来源：
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2021年 / 631卷
关键词：
Pheophytin; Copper; Inhibition performance; Quantum chemical calculation; Molecular dynamics simulation; MILD-STEEL; DERIVATIVES; SURFACE; BENZOTRIAZOLE; DOMPERIDONE;
D O I：
10.1016/j.colsurfa.2021.127679
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 high efficiency and long-acting green corrosion inhibitor (pheophytin) was extracted from silkworm excrement, and its adsorption measurements, surface technologies, and theoretical calculations. The results showed that pheophytin had high efficiency and long-acting inhibition performance at a concentration of 0.1 g/L, and the inhibition efficiency reached 93.97% after soaking for 2 h. The adsorption of pheophytin on the copper surface conformed to Langmiur adsorption isotherm, and the adsorption method was physical and chemical mixed adsorption. The pheophytin molecules were spread on the copper surface in a parallel manner so that it covered the largest area to exert an excellent inhibition effect.
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页数：13
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