作者: Gopal Ji , Rajiv Prakash , None
DOI: 10.1016/J.MOLLIQ.2019.02.026
关键词: Corrosion 、 Electrochemistry 、 Calcination 、 Copper 、 Langmuir 、 Composite material 、 Adsorption 、 Chloride 、 High-resolution transmission electron microscopy 、 Materials science
摘要: Abstract Donor-π-Acceptor (D-π-A) type compounds are very interesting for corrosion study since they have unique structural configuration. Their high chemical reactivity promotes an easy bonding with the metals, which helps in inhibition. In this work, ethyl-2-cyano-3-(4-(dimethylamino) phenyl) acrylate (ECDPA) (a D-π-A compound) is used to restrict copper loss 1 M HCl. The impedance analysis portrays that ECDPA saves 75% of at its maximum concentration HCl solution. To further increase inhibition efficiency, ECDPA-ZnO composites developed. ZnO synthesized hydrothermally and calcined two different temperatures (300 °C 500 °C). morphology changes drastically calcination; however, main morphological difference 300 °C (Z3) 500 °C (Z5) increment porosity. Hence, made analyze change behavior composites. designated as: EZ3 EZ5. characterizations ZnO, been performed by UV–visible spectroscopy, FTIR HRTEM, HRSEM, EDAX XRD techniques. efficiencies EZ5 achieved as 78% 81%. This fact suggests increases adsorption over surface, confirmed Langmuir electrochemical atomic force microscopy (EC-AFM) measurements.