Journal
PROTECTION OF METALS AND PHYSICAL CHEMISTRY OF SURFACES
Volume 56, Issue 3, Pages 638-650Publisher
MAIK NAUKA/INTERPERIODICA/SPRINGER
DOI: 10.1134/S2070205120030302
Keywords
MOFs material; adsorption; corrosion inhibition; copper; dilute HCl
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Funding
- National Nature Science Foundation of China [21266006, 61661014, 21661010]
- Nature Science Foundation of Guangxi Province [2016GXNSFAA380109, 2018GXNSFAA281198, 2018GXNSFBA281135, 2017GXNSFGA198005]
- Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, Collaborative Innovation Center for Exploration of Hidden Nonferrous Metal Deposits and Development of New Materials in Guangxi
- Guangxi Zhuang Autonomous Region
- Guangxi One Thousand Young and Middle-aged College and University Backbone Teachers Cultivation Program
- Guangxi Science and Technology Base and Talents Special Project [2018AD09002]
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In this paper, a small molecular complex {[Cu(2,3-Hpyza)] center dot 2(H2O)} (compound1) was synthesized by solvothermal method from pyrazine dicarboxylic acid and Cu(H3COOH)(2)center dot H2O. A metal organic framework (MOF) compound {[Nd-2(2,3-Hpyza)(3)] center dot 4(H2O)}(n)(compound2) was synthesized by solvothermal method from pyrazine dicarboxylic acid and Nd(NO3)(3)center dot nH(2)O. Weight loss method, electrochemical measurement technique, and scanning electron microscopy technique were used to study the corrosion inhibition behavior of compound2and compound1on copper in 1 mol L-1HCl. At 25 degrees C, compound1and2had the highest corrosion inhibition rate of copper was 91.4% and 87.5% with concentration of 0.5 mmol L-1, respectively. The corrosion inhibition performance of compound2was better than compound1on copper corrosion. Both compound1and compound2were adsorbed on the surface of the copper, and accorded with the Langmuir isotherm adsorption equation.
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