Spectroscopic Electrochemical Studies On Corrosion Inhibition Effect Of Purine Substance On Metallic Copper

Copper and its alloy material has good conductivity, thermal conductivityand mechanical properties, antibacterial properties, are widely used in electricpower, chemical industry, machinery, etc. In the current green or environmentalfriendly corrosion research, relatively inexpensive and easy puriifcation of purinecompounds, because of its non-toxic and biodegradable make research on thecorrosion performance has positive significance.Surface Enhanced Raman Scattering (Surface Enhanced Raman Scattering,SERS) spectra of the Surface of because of its high sensitivity, easy to obtain lowwave number range of molecules and metal interaction information and solventwater features of small disturbance, including self-assembled monolayer film hasbecome a metal Surface structure and Surface properties, including all kinds ofchemical modification research of a kind of very important means. Usedespecially of electrochemical SERS spectroscopy, because of its great tipenhancement effect, for we know from the molecular level metal electrodesurface electrochemical adsorption and reaction behavior provides theconvenience.Combination used at the scene of the electrochemical SERS spectra with theadvantage of its high surface detection sensitivity, and with the aid ofelectrochemical cyclic voltammetry, ac impedance method and polarization curvemethod study of adenine and guanine and its maternal purine as excellent greenefifciency of the corrosion inhibitor. By molecular self-assembly technologypreparation of adenine and guanine, purine molecules SAMs applied to metalcopper corrosion electrochemical characteristics of the preliminary analysis, thispaper discusses structure and molecular adsorption characterization. Used at thescene of the electrochemical SERS spectra, was used to study the adenine andguanine self-assembled molecular features of membrane structure change withpotential，used by comparing the molecular adsorption on the base of SERSspectra of change，analysis under the outside conditions change the micromechanism of the molecular adsorption configuration change. Preliminarydiscussion on the adenine and guanine molecules on the surface of the copper electrode, self-assembly for the corrosion inhibition of copper. And try tocombine metrology method to explain its adsorption mechanism.