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Large-scale cathodic carboxylation of copper surfaces

Abstract : Large scale carboxylation of copper can easily be achieved by redn. of CO2 solubilised in aprotic polar solvents in the presence of tetramethylammonium salts (TMeA+ X-). Carbon dioxide could be inserted into the metal matrix (presumably in the form of the carbon dioxide anion radical) at high surface concns. (up to 10- 7 mol cm- 2), most probably organized in multi-layers. With significant amts. of electricity (> 0.1 × 10- 2 C cm- 2), this cathodic procedure leads to an impressive corrosion phenomenon. Importantly, the interfacial carboxylation of copper may efficiently protect the interface against anodic corrosion (gain up to ΔE ≈ + 1.3 V). Moreover, the insertion process is reversible and anodic oxidn. leads to release of gaseous CO2. Lastly, the external poly-carboxylated layers can easily be tailored to produce a variety of chem. modified interfaces.
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Submitted on : Tuesday, July 4, 2017 - 11:20:25 AM
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Jacques Simonet. Large-scale cathodic carboxylation of copper surfaces. Electrochemistry Communications, Elsevier, 2017, 76, pp.67-70. ⟨10.1016/j.elecom.2017.01.018⟩. ⟨hal-01475819⟩

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