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Copper electroplating

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Spongin scaffolds carbonized at 1200°C were electrically conductive and were used as electrodes in electrochemical processes. The cathodic electrochemical processes may be described by Eqs. 1 and 2, where the prepared substrate was used as a cathode for the electrochemical deposition of Cu$Cu2++2e−→Cu0$(1)$2H++2e−→H2$(2)

The electrochemical deposition of copper was carried out in a 50-ml glass tumbler with electrolyte subject to a DC voltage of 0.2 V and a current of 0.02 A for 2 hours. The DC source was a VoltCraft PS2403D laboratory power supply (Germany) with fine control of voltage (stability, 0.5%) and current. Copper sulfate solution (0.1 M) containing sulfuric acid (4 g liter−1) was used as the electrolyte.

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