Deposition of copper on non-metallic objects
Good afternoon! In this article, we will consider the process of electrochemical deposition of copper on conductive surfaces, and also try to cover the walnut with a copper layer.Mix and filter through a funnel and cotton pad. Install and fix the copper electrode:
NeedSo, for the experiment we need:
- Non-metallic container - chemical beaker or conventional tray, the precipitation process will take place;
- Water, preferably purified;
- Copper sulfate ( sold in stores to give);
- Acid electrolyte for batteries (in auto shops);
- Charger 5 Volt, 0.3 Ampere;
- 1 kΩ and 220 ohm resistors to limit the applied current;
- Copper electrode
Try on metalFall asleep in capacity 100 sulphate, fill half a liter of water and add 70 grams of acid electrolyte.
ExperienceFirst, let us cover the usual iron nail with copper. Coverage area - 10 cm². We clean with sandpaper:
We cover the copper nutWe understood with metals, but what about dielectrics, they do not conduct current and the reaction simply does not begin. But there is a solution: you need to cover our subject with conductive material. The last one is fine graphite, from which rods are made for simple pencils.
ProcessingIn order to bring a pleasant shine to the copper surface, we will cover it patina, and then we polish. For this we need:
- Ammonia, also ammonia solution;
- Sulfuric checker (can be found in stores to give);
- Chemical or disposable glass;
- Fine-grained emery paper.
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