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Schwarzes Gold – aber kein Öl: Ein nanoporöser schwarzer Goldfilm bildet sich durch Anodisierung von Gold in einer Oxalatlösung. Der schwammartige Film ist porös mit einer gleichförmigen Lochgröße von ca. 20 nm (siehe Bild). Der Bildungsmechanismus ist noch unklar, wahrscheinlich tragen aber Kohlenstoff‐Formen, die durch die anodische Reaktion von Oxalationen entstehen, zum Wachstum zahlreicher Nanoporen...
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