Spontaneous Formation of Photosensitive Cuprous Oxide Layers

Spontaneous Formation of Photosensitive Cuprous Oxide Layers 

When considering the second kind electrodes in Section 2.3, copper covered by CujO was referred to as a prominent example. Cuprous oxide layers developed in electrochemical systems are interesting from various points of view. In the first place, such layers are known to form during copper corrosion. Research in this field are very important and large in number (see, e.g.. Ref [1-12] and references therein). Extensive investigations of photoelectrochemical phenomena in these systems provide further insights into the corrosion mechanism and may be useful in improving copper corrosion resistance. However, these problems are not the main objective of the present review. 

The data available in the literature show that various conditions of oxide formation were used anodic oxidation of copper, exposure of Cu electrode in contact with solution under open-circuit conditions, calcination of Cu in the open atmosphere, and so on. Surface oxides developed during anodic polarization of 

Electrochemistry of Metal Complexes Applicationsfrom Electroplating to Oxide Layer Formation, First Edition. Arvydas Survila. 

At present, there is no doubt that the (photo)electrochemical properties of oxide layers depend strongly on the conditions under which they are built up. Hence, the possibility exists to obtain Cu20-containing formations with characteristics that are not typical of monocrystals or polycrystaUine compacts. The nature of the ligands, as well as the composition of the Hgand-containing solutions, is of great importance here. 

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I 10 Spontaneous Formation of Photosensitive Cuprous Oxide Layers... 

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