Cadmium oxide is used in ceramic glazes, cadmium electroplating baths, pigments, phosphors, electrodes for storage batteries, cadmium salts, and heterogeneous catalysis for dehydrogenation. It is a basic conducting material used to prepare transparent conducting films, which finds use in phototransistors, liquid crystal displays, photodiodes, photovoltaic cells, and antireflection coatings. Electrodeposited cadmium oxide films have excellent electrocatalytic activity towards many organic compounds, ozone and oxygen evolution. CdO is selective in phenol photodegradation. Glassy carbon electrode coated with cadmium oxide film has been used to develop a sensitive and rapid assay method for penicillamine.
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