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Electrochemical reduction of metal salts as a method for preparing highly dispersible metal colloids and metal clusters immobilized on substrates by electrochemical reduction of metal salts
Electrochemical reduction of metal salts as a method for preparing highly dispersible metal colloids and metal clusters immobilized on substrates by electrochemical reduction of metal salts
The object of the invention is a method for the electrochemical preparation of metal colloids with particle sizes of less than 30 nm, characterized in that one or more metals of groups Ib, IIb, III, IV, V, VI, VIIb, VIII, lanthanoides, and/or actinoides of the periodic table are cathodically reduced in the presence of a stabilizer, optionally with a supporting electrolyte being added, in organic solvents or in solvent mixtures of organic solvents and/or water within a temperature range of between -78 DEG C and +120 DEG C to form metal colloidal solutions or redispersible metal colloid powders, optionally in the presence of inert substrates and/or soluble metal salts of the respective metals. The invention further relates to soluble or redispersible colloids as well as application on substrates and immobilization thereof, in particular for the preparation of catalysts.
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