Hitachi Chemical Company, Ltd.

Tatsuo Kaneko

Hiroshi Kawazoe

Maiko Kaneko

The method of the present invention includes a step (i) in which a voltage is applied between first and second electrodesandso that the first electrode serves as a cathode, with the first and second electrodesandbeing placed in contact with a material that allows ions to move therethrough. The material includes an adsorbent (gel) containing a macromolecule that has adsorbed a metal ion. The macromolecule contains the same constitutional units as those contained in a macromolecule extracted from Aphanothece sacrum. The first electrodeis placed in contact with the adsorbent in step (i). The metal is deposited on a surface of the first electrodeby applying the voltage in step (i).

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Ishikawa, Japan

Tatsuo Kaneko