The invention discloses
metal aerogel with a high specific surface area and a preparation method thereof. The method comprises the steps that (1)
cellulose aerogel is placed in a sensitizing solution to be soaked and then is washed with water; (2) the treated
cellulose aerogel is soaked in a
metal chemical plating solution for
chemical plating, and
metal /
cellulose composite aerogel is obtained; (3) the metal / cellulose composite aerogel is placed in a LiOH /
urea solution, the process of removing a cellulose aerogel template is conducted at a low temperature, and a nanometer
porous metal solution is obtained; and (4) the prepared nanometer
porous metal solution is washed with water, then is subjected to
solvent exchange with
acetone and is dried, and the metal aerogel with the high specific surface area is obtained. The method adopting the cellulose aerogel as the template for preparing the metal aerogel with the high specific surface area is provided for the first time. The cellulose aerogel has a high specific surface area and is of a pore structure suitable for
chemical plating. Meanwhile, the template is easy to remove after the chemical plating, and reference is provided for preparation of metal aerogel with other templates.