The invention discloses a three-dimensional structure constructed by using
graphene as base units and a preparation method thereof. The
graphene three-dimensional structure is formed by stacking and assembling
graphene, the shape of the graphene three-dimensional structure is a similar cylinder or a polygonal
prism, and the volume of the graphene three-dimensional structure is 0.1-100cm<3>. The graphene three-dimensional structure can contain water,
methanol,
ethanol, glycol and mixture molecules thereof, and can contain Li<+>, Na<+>, K<+>, Ag<+>, Ca<2+>, Ba<2+>, Mg<2+>, Ni<2+>, Co<2+>, Cu<2+>, Mn<2+>, Cd<2+>, Zn<2+>, Pb<2+>, Pt<2+>, Pd<2+>, Rh<2+>, Al<3+>, Fe<3+>, Au<3+>, Ru<3+> and Pt<4+>
metal ions. The graphene three-dimensional structure has rich network space which can be used for filling Ni, Co, Cu, Mn, Fe, Au, Ag, Pt and Ru as well as
alloy nanoparticles thereof, can be used for filling
polypyrrole,
polyaniline,
polyacrylic acid,
polythiophene,
polyacrylamide and
polyvinyl alcohol polymers, and can be used for filling
protein,
amino acid,
sugar and
enzyme biological molecules.