Micro-nanostructure manufactured using amorphous nanostructure and manufacturing method therefor

A method for manufacturing metal nanoparticles, the method comprising:

• preparing an amorphous nanostructure in which an inorganic polymer having the following Chemical Formula 1 is hydrogen-bonded;
• mixing the amorphous nanostructure with a second metal precursor comprising a second metal element having a higher standard reduction potential than a central metal of the inorganic polymer;
• and
• forming metal nanoparticles comprising the second metal element on the surface of the amorphous nanostructure.
• in Chemical Formula 1, M represents a transition metal as a central metal, X represents a halogen element, CF represents a bonding functional group comprising a hydrogen element and an element for hydrogen bonding, and n has a value of 10 to 500,000 as a number of repeat units.