Ceria nanocomposite comprising ceria nanoparticle for treating subarachnoid hemorrhage, method for preparing same, and pharmaceutical composition

A method of preparing a ceria nanocomposite for eating subarachnoid hemorrhage, the method comprising:

• preparing a mixed solution containing a cerium precursor, a polyfunctional dispersion stabilizer, and a first solvent;
• heating the mixed solution to prepare a ceria nanoparticle in which the polyfunctional dispersion stabilizer is attached to a surface of the ceria nanoparticle;
• and
• mixing the ceria nanoparticle with a polyethylene glycol derivative in a second solvent such that the polyfunctional dispersion stabilizer and the polyethylene glycol derivative are combined together and a ceria nanocomposite is thereby prepared.