METHOD FOR PREPARING PHOTOCATALYST, AND PHOTOCATALYST PREPARED THEREBY

摘要

Provided is a method for preparing a photocatalyst, comprising the steps of: preparing a first porous metal oxide film formed from a first metal oxide by a sol-gel method; crystallizing the first metal oxide by heat treating the first porous metal oxide film; allowing ions of a second metal to penetrate into the inner pores of the first porous metal oxide film by dipping the first porous metal oxide film into a precursor solution of the second metal and irradiating light at the first porous metal oxide film; and forming particles of the second metal in the inner pores of the first porous metal oxide film through the reduction of the ions of the second metal by dipping the first porous metal oxide film, which contains the ions of the second metal in the inner pores, into an alcohol solution and irradiating light at the first porous metal oxide film.