Method for synthesizing porous inorganic oxide nanoparticles, and porous inorganic oxide nanoparticles and spherical porous inorganic oxide nanoparticles produced by the synthesis method

摘要

PROBLEM TO BE SOLVED: To provide an easily-operable method for synthesizing porous inorganic oxide nanoparticles, capable of adjusting easily each particle size or pore size of the porous inorganic oxide nanoparticles according to applications without requiring a long time for synthesis.SOLUTION: A method for synthesizing porous inorganic oxide nanoparticles includes a step of reacting an inorganic compound with a carboxylic acid in a supercritical fluid. In the method for synthesizing porous inorganic oxide nanoparticles, the supercritical fluid is supercritical methanol or supercritical ethanol, the inorganic compound is Ti(OPr), Zr(OPr), ZrO(NO)2HO, Ce(NO)6HO, Fe(NO)9HO, Ni(NO)6HO or Si(OCH), and the carboxylic acid is formic acid, acetic acid or orthophthalic acid.