Preparation of the inorganic nanomaterials Sm/Ag/TiO2
used as a precursor, anhydrous ethanol was used as a
solvent, and glacial acetic acid was used as an inhibitor
of nitric acid, which was used as a catalyst to adjust the
sol pH value from 2 to 4 to create a uniform, stable, and
transparent TiO2 sol-gel. The molar ratio of Ti(OC4H9)4,
C2H5OH, and H2O was l:12:9. The synthesis of TiO2
nanopowder required magnetic stirring at medium speed.
Then, the inorganic Sm/Ag/TiO2 nanomaterials was
synthesized by mixing the powders of Ag, the rare-earth
Sm, and TiO2 in a muffle furnace (SX2 12-2.5) and then
heating the mixture to different temperatures. Finally, the
supercritical fluid extraction technique was used.