Formation of Mesoporous BaSO 4 Microspheres with a Larger Pore Size via Ostwald Ripening at Room Temperature

Mesoporous microspheres with a larger pore size (diameter of pore: ca. 35 nm, Barrett-Emmett-Teller (BET) surface area: 25.6 m/g), the radial arrangement of irregular BaSO4 nanorods, were successfully synthesized by the radiolysis of an aqueous solution of K2S2O8, Ba(NO3)2, and disodium ethylenediaminetetraacetate with an irradiation time of 1000 min (dose… (More)