Amino-Modified High-Surface-Area Radial-Pore Silica Microspheres for Efficient Perfluorooctanoic Acid Removal

Abstract

We report the synthesis of amino-modified radial-pore silica microspheres with a large particle size of 1.6 μm and a high surface area of 1300 m2 g−1 toward high-efficiently removing PFOA in water, which achieve a maximum adsorption capacity of 775 mg g−1 with a rapid equilibrium within 30 minutes and 88.3% capacity retention after 5 cycles.