Ceria Hollow Spheres As an Adsorbent for Efficient Removal of Acid Dye

Efficient removal of dye pollutants from water is of significant importance for environmental protection; thus, the development of advanced sorbent materials with high adsorption capacity is highly desirable. Herein, we report a large-scale synthesis of ceria hollow spheres (CHS) derived from the sol–gel reaction of cerium nitrate on polymeric templates. The obtained CHS have efficient adsorption performance to acid black 210 (AB 210), with a maximum adsorption capacity of 175.75 mg g–1, which is considerably bigger than those of the previously reported ceria-based adsorbents and more than 5 times those of powdered activated carbons (PAC) and ceria nanoparticles (CNP).