Hierarchically porous SiO₂/C hollow microspheres: a highly efficient adsorbent for Congo Red removal.

ABSTRACT: Hierarchically porous SiO₂/C hollow microspheres (HPSCHMs) were synthesized by a hydrothermal and NaOH-etching combined route. The adsorption performance of the prepared HPSCHMs was investigated to remove Congo Red (CR) in aqueous solution. The results show that the synthesized composite possesses a hollow microspherical structure with hierarchical pores and a diameter of about 100-200 nm, and its surface area is up to 1154 m² g^-1. This material exhibits a remarkable adsorption performance for CR in solution, and its maximum adsorption amount for CR can reach up to 2512 mg g^-1. It shows faster adsorption and much higher adsorption capacity than the commercial AC and γ-Al₂O₃ samples under the same conditions. The studies of t

SUBMITTER: Wang J 

PROVIDER: S-EPMC9080780 | biostudies-literature | 2018 May

REPOSITORIES: biostudies-literature