Highly ordered mesoporous bioactive glass with high surface areas using H3PO4 as the catalyst

Mesoporous bioactive glass (MBG) was obtained by the evaporation-induced self-assembly method which uses H3PO4 as catalyst and nonionic block copolymer (EO20PO70EO20, P123) as templates, respectively. Its average pore diameter, specific area and pore volume were 3.6 nm, 476.7 m2g− 1 and 0.49 cm3g− 1. The structure and performance were characterized by small-angle X-ray diffraction (SAXRD), nitrogen adsorption-desorption isotherms and transmission electron micrographs (TEM). The results demonstrated that using H3PO4 as catalyst is useful to prepare MBG with larger surface area and highly ordered mesopore. In vitro bioactivity test suggested that this MBG exhibited an excellent formation of hydroxyl-carbonated apatite layer.