Preparation and characterization of nano-bioactive-glasses (NBG) by a quick alkali-mediated sol-gel method

Nano-bioactive-glasses have been prepared by a quick alkali-mediated sol-gel method. The gelation time was around 2 min. The size of bioactive glasses could be controlled via addition of ammonia solution. The TEM images showed that the NBG particles size were 20-40 nm using 1 M ammonia solutions. TG-DSC curves indicated that the organic and inorganic precursors have been decomposed completely before 550 degrees C. WAXRD pattern of NBG calcined at 600 degrees C in air confirmed that the calcined glass generally existed in amorphous state. (c) 2006 Elsevier B.V. All rights reserved.