Preparation and characterization of mesoporous MO2 (M = Ti, Ce, Zr, and Hf) nanopowders by a modified sol-gel method

作者：Pavasupree S; Suzuki Y; Pivsa Art S; Yoshikawa S^*

来源：Ceramics International, 2005, 31(7): 959-963.

DOI：10.1016/j.ceramint.2004.10.009

• mesoporous oxides
• characterization
• sol-gel
• mild conditions

Mesoporous high surface area and high crystallinity MO2 powders (TiO2, CeO2, ZrO2, and HfO2) were synthesized by a modified sol-gel method using laurylamine hydrochloride, metal alkoxide and acetylacetone. The prepared MO2 powders, characterized by XRD, nitrogen adsorption isotherm, SEM, TEM, and SAED, had crystalline size of about 5-15 nm, specific surface area of 44-80 m(2)/g, and a narrow pore size distribution with average pore diameter of about 3-6 nm. This synthesis method provides a new simple route to fabricate nanostructured materials under mild conditions.

• 出版日期2005