Abstract
Super-microporous nanocrystalline zirconia (pore size 1–2nm) was synthesized via the evaporation-induced self assembly (EISA) process with solid–liquid method. The acidic etching process of zirconia resulted in the formation of microporous material with surface area of 414m2/g in comparison with that of 141m2/g for the parent material when treated at 400°C. Even after calcination at 700°C, the pore structure was fairly preserved for the post-treated samples and the material still exhibited a high surface area of 223m2/g. However, for samples without post-treatment, their pore walls collapsed totally and surface area decreased drastically when calcinated at 550°C.
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