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Low‐Temperature Synthesis of γ‐Alumina Nanocrystals from Aluminum Acetylacetonate in Nonaqueous Media
Author(s) -
Zhou Shuxue,
Antonietti Markus,
Niederberger Markus
Publication year - 2007
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.200700027
Subject(s) - calcination , anhydrous , materials science , aluminium , aqueous solution , inorganic chemistry , nanocrystal , oxide , chemical engineering , aluminum oxide , benzylamine , organic chemistry , catalysis , chemistry , nanotechnology , metallurgy , engineering
Cooler without water : γ‐Alumina has been synthesized at 200 °C in benzylamine and at 160 °C in dimethyl sulfoxide using aluminum acetylacetonate as the precursor, the lowest temperature that such materials have been prepared. In contrast to aqueous sol–gel process with aluminum oxide precursors, where aluminum (oxy)hydroxides are first formed and subsequent calcination is required, the use of anhydrous organic solvents directly yields γ‐alumina nanocrystals without further calcination (see TEM image).