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Synthesis of Nanocrystalline Alumina Using Egg White
Author(s) -
Dhara Santanu
Publication year - 2005
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2005.00382.x
Subject(s) - nanocrystalline material , ovalbumin , egg white , materials science , chemical engineering , aqueous solution , ionic strength , aluminium nitrate , aluminium , metal , metallurgy , chemistry , nanotechnology , organic chemistry , immune system , immunology , biology , engineering
A new simplified route to prepare nanocrystalline alumina powders is proposed. The method involved the use of freshly extracted egg white (ovalbumin) and aluminum nitrate in an aqueous medium. Changes in ionic strength upon addition of aluminum nitrate resulted in gelation of ovalbumin. The added metal ions were dispersed in the gelled ovalbumin matrix. Heat treatment of the gelled mass resulted in nanosized γ alumina at as low a temperature as 330°C. TEM analysis showed that the particle size ranged from 15 to 80 nm.