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Synthesis of Al 2 O 3 –CeO 2 Mixed Oxide Nano‐Powders
Author(s) -
Bose Susmita,
Wu Yujie
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.1551-2916.2005.00378.x
Subject(s) - materials science , transmission electron microscopy , amorphous solid , particle size , chemical engineering , phase (matter) , scanning electron microscope , oxide , specific surface area , morphology (biology) , selected area diffraction , ceramic , bet theory , particle (ecology) , metal , nano , nanoparticle , composite number , nanotechnology , crystallography , metallurgy , composite material , chemistry , catalysis , biology , geology , engineering , genetics , biochemistry , oceanography , organic chemistry
Ceria (CeO 2 )‐doped alumina (Al 2 O 3 ) composite nano‐particles were synthesized using sucrose as a chelating agent and template material. As‐synthesized powders were characterized using X‐ray diffraction technique for their phase analysis, BET surface area analyzer for specific average surface area, and transmission electron microscope for particle size and morphology. Both CeO 2 and Al 2 O 3 delayed the amorphous to crystalline phase transformation for each other. These composite nano‐powders had particle size in the range of 20–50 nm with an aspect ratio of 1.5 with platelet morphology and surface area between 100 and 300 m 2 /g. Synthesis parameters were optimized varying the sucrose to metal ion ratio, calcinations time and temperature. This method can be applied to synthesize various monolithic and mixed metal oxide based ceramic nano‐particles.