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Synthesis of Strontium Titanate Nanometer Crystallites Using a Peroxide‐Based Route
Author(s) -
Wanjun Tang,
Donghua Chen
Publication year - 2007
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/j.1744-7402.2007.02166.x
Subject(s) - strontium titanate , nanocrystalline material , materials science , calcination , crystallite , strontium , thermogravimetry , amorphous solid , perovskite (structure) , hydrogen peroxide , nanoparticle , nanometre , chemical engineering , inorganic chemistry , nuclear chemistry , nanotechnology , catalysis , thin film , metallurgy , crystallography , chemistry , organic chemistry , composite material , engineering
Nanocrystalline strontium titanate (SrTiO 3 ) particles were prepared using a peroxide‐based route. The reaction between hydrogen peroxide and β‐titanic acid yielded a peroxytitanic solution. An amorphous precipitate containing strontium and titanium was formed when a solution of strontium nitrate was added at pH 9. The precipitate was filtered, washed, and calcined. The precipitate was characterized by thermogravimetry, infrared spectroscopy, and X‐ray diffraction. Powder calcined at temperatures of about 750°C within 1 h showed a well‐crystallized cubic SrTiO 3 perovskite phase. Applying this synthesis procedure for SrTiO 3 nanoparticles yields powders with a grain size of nearly 50 nm.