Preparation of Nanosized Strontium Titanate Powder by a Nitrilotriacetate Precipitation Method

Wen Bin Yan; Feng Gao; Jun Hua; You Ji Li

doi:10.4028/www.scientific.net/AMR.734-737.2324

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 734-737Preparation of Nanosized Strontium Titanate Powder...

Preparation of Nanosized Strontium Titanate Powder by a Nitrilotriacetate Precipitation Method

Abstract:

A new method that nanoSrTiO₃ electronic ceramics powder was prepared from nitrilotriacetic acid complexes by thermal decomposition was proposed. The reaction of Ti⁴⁺and ta^3-(H₃ta=C₆H₆O₆N) and H₂O₂ is occurred to form [Ti₂O(O₂)₂(ta)₂]^4-complex ions, which react with Sr²⁺ to produce Sr₂[Ti₂O(O₂)₂(ta)₂] precursor, and then is washed, dried and annealed at 900°Cfor 3h to prepare nanoSrTiO₃ powder. The results of SEM analysis show that SrTiO₃ powders were spheric shape with narrow size distribution and the mean particle sizes about 80 nm. XRD investigation show that the powders of SrTiO₃ had the crystalline of the pseudo-cubic structure. The Sr/Ti mole ratio (1.000±0.005) and the purity of 99.8% were confirmed by chemical analysis. Compared with conventional thermal decomposition method of oxalate, the proposed new method, by which the high-quality SrTiO₃ powder is prepared, shows simple technology.

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Periodical:

Advanced Materials Research (Volumes 734-737)

Pages:

2324-2327

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.734-737.2324

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Online since:

August 2013

Authors:

Wen Bin Yan*, Feng Gao, Jun Hua, You Ji Li

Keywords:

Nanopowder, Nitrilotriacetate, Precipitation, Precursor, Strontium Titanate, Thermal Decomposition

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