Facile Synthesis of BaTiO3 Nanocubes with the Use of Anatase TiO2 Nanorods as a Precursor to Titanium Hydroxide

Madeline Vara, Miaofang Chi, Younan Xia

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

We report a solvothermal method for the facile and reproducible synthesis of BaTiO3 nanocubes by employing anatase TiO2 nanorods as a precursor to titanium hydroxide. The TiO2 nanorods were, in turn, synthesized in advance through another solvothermal process. We could obtain high-quality BaTiO3 nanocubes by reacting the TiO2 nanorods with Ba(NO3)2 under solvothermal conditions in the presence of oleic acid and acetic acid as dual capping agents, followed by a purification process involving chemical washing and physical filtration. The addition of acetic acid alongside oleic acid was critical to the formation of well-defined {100} facets on the nanocrystals and also increased batch-to-batch reproducibility without the use of a glove box or similar air-free experimental design. Using this method, BaTiO3 nanocubes crystallized in the cubic phase could be readily obtained with an average edge length around 8 nm.

Original languageEnglish
Pages (from-to)873-878
Number of pages6
JournalChemNanoMat
Volume2
Issue number9
DOIs
StatePublished - Sep 2016

Funding

This work was supported in part by a research grant from DARPA (SB131-001) and startup funds from Georgia Institute of Technology. Part of the electron microscopy work was performed through a user project supported by the ORNL’s Center for Nanophase Materials Sciences, which is sponsored by the Scientific User Facilities Division, BES, DOE.

FundersFunder number
ORNL’s Center for Nanophase Materials Sciences
Scientific User Facilities Division
U.S. Department of Energy
Defense Advanced Research Projects AgencySB131-001
Basic Energy Sciences
Georgia Institute of Technology

    Keywords

    • barium titanate
    • ceramics
    • energy storage materials
    • high dielectric constant materials
    • perovskite phases

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