Premium
Facile Synthesis of BaTiO 3 Nanocubes with the Use of Anatase TiO 2 Nanorods as a Precursor to Titanium Hydroxide
Author(s) -
Vara Madeline,
Chi Miaofang,
Xia Younan
Publication year - 2016
Publication title -
chemnanomat
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.947
H-Index - 32
ISSN - 2199-692X
DOI - 10.1002/cnma.201600164
Subject(s) - anatase , titanium , hydroxide , materials science , chemical engineering , inorganic chemistry , chemistry , metallurgy , photocatalysis , catalysis , organic chemistry , engineering
We report a solvothermal method for the facile and reproducible synthesis of BaTiO 3 nanocubes by employing anatase TiO 2 nanorods as a precursor to titanium hydroxide. The TiO 2 nanorods were, in turn, synthesized in advance through another solvothermal process. We could obtain high‐quality BaTiO 3 nanocubes by reacting the TiO 2 nanorods with Ba(NO 3 ) 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, BaTiO 3 nanocubes crystallized in the cubic phase could be readily obtained with an average edge length around 8 nm.