Effect of Microwave Frequency on Hydrothermal Synthesis of Nanocrystalline Tetragonal Barium Titanate

Content Provider	Semantic Scholar
Author	Nyutu, Edward K. Chen, Chun-Hu Dutta, Prabir K. Suib, Steven L.
Copyright Year	2008
Abstract	Nanocrystalline tetragonal barium titanate (BaTiO3) with particle sizes ranging from 30 to 100 nm were synthesized via microwave-hydrothermal routes at various fixed microwave frequencies and also using variable frequency with 1−5 s sweep times. The effects of microwave frequency, microwave bandwidth sweep time, and aging time on the microstructure, particle sizes, phase purity, surface areas, and porosities of the as-prepared BaTiO3 were investigated systematically. The crystallized BaTiO3 powders were characterized by X-ray diffraction, Raman spectroscopy, thermal analysis, infrared spectroscopy, field emission scanning electron microscopy, and transmission electron microscopy with an EDS analyzer. The results show that the particle sizes, morphologies, and surface areas of the products are influenced by the microwave frequency and bandwidth sweep time. High microwave frequency (5.5 GHz) and variable frequency (3−5.5 GHz to 1 s) led to spherical particles with narrow and more uniform particle size distr.
Starting Page	9659
Ending Page	9667
Page Count	9
File Format	PDF HTM / HTML
DOI	10.1021/jp7112818
Volume Number	112
Alternate Webpage(s)	https://cbc-wb01x.chemistry.ohio-state.edu/~dutta/index_files/Recent%20Publications_files/J.Phys.Chem.C_2008,112,9659.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article