Open AccessPreparation and Characterization of Submicron TiO2 Microspheres via Urea-formaldehyde Template
Author(s) -
Sen Lin,
Shiguo Du,
Yanling Lü
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/735/1/012004
Subject(s) - microsphere , characterization (materials science) , formaldehyde , urea formaldehyde , materials science , chemical engineering , urea , nanotechnology , chemistry , organic chemistry , adhesive , layer (electronics) , engineering
In order to obtain sub-micron TiO 2 microspheres with good dispersibility and easy collection, urea-formaldehyde(UF)-TiO 2 hybrid microspheres were synthesized by polymerization-induced precipitation in acidic TiO 2 sol through the reaction of urea and formaldehyde. The hybrid microspheres and their calcined products were analyzed by scanning electron microscopy, laser particle size analyzer, thermogravimetric analyzer and X-ray Powder diffractometer. The results of morphological characterization showed that the UF-TiO 2 hybrid microspheres were spherical and well dispersed, and their particle size ranged from 0.8∼5μm The sub-micron TiO 2 microspheres with large pore volume and good dispersion were obtained by calcining and removing the organic components in the hybrid microspheres. Thermogravimetric analysis showed that the proportion of inorganic components in hybrid microspheres was about 20%. XRD analysis showed that the product of calcined hybrid microspheres was single anatase-type titanium dioxide.