In this work, a kind of nano-TiO2 dispersion solution with excellent dispersity and stability was prepared and its photocatalytic activity was studied. The TiO2 nanoparticles (NPs) with particle size of 30nm were prepared using a combined method of precipitation and solvothermal. The morphology, structure, and surface state of TiO2 NPs were characterized by transmission electron microscope (TEM), scanning electron microscopy (SEM), X-ray powder diffraction (XRD), Fourier transform infrared spectra (FT-IR), and X-ray photoelectron spectroscopy (XPS). The results show that the TiO2 NPs are of anatase type with uniform particle size and good dispersion. Without surface modification, the prepared TiO2 dispersion solution keeps transparent after aged for 180 days at room temperature. Under UV irradiation, the dispersion shows excellent photocatalytic activity on degradation of rhodamine B. The aluminum substrates exhibit good self-cleaning ability after modification by the prepared dispersion.
WU Zhijiao
,
ZHAI Yanqing
,
GUO Rui
,
CAO Baosheng
,
PIAO Lingyu
. Preparation of nano-TiO2 dispersion solution and its photocatalytic activity[J]. Journal of University of Chinese Academy of Sciences, 2018
, 35(6)
: 832
-838
.
DOI: 10.7523/j.issn.2095-6134.2018.06.015
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