文档介绍：Fabrication of TiO2 hollow spheres using yeast as
bio-templates and their photocatalytic performance
for the degradation of CBW wastewater
Chen Ying, Wang Cuifang, Bai Bo, Yang Li
Institute of Environmental Science and Engineering
Chang’an University, 710054
Xi’an, . China
E-mail address: cy0818cy@
Abstract—Hollow spheres of anatase TiO2 have been prepared by Titanium dioxide (TiO2), due to its broad functionality,
using titanate butyl as titanium source and yeast as templates long-term stability and nontoxicity, has been used in many
based on the surface bio-functionality of the anism, in areas, such as photocatalysis, photovoltaic cells, gas sensors,
which the yeast templates were calcinated to remove photonic crystals, photo-electrochemical conversion and
subsequently at 500 oC. The products are characterized by
biomaterials, etc. Generally, the shape and size of TiO2 have a
scanning electron microscopy (SEM), X-ray powder diffraction significant influence on its electrical, optical and catalytic
(XRD) and Fourier transform infrared spectrum (FT-IR). The properties. Thus, preparation of titania materials with ordered
results indicate that the formed TiO2 hollow spheres have a morphologies is a greatly desirable work. Up to now, a series of
regular spherical morphology with a diameter range from to templates, for insta