文档介绍：Effects of Zn2+ and Eu3+ co-doping on photocatalytic
activity of TiO2
Yi Zhou, Mingming Dang, Caixia Lv, Hong Li, Dehui Shi
College of chemical and biological engineering
Changsha University of Science and Technology
Changsha, China
zhouyihn@, dangmm1985@, lvcaixiaflying@, f22450@, shidehui0@
2+ 3+
Abstract—A series of Zn and Eu co-doped TiO2 catalysts were metal ions into nanocrystalline TiO2, there are only a few
prepared by a modified sol-gel method. The prepared catalysts reports and discussion. Here, we present the study of
2+
were characterized by X-ray diffraction (XRD), transmission photodegradation of methyl orange by TiO2 co-doped with Zn
electron microscopy(TEM) and ultraviolet-visible diffuse and Eu3+. The synergistic effect of two dopants leads to
reflection spectroscopy(UV-vis DRS). Characteristic results
2+ 3+ significant enhancement of photodegradation. We also discuss
clearly show that all of Zn and Eu co-doped TiO2 samples the factors influencing photoreactivity of co-doped
exclusively consist of primary anatase crystallites, the co-doping
nanocrystalline TiO2.
can retard the grain growth of TiO2 and decrease the aggregation
2+ 3+
of TiO2 nanoparticles. Zn and Eu co-doping increased the
XPERIMENTAL DETAIL
visible-light absorption ability of TiO2 catalysts and a red shift II. E
appeared pared to pure