文档介绍：N-doped trititanate nanotubes: preparation,
characterization and visible-light
sensitivity

Haijin Liua, Guoguang Liua,b*, Minli Zhanga, Zehua Houa, Zhanwei Hea
aSchool of Chemistry and Environmental Science, Henan bFaculty of Environmental Science and Engineering,
Normal University Guangdong University of Technology
Xinxiang 453007, P. R. China Guangzhou 510006, P. R. China
e-mail: lhj671@ e-mail: guoguangliu@

Abstract--Trititanate nanotubes were prepared by hydrothermal by hydrothermal method have high cation exchange ability for
method and N was introduced into the nanotubes by the H+ existed between the layers of the nanotubes [10]. Some
ion-exchanging. They were characterized with X-ray alkali metal [11] and transitional metal ions [12, 13] can be
photoelectron spectra (XPS), high-resolution transmission introduced into the nanotubes through ion-exchange for the
electronmicroscopy (HRTEM), X-ray diffraction (XRD) and H+ and enhanced photocatalytic activities have been found.
UV-Vis diffusion reflection spectroscopy (UV–Vis DRS). The Noble metals have also been immobilized on the surface of
photocatalytic activities were investigated with Rhodamine B as the titanate nanotubes by ion-exchange and post reduction
the model pollutant. The results indicated that N-doping process [10].
enhanced the photocatalytic efficiency of TiO2 in visibl