Synthesis and characterization of copper ions surface-doped titanium dioxide nanotubes

Journal Article · Mon Aug 04 00:00:00 EDT 2008 · Materials Research Bulletin

OSTI ID:21144060

Xuechen, Duan ^[1]; Guocong, Liu ^[1]; Lili, Li ^[1]

---

1. School of Materials Science and Engineering, Central South University, Changsha 410083 (China)

Copper ions surface-doped titanium dioxide nanotubes were prepared via an assembly process based on the reactions between Cu(NH{sub 2}CH{sub 2}CH{sub 2}NH{sub 2}){sub 2}(OH){sub 2} and hydroxide radicals on the surface of TiO{sub 2} nanotubes, followed by the heat treatment in air at 723 K. The as-prepared samples were characterized with infrared spectroscopy (IR), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), X-ray diffraction (XRD), Raman spectroscopy, and fluorescence spectroscopy (FL). The photocatalytic activity of the copper ions surface-doped titanium dioxide nanotubes was investigated by photodegradation of Rhodamine B. The results showed that copper ions were successfully introduced onto the surface of TiO{sub 2} nanotubes. And two kinds of copper species of Cu(I) and Cu(II) were found on TiO{sub 2} surface. Copper ions act as electron trappers facilitating the separation of electrons and holes on the surface of TiO{sub 2} nanotubes, which allows more efficiency for the photodegradation of Rhodamine B.

• OSTI ID: 21144060
• Journal Information: Materials Research Bulletin, Vol. 43, Issue 8-9; Other Information: DOI: 10.1016/j.materresbull.2007.10.005; PII: S0025-5408(07)00454-0; Copyright (c) 2007 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ABSORPTION SPECTROSCOPY
COPPER COMPOUNDS
COPPER IONS
DOPED MATERIALS
ELECTRONS
FLUORESCENCE SPECTROSCOPY
HEAT TREATMENTS
HOLES
HYDROXIDES
INFRARED SPECTRA
NANOTUBES
PHOTOCATALYSIS
RAMAN SPECTROSCOPY
SURFACES
SYNTHESIS
TEMPERATURE RANGE 0400-1000 K
TITANIUM OXIDES
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION
X-RAY PHOTOELECTRON SPECTROSCOPY