Preparation of novel nanometer TiO2 catalyst doped with upconversion luminescence agent and investigation on degradation of acid red B dye using visible light

Abstract An unreported nanometer TiO2 photocatalyst doped with upconversion luminescence agent (40CdF2 · 60BaF2 · 0.8Er2O3) utilizing visible light was prepared. Its photocatalytic activity was checked through the photocatalytic degradation of acid red B as a model compound under visible light irradiation. Results show that the upconversion luminescence agent prepared as dopant can effectively turn visible lights to ultraviolet lights, which can be absorbed by nanometer TiO2 particles to produce the electron-cavity pairs. Therefore, the photocatalytic ability of this novel TiO2 photocatalyst has greatly been enhanced compared with undoped and common TiO2 photocatalyst.

[1]  S. Schwarz,et al.  Trimethylsilylation of ordered and disordered titanosilicates: improvements in epoxidation with aqueous H2O2 from micro- to meso-pores and beyond† , 1999 .

[2]  P. Wong,et al.  Degradation of azo dye Procion Red MX-5B by photocatalytic oxidation. , 2002, Chemosphere.

[3]  P. Kamat.  PHOTOCHEMISTRY ON NONREACTIVE AND REACTIVE (SEMICONDUCTOR) SURFACES , 1993 .

[4]  W. Ho,et al.  Preparation of highly photocatalytic active nano-sized TiO2 particles via ultrasonic irradiation. , 2001, Chemical communications.

[5]  K. Hadjiivanov,et al.  Surface chemistry of titania (anatase) and titania-supported catalysts , 1996 .

[6]  Quan Li,et al.  Microemulsion-mediated solvothermal synthesis of nanosized CdS-sensitized TiO2 crystalline photocatalystElectronic supplementary information (ESI) available: UV-visible absorption spectra, XRD patterns and EPR spectrum. See http://www.rsc.org/suppdata/cc/b3/b302418k/ , 2003 .

[7]  Huailiang Xu,et al.  Luminescence characteristics of ultraviolet upconversion from Er3 +:YAG crystal by Ar+ laser (488 nm) excitation , 2001 .

[8]  A. Heller.  Chemistry and Applications of Photocatalytic Oxidation of Thin Organic Films , 1996 .

[9]  K. Takanabe,et al.  Influence of the phase composition of titania on catalytic behavior of Co/TiO2 for the dry reforming of methane. , 2002, Chemical communications.

[10]  S. K. Nash-Stevenson,et al.  Diode-Pumped Violet Energy Upconversion in BaF(2):Er(3+). , 1998, Applied optics.

[11]  R. Caruso,et al.  Inorganic Macroporous Films from Preformed Nanoparticles and Membrane Templates: Synthesis and Investigation of Photocatalytic and Photoelectrochemical Properties , 2003 .

[12]  J. Yates,et al.  Photocatalysis on TiO2 Surfaces: Principles, Mechanisms, and Selected Results , 1995 .

[13]  H. Yoshida,et al.  Hydrogen peroxide improving crystallinity of TiO2 nanoparticle in layer compound , 2004 .

[14]  M. Miyauchi,et al.  N-doped TiO2 Nanotube with Visible Light Activity , 2004 .

[15]  Ulrike Diebold,et al.  The surface science of titanium dioxide , 2003 .

[16]  R. Asahi,et al.  Visible-Light Photocatalysis in Nitrogen-Doped Titanium Oxides , 2001, Science.

[17]  G. Bond,et al.  The influence of metal loading and pH during preparation on the CO oxidation activity of Au/TiO2 catalysts. , 2004, Chemical communications.

[18]  J. Herrmann,et al.  Photocatalytic degradation pathway of methylene blue in water , 2001 .