New Reactor Fabricated Using Light Leakage Fiber for Azo Dye Degradation

Abstract:

Lanthanum-doped anatase TiO₂ coatings, which are composed of assemble crystalline of 50 nm diameter particles, when the percentage of dopant is 0.5 wt%, have been successfully fabricated by solgel dip-coating process on light leakage silica fiber (LSF) which length is 15cm and diameter is 125μm. This was achieved by adjustment of the lanthanum-doped solgel parameters such as molar ratio of precursors in lanthanum-doped TiO₂-sols, the ratio of titanium tetrabutoxide to polyvinyl alcohol, dip-coating velocity, drying duration in air, thermal treatment and number of cyclical time of the process. Titania nanocrystals were prepared at ambient temperature in a liquid media using titanium tetrabutoxide as precursor, and the crystallization of amorphous precursor was preceded by peptizing with acid and then refluxing for a periodic time in homothermal water-bath. The photocatalytic properties of the La-TiO₂ films had been testified by the photo degradation of methyl orange. The lanthanum-doped anatase TiO₂ thin films were characterized by XRD and TEM. The products show much improved photocatalytic activity that will be useful in the design of a novel antibacterial, deodorant and antipollution new photo reactor.

• Periodical: Advanced Materials Research (Volume 716)
• Pages: 235-239
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.716.235
• Online since: July 2013
• Authors: Tao Yu, Hong Mei Wang, Xin Tan
• Keywords: Light Leakage Fiber, Photocatalysis, TiO₂

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