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Indian Journal of Chemistry -Section A (IJC-A) >
IJC-A Vol.51A [2012] >
IJC-A Vol.51A(08) [August 2012] >
| Title: | La-doped TiO2 hollow fibers and their photocatalytic activity under UV and visible light |
| Authors: | Yao, Shuhua
Jia, Xueying
Jiao, Lulu
Zhu, Chuang
Shi, Zhongliang |
| Keywords: | Photocatalysts
Titania
Lanthanum doping
Fiber templates
Photocatalytic activity
Methyl orange |
| Issue Date: | 7-Aug-2012 |
| Abstract: | A
series of La-doped TiO2 photocatalytic material with a hollow fiber
structure has been successfully prepared using La(NO3)3ยท6H2O
and Ti(OC4H9)4 as precursors and cotton fiber as
the template. Scanning electron microscopy, X-ray diffraction, N2
adsorption-desorption measurements, UV-vis diffuse absorption spectra and X-ray
photoelectron spectroscopy have been used to characterize the morphology,
crystal structure, surface structure and optical absorption properties of the
samples. The photocatalytic activity of the samples with varying amounts of
La-doped has been studied by photodegradation of methyl orange in water under
UV and visible light. Results show that La doping restrains the growth of grain
size and extends the photoabsorption edge of TiO2 hollow fiber into
the visible light region. The fiber structured material shows better
photocatalytic properties for the degradation of methyl orange than pure TiO2
under UV and visible light. The amount of La-doping significantly affected the
catalytic property. Under the experiment conditions, the photocatalytic
activity of 0.5 mol% La-doped TiO2 fiber is optimal amongst the
studied samples. The prepared La-doped TiO2 fiber is a low energy
consuming, high activity and green environmental-friendly catalytic material. |
| Page(s): | 1049-1056 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-0975(Online); 0376-4710(Print) |
| Source: | IJC-A Vol.51A(08) [August 2012]
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