Details
| Original language | English |
|---|---|
| Pages (from-to) | 24695-24703 |
| Number of pages | 9 |
| Journal | Journal of Physical Chemistry C |
| Volume | 119 |
| Issue number | 44 |
| Publication status | Published - 5 Nov 2015 |
Abstract
A set of Al-doped titania x-Al-TiO 2 (x = 0.0, 0.1, 0.3, 0.5, 0.7, 0.9, 1.1 wt % Al) has been synthesized by a sol-gel method and tested in the reaction of the photocatalytic degradation of phenol in aqueous suspension. XRD and Raman studies show that the TiO 2 samples have a mixed-phase rutile-anatase crystalline structure with linear increase of the anatase fraction from 0.0 wt % for 0.0-Al-TiO 2 up to 18 wt % for 1.1-Al-TiO 2. A decrease of the particle size from ∼800 to 50 nm and an increase of the specific surface area from 1.7 m 2/g up to 28 m 2/g with increased content of Al have been observed. The data of XRD, XPS, Raman spectroscopy, and EDS techniques show rather homogeneous aluminum distribution with only the Al(3+) oxidation state of aluminum incorporated in the TiO 2 lattice. The bandgap energy E g = (2.93 ± 0.1) eV corresponding to indirect allowed transitions does not depend on the aluminum content within the 0.0-1.1 wt % Al concentration range. The photocatalytic testing of Al-doped TiO 2 samples in the reaction of phenol degradation shows the existence of a maximal initial rate of phenol degradation at an Al concentration of about 0.5 wt %.
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Energy(all)
- General Energy
- Chemistry(all)
- Physical and Theoretical Chemistry
- Materials Science(all)
- Surfaces, Coatings and Films
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In: Journal of Physical Chemistry C, Vol. 119, No. 44, 05.11.2015, p. 24695-24703.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Influence of the Dopant Concentration on the Photocatalytic Activity
T2 - Al-Doped TiO2
AU - Murashkina, A.A.
AU - Murzin, P.D.
AU - Rudakova, A.V.
AU - Ryabchuk, V.K.
AU - Emeline, A.V.
AU - Bahnemann, D.W.
N1 - Publisher Copyright: © 2015 American Chemical Society. Copyright: Copyright 2015 Elsevier B.V., All rights reserved.
PY - 2015/11/5
Y1 - 2015/11/5
N2 - A set of Al-doped titania x-Al-TiO 2 (x = 0.0, 0.1, 0.3, 0.5, 0.7, 0.9, 1.1 wt % Al) has been synthesized by a sol-gel method and tested in the reaction of the photocatalytic degradation of phenol in aqueous suspension. XRD and Raman studies show that the TiO 2 samples have a mixed-phase rutile-anatase crystalline structure with linear increase of the anatase fraction from 0.0 wt % for 0.0-Al-TiO 2 up to 18 wt % for 1.1-Al-TiO 2. A decrease of the particle size from ∼800 to 50 nm and an increase of the specific surface area from 1.7 m 2/g up to 28 m 2/g with increased content of Al have been observed. The data of XRD, XPS, Raman spectroscopy, and EDS techniques show rather homogeneous aluminum distribution with only the Al(3+) oxidation state of aluminum incorporated in the TiO 2 lattice. The bandgap energy E g = (2.93 ± 0.1) eV corresponding to indirect allowed transitions does not depend on the aluminum content within the 0.0-1.1 wt % Al concentration range. The photocatalytic testing of Al-doped TiO 2 samples in the reaction of phenol degradation shows the existence of a maximal initial rate of phenol degradation at an Al concentration of about 0.5 wt %.
AB - A set of Al-doped titania x-Al-TiO 2 (x = 0.0, 0.1, 0.3, 0.5, 0.7, 0.9, 1.1 wt % Al) has been synthesized by a sol-gel method and tested in the reaction of the photocatalytic degradation of phenol in aqueous suspension. XRD and Raman studies show that the TiO 2 samples have a mixed-phase rutile-anatase crystalline structure with linear increase of the anatase fraction from 0.0 wt % for 0.0-Al-TiO 2 up to 18 wt % for 1.1-Al-TiO 2. A decrease of the particle size from ∼800 to 50 nm and an increase of the specific surface area from 1.7 m 2/g up to 28 m 2/g with increased content of Al have been observed. The data of XRD, XPS, Raman spectroscopy, and EDS techniques show rather homogeneous aluminum distribution with only the Al(3+) oxidation state of aluminum incorporated in the TiO 2 lattice. The bandgap energy E g = (2.93 ± 0.1) eV corresponding to indirect allowed transitions does not depend on the aluminum content within the 0.0-1.1 wt % Al concentration range. The photocatalytic testing of Al-doped TiO 2 samples in the reaction of phenol degradation shows the existence of a maximal initial rate of phenol degradation at an Al concentration of about 0.5 wt %.
UR - http://www.scopus.com/inward/record.url?scp=84946601334&partnerID=8YFLogxK
U2 - 10.1021/acs.jpcc.5b06252
DO - 10.1021/acs.jpcc.5b06252
M3 - Article
VL - 119
SP - 24695
EP - 24703
JO - Journal of Physical Chemistry C
JF - Journal of Physical Chemistry C
SN - 1932-7447
IS - 44
ER -