Lanthanide-doped titanium dioxide layers as photocatalysts

被引：39

作者：

Uzunova-Bujnova, M. ^{[1
]}

Todorovska, R. ^{[2
]}

Dimitrov, D. ^{[1
]}

Todorovsky, D. ^{[1
]}

机构：

[1] Univ Sofia, Fac Chem, Dept Gen & Inorgan Chem, Sofia 1164, Bulgaria

[2] Bulgarian Acad Sci, Inst Elect, BU-1784 Sofia, Bulgaria

来源：

APPLIED SURFACE SCIENCE | 2008年 / 254卷 / 22期

关键词：

TiO2; photocatalysis; rare earths; sorption; thin films;

D O I：

10.1016/j.apsusc.2008.05.331

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Films (similar to 0.5 mg/cm(2)) from TiO2 doped with 1-10 mol% Ln(3+) (Ln = La or Gd) are deposited on different types of substrates by spray-pyrolysis using ethylene glycol solutions of Ti4+-Ln(3+) citric complexes as starting material and O-2 as a carrier gas. The films are post-deposition heated at 500 degrees C. Their phase composition, crystal structure, morphology, sorption ability and photocatalytic activity are studied. Aqueous solution of methylene blue is applied as a model pollutant. A film with 5 mol% La on Ti-coated stainless steel substrate shows significantly higher photocatalytic activity than the best performing samples produced from commercially available titania. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：7296 / 7302

页数：7

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