Synthesis of Barium Ferrite for Visible Light Photocatalysis Applications

被引：20

作者：

Borse, P. H. ^{[1
]}

Cho, C. R. ^{[2
]}

Lim, K. T. ^{[3
]}

Lee, Y. J. ^{[4
,5
]}

Hong, T. E. ^{[4
,5
]}

Bae, J. S. ^{[4
,5
]}

Jeong, E. D. ^{[4
,5
]}

Kim, H. J. ^{[4
,5
]}

Kim, H. G. ^{[4
,5
]}

机构：

[1] Int Adv Res Ctr Powder Met & New Mat ARC Int, Ctr Nanomat, Hyderabad 500005, AP, India

[2] Pusan Natl Univ, Dept Nano Fus Technol, Miryang 627706, South Korea

[3] Pukyong Natl Univ, Dept Imaging Syst Engn, Pusan 609735, South Korea

[4] Korea Basic Sci Inst, Pusan 609735, South Korea

[5] Korea Basic Sci Inst, Taejon 305333, South Korea

来源：

JOURNAL OF THE KOREAN PHYSICAL SOCIETY | 2011年 / 58卷 / 06期

关键词：

BaFe2O4; Solid state reaction; Visible light; Photocatalytic activity; Photodegradation; HYDROGEN-PRODUCTION; WATER; WORKING;

D O I：

10.3938/jkps.58.1672

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Orthorhombic phase BaFe2O4 powder was synthesized by using a solid state reaction method and investigated for its visible light photocatalytic properties. The crystallization of the structural phase was found to occur at a temperature above 1000 degrees C yielding a pure orthorhombic phase BaFe2O4 (SG- B b21m) at 1100 degrees C. The estimated band gap, as determined by UV-Vis diffuse reflectance studies, was similar to 1.9 eV (652 nm). A new material was designed and fabricated as Pt/RuO2/BaFe2O4 to enhance its photocatalytic activity. A very low (<1 wt% RuO2) co-catalyst doping over BaFe2O4 was important for achieving high photocatalytic efficiency. The newly designed system was investigated for photo-decomposition of isopropyl alcohol (IPA) and of water under visible light (>= 420 nm). Its photocatalytic activity was significantly higher than that of platinized TiO2-xNx. A mechanism has been proposed to explain the photocatalytic behavior of the designed BaFe2O4 photocatalyst.

引用

页码：1672 / 1676

页数：5

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