Influence of zinc ferrite doping on the optical properties and phase transformation of titania powders prepared by sol-gel method

被引：18

作者：

Cheng, P ^{[1
]}

Li, W ^{[1
]}

Liu, HZ ^{[1
]}

Gu, MY ^{[1
]}

Shangguah, W ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, State Key Lab MMCs, Shanghai 200030, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2004年 / 386卷 / 1-2期

关键词：

zinc ferrite; titania; phase transformation; optical property;

D O I：

10.1016/j.msea.2004.07.022

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Zinc ferrite-doped TiO2 nanopowders with various amount of zinc ferrite were prepared by sol-gel method. The effect of zinc ferrite doping on the optical properties and on the anatase-to-rutile phase transformation of TiO2 were reported. X-ray diffraction (XRD) results show that zinc ferrite can prevent the transformation of titania from anatase-to-rutile when the content of zinc ferrite is above 0.5 at.%; while the phase transformation is promoted when the content of zinc ferrite is below 0.5 at.%. Diffuse reflectance spectroscopy (DRS) results show that the absorption edge of zinc ferrite-doped TiO2 has moved to the visible spectrum range, and a very large redshift occurs with increasing the amount of zinc ferrite in comparison with the undopd titania. The proposed mechanisms for the large redshift are discussed. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：43 / 47

页数：5

共 27 条

[1] Visible-light photocatalysis in nitrogen-doped titanium oxides [J].

Asahi, R ;

Morikawa, T ;

Ohwaki, T ;

Aoki, K ;

Taga, Y .

SCIENCE, 2001, 293 (5528) :269-271

[2]

BAHNEMANN D, 1994, AQUATIC AND SURFACE PHOTOCHEMISTRY, P261

[3] THE DISSOCIATIVE ADSORPTION OF HYDROGEN-SULFIDE OVER NANOPHASE TITANIUM-DIOXIDE [J].

BECK, DD ;

SIEGEL, RW .

JOURNAL OF MATERIALS RESEARCH, 1992, 7 (10) :2840-2845

[4] PHOTOCATALYTIC DECOMPOSITION OF CRUDE-OIL SLICKS USING TIO2 ON A FLOATING SUBSTRATE [J].

BERRY, RJ ;

MUELLER, MR .

MICROCHEMICAL JOURNAL, 1994, 50 (01) :28-32

[5] Hydrogen photoproduction from hydrogen sulfide on Bi2S3 catalyst [J].

Bessekhouad, Y ;

Mohammedi, M ;

Trari, M .

SOLAR ENERGY MATERIALS AND SOLAR CELLS, 2002, 73 (03) :339-350

[6] PHYSICAL AND CHEMICAL CHARACTERIZATION OF SURFACE VANADIUM-OXIDE SUPPORTED ON TITANIA - INFLUENCE OF THE TITANIA PHASE (ANATASE, RUTILE, BROOKITE AND B) [J].

DEO, G ;

TUREK, AM ;

WACHS, IE ;

MACHEJ, T ;

HABER, J ;

DAS, N ;

ECKERT, H ;

HIRT, AM .

APPLIED CATALYSIS A-GENERAL, 1992, 91 (01) :27-42

[7] Synthesis and microstructure control of nanocrystalline titania powders via a sol-gel process [J].

Ding, XZ ;

Liu, XH .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1997, 224 (1-2) :210-215

[8]

DING XZ, 1995, THESIS CHINESE ACAD, P53

[9] Synergistic photocatalysis mediated by TiO2:: mutual rate enhancement in the photoreduction of Cr(VI) and Cu(II) in aqueous media [J].

Goeringer, S ;

Chenthamarakshan, CR ;

Rajeshwar, K .

ELECTROCHEMISTRY COMMUNICATIONS, 2001, 3 (06) :290-292

[10] Effect of the ligand structure on the efficiency of electron injection from excited Ru-phenanthroline complexes to nanocrystalline TiO2 films [J].

Hara, K ;

Horiuchi, H ;

Katoh, R ;

Singh, LP ;

Sugihara, H ;

Sayama, K ;

Murata, S ;

Tachiya, M ;

Arakawa, H .

JOURNAL OF PHYSICAL CHEMISTRY B, 2002, 106 (02) :374-379

← 1 2 3 →