Enhanced carbon doping of n-TiO2 thin films for photoelectrochemical water splitting

被引：93

作者：

Xu, Chengkun

Killmeyer, Richard

Gray, McMahan L.

Khan, Shahed U. M. ^{[1
]}

机构：

[1] Duquesne Univ, Dept Chem & Biochem, Pittsburgh, PA 15282 USA

[2] Natl Energy Technol Ctr, Pittsburgh, PA 15236 USA

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2006年 / 8卷 / 10期

关键词：

photocatalysis; photoelectrochemical production of hydrogen; photoresponse; titanium dioxide; carbon doping;

D O I：

10.1016/j.elecom.2006.07.018

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Enhanced carbon doped n-TiO2 films were synthesized by spray pyrolysis of glucose containing TiCl4 ethanolic solution followed by calcination. Argon was found to be the most effective calcining ambient to enhance the carbon doping of n-TiO2 films. The resultant carbon modified n-TiO2 thin film calcined in Ar at the optimum temperature of 973 K contains 3.8 at% carbon and shows higher photoresponse in both UV and visible region compared to that calcined in air at the optimum temperature of 773 K that contains 2.3 at% carbon. The carbon modified n-TiO2 thin films are stable in the strongly oxidizing environment under illumination. (c) 2006 Elsevier B.V. All rights reserved.

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页码：1650 / 1654

页数：5

相关论文

共 22 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] Photo-electrochemical hydrogen generation from water using solar energy. Materials-related aspects [J].

Bak, T ;

Nowotny, J ;

Rekas, M ;

Sorrell, CC .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2002, 27 (10) :991-1022

[3] Nanostructured TiO2 films with 2 eV optical gaps [J].

Barborini, E ;

Conti, AM ;

Kholmanov, I ;

Piseri, P ;

Podestà, A ;

Milani, P ;

Cepek, C ;

Sakho, O ;

Macovez, R ;

Sancrotti, M .

ADVANCED MATERIALS, 2005, 17 (15) :1842-+

[4] THE ROLE OF METAL-ION DOPANTS IN QUANTUM-SIZED TIO2 - CORRELATION BETWEEN PHOTOREACTIVITY AND CHARGE-CARRIER RECOMBINATION DYNAMICS [J].

CHOI, WY ;

TERMIN, A ;

HOFFMANN, MR .

JOURNAL OF PHYSICAL CHEMISTRY, 1994, 98 (51) :13669-13679

[5] Fabrication and characterization of C-doped anatase TiO2 photocatalysts [J].

Choi, Y ;

Umebayashi, T ;

Yoshikawa, M .

JOURNAL OF MATERIALS SCIENCE, 2004, 39 (05) :1837-1839

[6] Theory of carbon doping of titanium dioxide [J].

Di Valentin, C ;

Pacchioni, G ;

Selloni, A .

CHEMISTRY OF MATERIALS, 2005, 17 (26) :6656-6665

[7] Photoresponse of p-type zinc-doped iron(III) oxide thin films [J].

Ingler, WB ;

Baltrus, JP ;

Khan, SUM .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2004, 126 (33) :10238-10239

[8] Carbon-doped anatase TiO2 powders as a visible-light sensitive photocatalyst [J].

Irie, H ;

Watanabe, Y ;

Hashimoto, K .

CHEMISTRY LETTERS, 2003, 32 (08) :772-773

[9] Theoretical study of the structure and optical properties of carbon-doped rutile and anatase titanium oxides [J].

Kamisaka, H ;

Adachi, T ;

Yamashita, K .

JOURNAL OF CHEMICAL PHYSICS, 2005, 123 (08)

[10] Efficient photochemical water splitting by a chemically modified n-TiO2 2 [J].

Khan, SUM ;

Al-Shahry, M ;

Ingler, WB .

SCIENCE, 2002, 297 (5590) :2243-2245