Hydrogen production using mesoporous titanium dioxide

Abstract

Mesoporous C/N doped TiO₂ (MCNT) samples were prepared, and Pt was deposited on their surfaces. The hydrogen production capability of this material was investigated by irradiating it with UV light at two different wavelengths. It was found that MCNT could be used to produce hydrogen gas. The highest hydrogen production rate was obtained when 0·003 mol Pt was deposited on the surface of 1 mol MCNT. Since this optimal Pt concentration is the same as that for P-25, it was concluded that the mesopore surface was not directly deposited with Pt. More hydrogen was produced when Pt deposited MCNT was irradiated with 350 nm wavelength UV light than with 370 nm wavelength UV light at similar intensity. This implies that the wavelength of UV light strongly affects hydrogen production.

Keywords

Hydrogen production UV irradiation Pt deposition Titanium dioxide

Get full access to this article

View all access options for this article.

References

http://www.bp.com/genericarticle.do?categoryId = 2012968&contentId = 7033260; http://www.coaltransinternational.com/htm/w20081114·344301.htm (accessed on 1 June 2009 and 24 November 2011).

http://www.abc.net.au/news/stories/2009/01/19/2468820.htm?section = business (accessed on 1 June 2009 and 24 November 2011).

Fujishima

and Honda

: Electrochemical photolysis of water at a semiconductor electrode, Nature, 1972, 238, 37–38.

Fujishima

, Xhang

and Tryk

D. A.

: ”TiO2 photocatalysis and related surface phenomena,„ Surf. Sci. Rep., 2008, 63, 515–582.

Nowotny

, Bak

, Nowotny

M. K.

and Sheppard

L. R.

: ”Titanium dioxide for solar-hydrogen I. Functional properties,„ Int. J. Hydrogen Energy, 2007, 32, 2609–2629.

Hermann

J.-M

, Disdier

and Pichat

: Effect of chromium doping on the electrical and catalytic properties of powder titania under UV and visible illumination, Chem. Phys. Lett., 1984, 108, 618–622.

Anpo

, Ichihashi

, Takeuchi

and Yamashita

: Design of unique titanium oxide photocatalysts by an advanced metal ion-implantation method and photocatalytic reactions under visible light irradiation, Res. Chem. Intermed., 1998, 24, 143–149.

Asahi

, Morikawa

, Ohwaki

, Aoki

and Taga

: Visible-light photocatalysis in nitrogen-doped titanium oxides, Science, 2001, 293, 269–271.

Khan

S. U. M.

, Al-Shahry

and Ingler

W. B.

Jr : Efficient photochemical water splitting by a chemically modified n-TiO2, Science, 2002, 297, 2243–2245.

10.

Anandan

, Ikuma

, Kakinuma

and Niwa

: ”Synthesis and characterization of a highly crystalline novel mesoporous C- and N-codoped TiO2 nanophotocatalyst,„ NANO, 2008, 3, 367–372.

11.

Zhao

, Huo

, Feng

, Chmelka

B. F.

and Stucky

G. D.

: Nonionic triblock and star diblock copolymer and oligomeric surfactant syntheses of highly ordered, hydrothermally stable, mesoporous silica structures, J. Am. Chem. Soc., 1998, 120, 6024–6036.

12.

Miyauchi,Fukushima,AnandanNiwa

YHS, K

and Ikuma

: Synthesis and characterization of mesoporous TiO2, Res. Rep. Kanagawa Inst. Tech., 2011, B-35, 23–25.

13.

Brunauer

, Emmett

P. H.

and Teller

: ”Adsorption of gases in multimolecular layers,„ J. Am. Chem. Soc., 1938, 60, 309–319.

14.

Barrett

E. P.

, Joyner

L. G.

and Halenda

P. P.

: The determination of pore volume and area distributions in porous substances, J. Am. Chem. Soc., 1951, 73, 373–380.

15.

Ikuma

and Bessho

: Effect of Pt concentration on the production of hydrogen by a TiO2 photocatalyst, Int. J. Hydrogen Energy, 2007, 32, 2689–2692.