Hydrogen production from the photocatalytic hydrolysis of sodium borohydride in the presence of In–, Sn–, and Sb–TiO2s

다국어 초록 (Multilingual Abstract)

To enhance the evolution of hydrogen from the photocatalytic hydrolysis of sodium borohydride solution, three photocatalysts; 0.5 mol% In,
Sn, and Sb, incorporated into TiO2, were prepared using a hydrothermal method. The particle sizes of well-developed anatase were about 5.0 nm,
except those for Sb–TiO2, which were above 5.0 nm, with closed to cubic form shapes, except for pure TiO2 that was spherical. In the X-ray
photoelectron spectra (XPS) for Ti2p3/2, a band at 460.34 eV, attributed to partial MTiO3, was seen in Sn–TiO2. Additionally, two bands of Sn3d5/2
at 484.5 and 486.8 eV, assigned to the Sn and SnO or SnO2, respectively, appeared over Sn–TiO2, with the ratios of metal–OH/metal–O in the O1s
bands, imply a hydrophilic property, also increased in this compared with the other catalysts. The hydrogen evolution from sodium borohydride
(NaBH4) hydrolysis was enhanced in the Sn–TiO2 photocatalytic system compared to those for the other catalysts; hydrogen was evolved at
140 ml/g h over Sn–TiO2, which was different from the 100 ml/g h for the hydrolysis of pure NaBH4, and increased to 1350 ml/g after 5 h. In
particular, the evolved hydrogen increased with increasing amounts of Sn–TiO2, and the production continued for 150 h.

참고문헌 (Reference)

1 L. Schlapbach, 414 : 353-, 2001

2 Q. Liu, 37 : 2255-, 2002

3 B. Bogdanovic, 253 : 1-, 1997

4 C.M. Kaufman, 2 : 37-, 1985

5 Y. Kojima, 27 : 1029-, 2002

6 D. Hua, 28 : 1095-, 2003

7 N.L. Wu, 163 : 277-, 2004

8 Y. Kojima, 135 : 36-, 2004

9 T. Bak, 27 : 991-, 2002

10 Z. Zou, 148 : 65-, 2002

11 D.W. Hwang, 845 : 93-, 2004

12 T. Ishii, 163 : 181-, 2004

13 T. Sreethawong, 235 : 1-, 2005

14 Misook Kang, Min-Kyu Jeon, Jae-Woo Park, "Hydrogen Production from Methanol/Water Decomposition in a Liquid Photosystem Using the Anatase and Rutile Forms of Cu-TiO2" 한국공업화학회 13 (13): 84-91, 2007

15 Won-Chun Oh, Jong-Yun Park, "Hydrogen Gas Generation of Metal-Activated Carbon for FuelCells" 한국공업화학회 13 (13): 578-584, 2007