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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 30, Number 2
BKCSDE 30(2)
February 20, 2009 

Hydrogen Production from Photo Splitting of Water Using the Ga-incorporated TiO2s Prepared by a Solvothermal Method and Their Characteristics
Jinho Chae, Juhyun Lee, Jong Hwa Jeong, Misook Kang*
Ga-incorporated TiO2, Photocatalysis, Water splitting, H2 production
This study investigated the production of hydrogen over Ga (1.0, 2.0, and 5.0 mol%)-TiO2 photocatalysts prepared by a solvothermal method. The absorption band was slightly blue-shifted upon the incorporation of the gallium ions, but the intensity of the photoluminescence (PL) curves of Ga-incorporated TiO2s was distinguishably smaller, with the smallest case being the 2.0 mol% Ga-TiO2, which was related to the recombination between the excited electrons and holes. H2 evolution from photo splitting of water over Ga-incorporated TiO2 in the liquid system was enhanced, compared to that over pure TiO2; particularly, the production of 5.6 mL of H2 gas after 8 h when 1.5 g of the 2.0 mol% Ga-incorporated TiO2 was used.
302 - 308
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