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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 31, Number 4
BKCSDE 31(4)
April 20, 2010 

Visible-photoresponsive Nitrogen-Doped Mesoporous TiO2 Films
for Photoelectrochemical Cells
Jae Young Bae, Tae Kwan Yun, Kwang Soon Ahn*, Jae Hong Kim*
Nitrogen-doped TiO2, Visible-photoresponsive, Photoelectrochemical cells, Mesoporous electrodes
Nitrogen-doped TiO2 (TiO2:N) nano-particles with a pure anatase crystalline structure were successfully synthesized through the hydrolysis of TiCl4 in an ammonia aqueous solution. The samples were characterized using X-ray diffraction (XRD), transmission electron microscopy (TEM), N2-sorption, and UV-vis diffuse reflectance spectra (UV-vis DRS) techniques. The absorption edge of nitrogen-doped TiO2 shifted into the visible wavelength region. The photoelectrochemical (PEC) performances were investigated for the TiO2 mesoporous electrodes doped with different nitrogen concentrations. The TiO2:N electrodes exhibited much higher PEC responses compared to the pure TiO2 electrode because of the significantly enhanced visible-photoresponsibility of the TiO2:N electrodes.
925 - 928
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