TY - JOUR
T1 - Charge separation at the rutile/anatase interface
T2 - A dominant factor of photocatalytic activity
AU - Miyagi, Takahira
AU - Kamei, Masayuki
AU - Mitsuhashi, Takefumi
AU - Ishigaki, Takamasa
AU - Yamazaki, Atsushi
PY - 2004/6/1
Y1 - 2004/6/1
N2 - Epitaxial and polycrystalline anatase films were grown by pulse-powered magnetron sputtering. The photoreduction of Ag ions showed the difference in the distribution of the photocatalytic active sites in these films. The polycrystalline anatase film was covered with an Ag layer. In contrast, discrete Ag particles were interspatially deposited on the epitaxial anatase film. Evaluation of the epitaxial film by micro-Raman spectrometry revealed that the rutile coexisted at only the site where the Ag particle was precipitated. These results suggest that the rutile/anatase interface is the active site for photocatalysis and is one of the dominant factors of the photocatalytic activity.
AB - Epitaxial and polycrystalline anatase films were grown by pulse-powered magnetron sputtering. The photoreduction of Ag ions showed the difference in the distribution of the photocatalytic active sites in these films. The polycrystalline anatase film was covered with an Ag layer. In contrast, discrete Ag particles were interspatially deposited on the epitaxial anatase film. Evaluation of the epitaxial film by micro-Raman spectrometry revealed that the rutile coexisted at only the site where the Ag particle was precipitated. These results suggest that the rutile/anatase interface is the active site for photocatalysis and is one of the dominant factors of the photocatalytic activity.
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U2 - 10.1016/j.cplett.2004.04.042
DO - 10.1016/j.cplett.2004.04.042
M3 - Article
AN - SCOPUS:2442715275
SN - 0009-2614
VL - 390
SP - 399
EP - 402
JO - Chemical Physics Letters
JF - Chemical Physics Letters
IS - 4-6
ER -