TY - JOUR
T1 - Fabrication and photochromic study of titanate nanotubes loaded with silver nanoparticles
AU - Miao, L.
AU - Ina, Y.
AU - Tanemura, S.
AU - Jiang, T.
AU - Tanemura, M.
AU - Kaneko, K.
AU - Toh, S.
AU - Mori, Y.
N1 - Funding Information:
This work is supported in part by Grants from the NITECH 21st Century COE program for “World Ceramics Center for Environmental Harmony” and also partly supported by “Nanotechnology Support Project” of the Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan.
PY - 2007/7/1
Y1 - 2007/7/1
N2 - Pure anatase-TiO2 and/or titanate nanotubes, photochromic Ag loaded titanium dioxide nanotubes (TNTs) and AgCl loaded titanate nanotubes were synthesized by hydrothermal method. The pH value during the neutralization process plays a crucial role in controlling the morphology and composition of the nanotubes. All these nanotubes were confirmed by XRD, TEM, EDS and XPS analysis. Most of them have open ends with inner/outer diameters of 7/10 nm and several hundred nanometers in length. For photochromic behavior in the case of AgCl-titanate nanotubes, the red color can be clearly observed after irradiation by red light, while the yellow, green, blue ones displayed pale black after the corresponding irradiation. On the other hand, Ag loaded TNT sample exhibited multicolor photochromism corresponding to that of incident light. The photoreduction of silver halide to Ag particle in the case of loaded AgCl particles and a particle-plasmon-assisted electron transfer from Ag nanoparticles to TiO2 in the case of loaded Ag particles are considered to be responsible for this different behavior.
AB - Pure anatase-TiO2 and/or titanate nanotubes, photochromic Ag loaded titanium dioxide nanotubes (TNTs) and AgCl loaded titanate nanotubes were synthesized by hydrothermal method. The pH value during the neutralization process plays a crucial role in controlling the morphology and composition of the nanotubes. All these nanotubes were confirmed by XRD, TEM, EDS and XPS analysis. Most of them have open ends with inner/outer diameters of 7/10 nm and several hundred nanometers in length. For photochromic behavior in the case of AgCl-titanate nanotubes, the red color can be clearly observed after irradiation by red light, while the yellow, green, blue ones displayed pale black after the corresponding irradiation. On the other hand, Ag loaded TNT sample exhibited multicolor photochromism corresponding to that of incident light. The photoreduction of silver halide to Ag particle in the case of loaded AgCl particles and a particle-plasmon-assisted electron transfer from Ag nanoparticles to TiO2 in the case of loaded Ag particles are considered to be responsible for this different behavior.
KW - Hydrothermal method
KW - Nanostructures
KW - Photochromism
KW - Semiconducting surface
KW - Titanium dioxide and titanate
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U2 - 10.1016/j.susc.2006.12.062
DO - 10.1016/j.susc.2006.12.062
M3 - Article
AN - SCOPUS:34250756458
SN - 0039-6028
VL - 601
SP - 2792
EP - 2799
JO - Surface Science
JF - Surface Science
IS - 13
ER -