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Preparation and Photoactive Characterization of Tube-shaped Al-doped ZnO Ceramics.

Published online by Cambridge University Press:  11 February 2011

Yoshinobu Fujishiro
Affiliation:
Synergy Materials Research Center, National Institute of Advanced Industrial Science and Technology (AIST), Joint Research Center for Advanced Technology, Shidami Human Science Park 2268–1, Shimo-shidami, Moriyama-ku, Nagoya, 463–8687, JAPAN. E-mail : y-fujishiro@aist.go.jp
M. Awano
Affiliation:
Synergy Materials Research Center, National Institute of Advanced Industrial Science and Technology (AIST), Joint Research Center for Advanced Technology, Shidami Human Science Park 2268–1, Shimo-shidami, Moriyama-ku, Nagoya, 463–8687, JAPAN. E-mail : y-fujishiro@aist.go.jp
S. Kanzaki
Affiliation:
Synergy Materials Research Center, National Institute of Advanced Industrial Science and Technology (AIST), Joint Research Center for Advanced Technology, Shidami Human Science Park 2268–1, Shimo-shidami, Moriyama-ku, Nagoya, 463–8687, JAPAN. E-mail : y-fujishiro@aist.go.jp
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Tubular Al-doped ZnO particles were prepared by homogeneous precipitation in the mixed solutions of Al(NO3)2, Zn(NO3)2, sodium dodecyl sulfate (SDS) surfactant and urea. At the molar ratio of Metal ions(Mt) : SDS : urea : H2O is 1 : 2 : 20 : 60, tubular products formed by heating at 80°C for 12 h. Plate like ZnO particles were obtained at Mt : SDS : urea : H2O = 1 : 2 : 10 : 60 or 1 : 1 : 20 : 60. The diameter of typical ZnO tube is ca.100 nm, and the length of tube is about 600nm (aspect ratio = 6). The relative surface area of tubular Al-doped ZnO is ca. 40.2 m2/g. The photo-decomposition rate of NO3 - ions using tubular Al-doped ZnO particles was higher than standard TiO2 photo-catalysts (P-25) by irradiation >290nm light in 10mM KNO3-10vol%EtOH solutions at 30°C. The obtained materials showed DC conductive properties as compacted substrate by sintered at 400°C.

Type
Research Article
Copyright
Copyright © Materials Research Society 2003

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