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Hydrothermal Synthesis of Nanorods/Nanoparticles TiO2 for Photocatalytic Activity and Dye-sensitized Solar Cell Applications

Published online by Cambridge University Press:  01 February 2011

Sorapong Pavasupree ,
Supachai Ngamsinlapasathian ,
Yoshikazu Suzuki  and
Susumu Yoshikawa
Sorapong Pavasupree
Affiliation:
sorapongp@yahoo.com, Institute of Advanced Energy, Kyoto University, Molecular Assemblies Design Research Section, Gokasho, Uji, 611-0011, Japan, +81-774-38-3504, +81-774-38-3508
Supachai Ngamsinlapasathian
Affiliation:
supachai@iae.kyoto-u.ac.jp, Institute of Advanced Energy, Kyoto University, Uji, Kyoto, 611-0011, Japan
Yoshikazu Suzuki
Affiliation:
suzuki@iae.kyoto-u.ac.jp, Institute of Advanced Energy, Kyoto University, Uji, Kyoto, 611-0011, Japan
Susumu Yoshikawa
Affiliation:
s-yoshi@iae.kyoto-u.ac.jp, Institute of Advanced Energy, Kyoto University, Uji, Kyoto, 611-0011, Japan
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Abstract

Nanorods/nanoparticles TiO2 with mesoporous structure were synthesized by hydrothermal method at 150 °C for 20 h. The samples characterized by XRD, SEM, TEM, SAED, HRTEM, and BET surface area. The nanorods had diameter about 10-20 nm and the lengths of 100-200 nm, the nanoparticles had diameter about 5-10 nm. The prepared material had average pore diameter about 7-12 nm. The BET surface area and pore volume of the sample are about 203 m2/g and 0.655 cm3/g, respectively. The nanorods/nanoparticles TiO2 with mesoporous structure showed higher photocatalytic activity (I3− concentration) than the nanorods TiO2, nanofibers TiO2, mesoporous TiO2, and commercial TiO2 (ST-01, P-25, JRC-01, and JRC-03). The solar energy conversion efficiency (η) of the cell using nanorods/nanoparticles TiO2 with mesoporous structure was about 7.12 % with Jsc of 13.97 mA/cm2, Voc of 0.73 V and ff of 0.70; while η of the cell using P-25 reached 5.82 % with Jsc of 12.74 mA/cm2, Voc of 0.704 V and ff of 0.649.

Keywords

hydrothermalnanostructureceramic
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 951: Symposium E – Nanofunctional Materials, Nanostructures and Novel Devices for Biological and Chemical Detection , 2006 , 0951-E09-04
Copyright
Copyright © Materials Research Society 2007

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References

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