The TiO 2 nanoparticles of 25-30 nm or polymorphic TiO 2 nanorods (anatase or rutile) with a diameter of 65-75 nm and a length of several micrometers were synthesized by the modified sol-gel template process. The obtained nanoparticles were uniform as suggested by the scanning and transmission electron microscopic (SEM and TEM) images; similarly, TiO 2 nanorods obtained were of single anatase or of rutile phase after calcination at lower and higher temperatures, respectively, as characterized by X-ray diffraction.
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Acknowledgments This work was supported by the fund from Korea Basic Science Institute (Grant No. K3108A) for Dr. J. S. Jin and Dr. J. P. Kim.
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