Crystalline Characterization and Photodecomposition Properties of Rod-Shaped Na2Ti6O13 Powder Prepared by Molten Salt Process
Authors: Ku, Hye-Kyung; Oh, Hyo-Jin; Noh, Kyung-Jong; Jung, Sang-Chul; Park, Kyeong-Soon; Lee, Won-Jae; Kim, Sun-Jae
Source: Journal of Nanoscience and Nanotechnology, Volume 11, Number 8, August 2011 , pp. 7269-7272(4)
Publisher: American Scientific Publishers
Abstract:To prepare one-dimensional nanostructured Na2Ti6O13 powder, the starting materials of TiO2, NaCl and Na2CO3 were mixed and then heat-treated at 1000 °C for 2 hrs in air under molten state of NaCl. Changes in shape and phase, photo absorbance and photocatalytic ability of TiO2 particle were observed controlling added amount of Na2CO3 under constant weight ratio of TiO2 to NaCl using SEM, X-ray diffractometer, Raman spectroscopy, and UV-Vis spectroscopy. The TiO2 particle was changed into rod-shape Na2Ti6O13 with the addition of Na2CO3, showing increase in optical energy band-gap of the powder as well as gradual decrease of the photo-decomposition ability.
Document Type: Research Article
Publication date: August 2011
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