Park, Hoon Jie, HyunSeock Chae, Keun-Hwa Park, Jong-Ku Anpo, Masakazu Lee, Dok-Yol 2024-01-20T22:34:11Z 2024-01-20T22:34:11Z 2021-09-03 2008-10 1567-1739 https://pubs.kist.re.kr/handle/201004/133116 Anatase-type TiO2 nanopowders less than 10 nm in average diameter were synthesized by a chemical vapor synthesis method. The TiO2 nanopowders showed very poor photocatalytic properties, in spite of their large surface area. With subsequent heat treatment of the TiO2 powders, their photocatalytic properties determined by measuring the degradation of 2-propanol were improved at temperatures up to 600 degrees C and then diminished along with formation of a rutile phase. This improvement in the photocatalytic properties of TiO2 nanopowders was attributed to both a morphology change and a change in the electronic surface characteristics of TiO2 particles during heat treatment. (C) 2007 Elsevier B.V. All rights reserved. English ELSEVIER TITANIUM-DIOXIDE ELECTRONIC-STRUCTURE FLAME METHOD PHASE WATER DEGRADATION REACTIVITY MORPHOLOGY PARTICLES POWDERS Improvement of photocatalytic behavior of chemical-vapor-synthesized TiO2 nanopowders by post-heat treatment Article 10.1016/j.cap.2007.04.023 1 CURRENT APPLIED PHYSICS, v.8, no.6, pp.778 - 783 CURRENT APPLIED PHYSICS 8 6 778 783 scie scopus kci ART001325507 000258545500033 2-s2.0-47349123233 Materials Science, Multidisciplinary Physics, Applied Materials Science Physics Article; Proceedings Paper TITANIUM-DIOXIDE ELECTRONIC-STRUCTURE FLAME METHOD PHASE WATER DEGRADATION REACTIVITY MORPHOLOGY PARTICLES POWDERS TiO2 photocatalysts chemical vapor synthesis photocatalytic property heat treatment metallic behavior