튜브 전기로를 이용한 TiO₂ 나노입자의 합성 및 특성 분석

Other Titles
Synthesis and Analysis of Nanosized TiO₂ Particles Using a Tube Furnace
Authors
배귀남현정은이태규정종수
Issue Date
2004-06
Publisher
한국대기환경학회
Citation
한국대기환경학회지, v.20, no.3, pp.411 - 419
Abstract
Titania particles are widely used as a photocatalyst to treat various contaminants in air and water. Titania particles were formed by vapor-phase oxidation of titanium tetraisopropoxide (TTIP) in a tube furnace between 773 and 1,273 K. The effect of process variables such as furnace temperature. flow rate of carrier air. and flow rate of sheath air on powder size and phase characteristics was investigated using a scanning mobility particle sizer (SMPS), transmission electron microscopy (TEM) and X-ray diffraction (XRD). The size distribution of synthesized titania particles was characterized with mode diameter and peak concentration. The mode diameter ranging from 20 to 80 nm decreased with increasing flow rates of sheath air and carrier air, and increased with increasing furnace temperature. The peak concentration increased with increasing flow rates of sheath air and carrier air. The best synthetic condition for high production rate can be derived from the experimental data set represented by mode diameter and peak concentration. The crystal structure of synthesized titania particles was found to be anatase phase, ensuring high photocatalytic potential.
Keywords
Titania; Vapor synthesis; Nanoparticle; Particle size distribution
ISSN
1598-7132
URI
https://pubs.kist.re.kr/handle/201004/137530
Appears in Collections:
KIST Article > 2004
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