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화염법으로 제조된 TiO2 나노분말의 결정구조에 미치는 화염가스 유량의 영향

Effect of the Flow Rate of Flame Gases on the Crystal Structure of TiO2 Nanopowder Synthesized by Flame Method

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주제분류금속공학

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Abstract

TiO2 nanopowder has been synthesized by means of the flame method using a precursor of titanium tetraisopropoxide (TTIP, Ti(OC3H7)4). In order to clarify the effect of cooling rate of hot flame on the formation of TiO2 crystalline phases, the flame was controlled by varying the mixing ratio and the flow rate of gases. Anatase phase was predominantly synthesized under the condition having the steep cooling gradient in flame, while a slow cooling gradient enabled to form almost rutile TiO2 nanopowder of above 95%.

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