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Received November 8, 2017
Accepted December 15, 2017
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제조방법에 따른 TiO2의 광촉매 특성 분석
Photocatalytic Properties of TiO2 According to Manufacturing Method
동국대학교 화공생물공학과, 04620 서울특별시 중구 필동로 1길30
Department of Chemical and Biochemical Engineering, Dongguk University, Pildong-ro 1-gil, Jung-gu, Seoul, 04620, Korea
pjhoon@dongguk.edu
Korean Chemical Engineering Research, April 2018, 56(2), 156-161(6), 10.9713/kcer.2018.56.2.156 Epub 5 April 2018
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Abstract
염소법과 졸-겔법으로 TiO2 광촉매 분말을 제조하였다. 제조방법 및 조건에 따라 촉매의 결정상 형태(아나타제와 루타일)와 비표면적이 변화하는 것을 알 수 있었다. TTIP-sol로 제조한 광촉매가 염소법이나 TBOT-sol로 제조한 광촉매에 비해 methylene blue (MB) 분해 특성이 더 높았으며, 수용액상의 90% 이상의 MB를 제거할 수 있었다. 실험 결과를 통해 TiO2 광촉매는 단일 아나타제상와 큰 비표면적을 가지면 유기물 분해 특성을 향상될 수 있는 것을 확인하였다.
TiO2 photocatalyst powders were prepared by chlorination method and sol-gel method. Specific surface area and crystalline (i.e., anatase and rutile) of the catalyst varied depending on manufacture conditions and method. TTIP-sol photocatalyst had higher methylene blue (MB) decomposition characteristics than photocatalyst from chlorination method and TBOT-sol. MB removal efficiency from aqueous solution with TTIP-sol photocatalyst was over 90%. Experimental results showed that the TiO2 photocatalyst with a single anatase phase and a large specific surface area had high decomposition characteristics of organic materials.
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