Department of Chemical Engineering, College of Engineering, Dankook University, Jukjeon-dong, Yongin-si, Gyeonggi-do, 16890, Korea
단국대학교 화학공학과
Reproduction, stored in a retrieval system, or transmitted in any form of any part of this publication is permitted only by written permission from the Polymer Society of Korea.
TiO2 photocatalysts doped with various concentrations of Cr and WO3 were prepared by sol-gel synthesis to achieve stable photoactive reactions in the visible light region and to be applied to the glass surface. Their activity was measured and compared under a 500 W xenon light source by artificial sunlight using methylene blue and methyl orange decomposition methods, and Cr in a 3.8% molar ratio and 10 mg of WO3 were set as the optimum composition ratio. No change in the TiO2 crystal structure due to the doped atoms was observed through X-ray diffraction analysis. After dipping and coating the photocatalyst on a glass plate, the anatase phase structure, smooth surface, and enhanced photoactive properties were observed as a result of the same analysis. The photocatalyst manufactured using the components and composition ratios proposed in this study can be widely applied in industrial, medical equipment, and tissue engineering fields.
가시광선 영역에서 안정적인 광활성 반응을 나타내며 유리표면에 적용하기 위해 다양한 농도의 Cr과 WO3가 도핑된 TiO2 광촉매를 졸-젤 합성법으로 제조하였다. 이들의 활성측정은 메틸렌블루 및 메틸오렌지 분해법을 이용하여 인위적인 태양광으로써 500W 제논광원 하에서 측정 비교되었으며, 3.8% 몰비의 Cr과 10 mg의 WO3를 최적 조성비로 정하였다. X-선 회절분석(XRD)을 통해 도핑된 원자들이 TiO2의 아나타아제(anatase phase) 결정구조에 영향을 주지 않음을 관찰하였다. 광촉매 용액을 유리판에 딥 코팅한 후 동일하게 분석한 결과 아나타아제(anatase phase) 구조와 매끄러운 표면 및 원할한 광활성 특성을 관찰하였다. 본 연구에서 제안한 성분 및 조성비를 이용하여 제조된 광촉매는 산업, 의료기기 및 조직공학 분야에서 널리 응용될 수 있을 것이다.
Keywords: Cr/WO3 doped TiO2, visible light responsible photocatalyst, glass coating, medical lens, anti-pollution.
2024; 48(3): 333-338
Published online May 25, 2024
Department of Chemical Engineering, College of Engineering, Dankook University, Jukjeon-dong, Yongin-si, Gyeonggi-do, 16890, Korea