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제121회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Synthesis and photocatalytic activity of porphyrin-TiO2 hybrid materials dyes under visible-light irradiation

2018년 2월 13일 11시 25분 23초
MAT.P-544 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
4월 20일 (금요일) 11:00~12:30
Material Chemistry
저자 및
gisu Heo, Kyeongsu Min, Myeongjin Kim, HyoRim Kim, Young-A Son*
Dept. of Advanced Organic Materials Engineering, Chungnam National University, Korea
TiO2 is an important functional material that is extensively applied in the food, plastics, electric material, papermaking, sensor, hydrogen production, photocatalyst, clean energy and other industrial applications. porphyrin compounds are naturally appropriate antennas for solar flux collection and capable to direct solar energy-to-chemical conversion equipment. Therefore, they are delightful photosensitizers and natural chemical stabilizers upon visible light irradiation. Taking advantage of their naturally occuring antennas and ideal photo factory capabilities, TiO2 sensitized by porphyrins has gained a great deal of attention in recent years. Its ability as a photo-generated reactive species, holes and electrons was confirmed by XRD, XPS, SEM, TEM, IR and Solid UV spectral analysis. The photocatalytic activity of methylene blue was systematically investigated in conjunction with porphyrin-TiO2 catalyst and bare TiO2. We can see the degradation results of MB for TiO2 photocatalysts systems. After reaction for 3 h, MB was less degraded in bare TiO2 in comparison with the porphyrin-TiO2 catalyst. The results show that TiO2 photocatalyst sensitized by porphyrin group can increase the wavelength response range, decrease the band gap, and enhance the photocatalytic activity under visible light, resulting in the degradation of MB. This result shows that, photocatalytic system can also be utilized for the advanced treatment of organic pollutants to encounter with the higher standard and demand of water treatment in the future.