Chae Jeong-Seok, Chung Minchul, Ahn Ho-Geun, Jung Sang-Chul
Department of Environmental Engineering, Sunchon National University, 540-742 Jeonnam, Korea.
J Nanosci Nanotechnol. 2010 May;10(5):3534-7. doi: 10.1166/jnn.2010.2296.
In this study, the photo-catalytic degradation of methylene blue in TiO2 particles-dispersed aqueous solution was carried out by irradiating microwave and UV light simultaneously. The results of photocatalytic degradation of methylene blue showed that the decomposition rate increased with the microwave intensity, UV intensity, TiO2 particle dosages and the circulating fluid velocity. From the result of microwave-assisted photo-catalytic degradation of methylene blue, decomposition rate were shown gradually increased according to the increase of pH. The photo-catalytic degradation rate constant obtained under simultaneous irradiation of microwave and UV light case was about 1.5 times higher than irradiation of UV light only case. This result suggests that there is a synergy effect when the constituent techniques are applied together and that the additional irradiation of microwave can play a very important role in photo-catalysis of organic water pollutants.
在本研究中，通过同时照射微波和紫外光，对二氧化钛颗粒分散水溶液中的亚甲基蓝进行了光催化降解。亚甲基蓝光催化降解结果表明，分解速率随微波强度、紫外强度、二氧化钛颗粒剂量和循环流体速度的增加而提高。从微波辅助亚甲基蓝光催化降解结果来看，分解速率随pH值升高而逐渐增加。在微波和紫外光同时照射情况下获得的光催化降解速率常数比仅紫外光照射情况高约1.5倍。该结果表明，当这些组成技术一起应用时存在协同效应，并且额外的微波照射在有机水污染物的光催化中可发挥非常重要的作用。
