Optofluidic planar reactors for photocatalytic water treatment using solar energy.

作者: Lei Lei , Ning Wang , X. M. Zhang , Qidong Tai , Din Ping Tsai

DOI: 10.1063/1.3491471

关键词:

摘要: Optofluidics may hold the key to greater success of photocatalytic water treatment. This is evidenced by our findings in this paper that planar microfluidic reactor can overcome limitations mass transfer and photon previous reactors improve photoreaction efficiency more than 100 times. The microreactor has a chamber (5 cm×1.8 cm×100 μm) enclosed two TiO2-coated glass slides as top cover bottom substrate microstructured UV-cured NOA81 layer sealant flow input/output. In experiment, achieves 30% degradation 3 ml 3×10−5M methylene blue within 5 min shows reaction rate constant orders higher bulk reactor. Under optimized conditions, 8% s−1 achieved under solar irradiation. average apparent quantum found be only 0.25%, but effective reaches high 25%. Optofluidic inherit merits microfluidics...

参考文章(21)
R.E. Bird, R.L. Hulstrom, L.J. Lewis, Terrestrial solar spectral data sets Solar Energy. ,vol. 30, pp. 563- 573 ,(1983) , 10.1016/0038-092X(83)90068-3
Robert C. R. Wootton, Robin Fortt, Andrew J. de Mello, A Microfabricated Nanoreactor for Safe, Continuous Generation and Use of Singlet Oxygen Organic Process Research & Development. ,vol. 6, pp. 187- 189 ,(2002) , 10.1021/OP0155155
C. Monat, P. Domachuk, B. J. Eggleton, Integrated optofluidics: A new river of light Nature Photonics. ,vol. 1, pp. 106- 114 ,(2007) , 10.1038/NPHOTON.2006.96
Jinhan Mo, Yinping Zhang, Qiujian Xu, Jennifer Joaquin Lamson, Rongyi Zhao, Photocatalytic purification of volatile organic compounds in indoor air: A literature review Atmospheric Environment. ,vol. 43, pp. 2229- 2246 ,(2009) , 10.1016/J.ATMOSENV.2009.01.034
Detlef Bahnemann, Photocatalytic water treatment: solar energy applications Solar Energy. ,vol. 77, pp. 445- 459 ,(2004) , 10.1016/J.SOLENER.2004.03.031
Zhigang Zou, Jinhua Ye, Kazuhiro Sayama, Hironori Arakawa, Direct splitting of water under visible light irradiation with an oxide semiconductor photocatalyst Nature. ,vol. 414, pp. 625- 627 ,(2001) , 10.1038/414625A
Demetri Psaltis, Stephen R. Quake, Changhuei Yang, Developing optofluidic technology through the fusion of microfluidics and optics Nature. ,vol. 442, pp. 381- 386 ,(2006) , 10.1038/NATURE05060
Chang. Wei, Wen Yuan. Lin, Zulkarnain. Zainal, Nathan E. Williams, Kai. Zhu, Andrew P. Kruzic, Russell L. Smith, Krishnan. Rajeshwar, Bactericidal Activity of TiO2 Photocatalyst in Aqueous Media: Toward a Solar-Assisted Water Disinfection System. Environmental Science & Technology. ,vol. 28, pp. 934- 938 ,(1994) , 10.1021/ES00054A027
P. Nalini Vijaya Laxmi, P. Saritha, N. Rambabu, V. Himabindu, Y. Anjaneyulu, Sonochemical degradation of 2chloro-5methyl phenol assisted by TiO2 and H2O2. Journal of Hazardous Materials. ,vol. 174, pp. 151- 155 ,(2010) , 10.1016/J.JHAZMAT.2009.09.029
Hongfei Lin, Kalliat T. Valsaraj, Development of an optical fiber monolith reactor for photocatalytic wastewater Treatment Journal of Applied Electrochemistry. ,vol. 35, pp. 699- 708 ,(2005) , 10.1007/S10800-005-1364-X