Photocatalytic Degradation of Phenol with Bacteriorhodopsin Sensitized TiO2 Nanoparticles

Gang Dai; Luo Meng Chao; Tatsuo Iwasa

doi:10.4028/www.scientific.net/AMR.955-959.415

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 955-959Photocatalytic Degradation of Phenol with...

Photocatalytic Degradation of Phenol with Bacteriorhodopsin Sensitized TiO₂ Nanoparticles

Abstract:

Bacteriorhodopsin (BR) is a light driven proton pump firstly found in the membrane of halophilic archaea. BR absorbs wide range of visible light with high quantum efficiency. To elucidate the sensitizing effect of BR, we tested the photocatalytic degradation of phenol with BR-sensitized TiO₂ nanoparticles and compared with that of Alizarin red (AR). When the concentration of BR was 13.1 mg/L (4.9×10^-7 mol/L), 23.8% of phenol was degradated after 2 hours of light irradiation. The degradation percentage was 3.5 times higher than that with TiO₂nanoparticles alone and similar to that sensitized by AR (20.1%). The possibilities and approaches to increase the sensitizing performance of BR were discussed.

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Periodical:

Advanced Materials Research (Volumes 955-959)

Pages:

415-418

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.955-959.415

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Online since:

June 2014

Authors:

Gang Dai, Luo Meng Chao, Tatsuo Iwasa*

Keywords:

Bacteriorhodopsin, Dye Sensitized TiO₂ Nanoparticles, Photocatalytic Degradation

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