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Photoelectric catalytic degradation of methylene blue by C60-modified TiO2 nanotube array

Paper ID Volume ID Publish Year Pages File Format Full-Text
47792 46482 2009 7 PDF Available
Title
Photoelectric catalytic degradation of methylene blue by C60-modified TiO2 nanotube array
Abstract

Fullerene (C60)-modified TiO2 nanotube array (TNA) was prepared by the electrophoresis deposition technique. The as-prepared samples showed the high efficiency for the photoelectric catalytic (PEC) degradation of nonbiodegradable azodyes methylene blue (MB). The highest PEC activity of C60-modified TNA (TNA/C60) was achieved at a lower bias potential (4.0 V), which was 2.3 times of the highest activity of TNA at 5.0 V. The high PEC activity came from the synergetic effect between C60 and TiO2, which promoted the charge separation, influenced the charge distribution of the electrical double layer and reduced the impedances of the Helemholtz and depletion layers. Moreover, the oxidation of MB was a quick process during the PEC degradation, and the process began with the oxidation of the dimethylamino group, which was different from the photocatalytic (PC) process began with the oxidation of S atom; MB was mineralized completely during PEC degradation.

Keywords
Photoelectrical catalysis; Fullerene; TiO2 nanotube array; Methylene blue
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 89, Issues 3–4, 15 July 2009, Pages 425–431
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
You save - $31
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100% Money Back Guarantee
Full-text PDF Download
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Any Questions? feel free to contact us