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Copper(II) phthalocyanine tetrasulfonate sensitized nanocrystalline titania photocatalyst: Synthesis in situ and photocatalysis under visible light

Paper ID Volume ID Publish Year Pages File Format Full-Text
52902 46891 2006 5 PDF Available
Title
Copper(II) phthalocyanine tetrasulfonate sensitized nanocrystalline titania photocatalyst: Synthesis in situ and photocatalysis under visible light
Abstract

Copper(II) phthalocyanine tetrasulfonate (CuPcTs) sensitized nanocrystalline anatase TiO2 photocatalyst was synthesized in situ at low temperature in a short time employing ultrasonic irradiation. The XRD patterns demonstrated that TiO2 was anatase structured, and the TEM images displayed that the average particle sizes of the as-prepared powders were nanometric (50–60 nm). The DRS data indicated that the CuPcTs-sensitized TiO2 had obvious absorption band in the visible light region, and the intensity of the monomeric CuPcTs absorption peak increased relative to the dimer due to the desorption or deaggregation of the dimeric after heat treatment below 200 °C. The results of photodecomposition of methyl orange revealed that CuPcTs–TiO2 had much more photocatalytic activity than CuPcTs or pure TiO2, and the monomeric CuPcTs-sensitized TiO2 was more photocatalytic than the dimeric CuPcTs-sensitized TiO2 under the visible light (λ > 450 nm). The stability investigation indicated that the oxidized state of CuPcTs could be reduced by methyl orange or other intermediate substances, which promoted the regeneration of CuPcTs dye.

Keywords
Titania photocatalyst; In situ synthesis; Dye sensitization; Visible light; Copper(II) phthalocyanine tetrasulfonate
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Copper(II) phthalocyanine tetrasulfonate sensitized nanocrystalline titania photocatalyst: Synthesis in situ and photocatalysis under visible light
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 7, Issue 8, August 2006, Pages 518–522
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us