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New dye sensitized photocatalysts: Copper(II)-phthalocyanine/TiO2 nanocomposite for water remediation

Paper ID Volume ID Publish Year Pages File Format Full-Text
26061 43932 2016 9 PDF Available
Title
New dye sensitized photocatalysts: Copper(II)-phthalocyanine/TiO2 nanocomposite for water remediation
Abstract

•Production of novel copper azomethyn-bridged phenolic phtalocyanines (CuPc).•Characterization of CuPc molecules.•Production of CuPc/TiO2 nanocomposites.•Structural analyses of CuPc/TiO2 nanocomposites.•Photocatalytic reduction of Cr(VI) and photocatalytic disinfection properties.

In this study, a group of novel copper azomethyn-bridged phenolic phtalocyanines (CuPc) were synthesized. These derivatives are completely new, synthesis and characterization studies are first time reported. Four derivatives which have peripheral or non-peripheral substitution on macrocyclic ring were produced and characterized employing various spectroscopic methods. CuPc were immobilized on TiO2 nanoparticles to obtain dye sensitized photoactive nanocomposites (1% of the mass of TiO2). Prepared composites were characterized by SEM, EDX, UV-vis, DRS and XRD analysis. Results revealed that the composites possess anatase structure and phthalocyanine loading on TiO2 exposes strong visible light absorption. Photocatalytic activities of the produced composite materials were tested for reduction of Cr(VI) as a model pollutant and its disinfection properties were investigated using Escherichia coli as a model microorganism employing a near visible UV-A light (365 nm) source. All composite materials exhibited much more photocatalytic activity than bare TiO2 for both pollutants.

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Keywords
Photocatalysis; Copper phthalocyanine; Cr(VI) reduction; Photodisinfection
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New dye sensitized photocatalysts: Copper(II)-phthalocyanine/TiO2 nanocomposite for water remediation
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 324, 30 June 2016, Pages 117–125
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
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