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Photo-corrosion inhibition and photoactivity enhancement with tailored zinc oxide thin films

Paper ID Volume ID Publish Year Pages File Format Full-Text
30508 44483 2012 7 PDF Available
Title
Photo-corrosion inhibition and photoactivity enhancement with tailored zinc oxide thin films
Abstract

The nanocrystalline ZnO, TiO2 and ZnO/TiO2 films are deposited onto FTO-coated glass substrates by using spray pyrolysis technique. The structural, morphological, optical and photoelectrochemical properties of the ZnO, TiO2 and ZnO/TiO2 are investigated by X-ray diffraction, scanning electron microscopy, UV–Vis spectroscopy and photoelectrochemical techniques. XRD analysis shows that films are polycrystalline and having hexagonal and tetragonal crystal structure for pure ZnO and TiO2. The photocatalytic degradation of methylene blue has been investigated with ZnO, TiO2 and ZnO/TiO2 photocatalysts. ZnO/TiO2 thin films have proved quite effective mineralization of methylene blue, while pure ZnO and TiO2 do not lead complete mineralization of methylene blue. The metabolites produced during degradation are analyzed by HPLC and Fourier transforms infrared spectroscopy. The by-products detected during degradation have been identified by GCMS technique.

► Preparation of ZnO, TiO2 and coupled ZnO/TiO2 thin films. ► Photocatalytic degradation of MB by ZnO, TiO2 and coupled ZnO/TiO2. ► Developed metabolites analyzed by using HPLC. ► Possible reaction pathways of MB degradation.

Keywords
Photoelectrocatalysis; Zinc oxide; Methylene blue; FTIR; HPLC; GCMS
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Photo-corrosion inhibition and photoactivity enhancement with tailored zinc oxide thin films
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology B: Biology - Volume 110, 2 May 2012, Pages 15–21
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