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Photoelectrocatalytic degradation of benzoic acid using Au doped TiO2 thin films

Paper ID Volume ID Publish Year Pages File Format Full-Text
29799 44440 2015 8 PDF Available
Title
Photoelectrocatalytic degradation of benzoic acid using Au doped TiO2 thin films
Abstract

•Au doped TiO2 thin films prepared by chemical spray pyrolysis technique.•Effect of Au doping on the structural, morphological and optical properties.•Photoelectrocatalytic degradation of benzoic acid under UV light illumination.

Highly transparent pure and Au doped TiO2 thin films are successfully deposited by using simple chemical spray pyrolysis technique. The effect of Au doping onto the structural and physicochemical properties has been investigated. The PEC study shows that, both short circuit current (Isc) and open circuit voltage (Voc) are (Isc = 1.81 mA and Voc = 890 mV) relatively higher at 3 at.% Au doping percentage. XRD study shows that the films are nanocrystalline in nature with tetragonal crystal structure. FESEM images show that the film surface covered with a smooth, uniform, compact and rice shaped nanoparticles. The Au doped thin films exhibit indirect band gap, decreases from 3.23 to 3.09 eV with increase in Au doping. The chemical composition and valence states of pure and Au doped TiO2 films are studied by using X-ray photoelectron spectroscopy. The photocatalytic degradation effect is 49% higher in case 3 at.% Au doped TiO2 than the pure TiO2 thin film photoelectrodes in the degradation of benzoic acid. It is revealed that Au doped TiO2 can be reused for five cycles of experiments without a requirement of post-treatment while the degradation efficiency was retained.

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Photoelectrocatalytic degradation of benzoic acid using Au doped TiO2 thin films
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology B: Biology - Volume 142, January 2015, Pages 204–211
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
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Price after discount Only $4.95
100% Money Back Guarantee
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