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Photocatalytical and antibacterial activity of TiO2 nanoparticles obtained by laser ablation in water

Paper ID Volume ID Publish Year Pages File Format Full-Text
45579 46416 2015 8 PDF Available
Title
Photocatalytical and antibacterial activity of TiO2 nanoparticles obtained by laser ablation in water
Abstract

•TiO2 nanoparticles are synthesized with pulsed laser ablation in water.•Laser ablation is a versatile, scalable and “green” methodology.•Nanoparticles are composed by a mixture of fine crystalline and amorphous grains.•Laser ablated TiO2 nanoparticles show photocatalytic and antibacterial activity.

This work focuses on the study of photocatalytic and antibacterial activity of TiO2 nanoparticles synthesized by laser ablation in water. The nanoparticles have a log normal size distribution with a mean diameter of 34 nm and are composed by a mixture of small crystallites and disordered TiO2; they show good stability and are extremely pure. High photocatalytic (Methylene-Blue dye discoloration under UV illumination) and antibacterial (tested on Escherichia coli) activities comparable to that of commercial nanoparticles under the same experimental conditions were observed. Optical and structural properties were correlated to the photocatalytic and antibacterial activity, and compared to that of commercial TiO2 nanoparticles. An explanation of the high photo-activity yield is proposed taking into account the nanoparticles structure resulting from the peculiar synthesis procedure.

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Keywords
Laser ablation in liquid; Photocatalytical activity; Antibacterial activity; Titanium oxide; Nanoparticles
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Photocatalytical and antibacterial activity of TiO2 nanoparticles obtained by laser ablation in water
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 165, April 2015, Pages 487–494
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