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Synthesis and photocatalytic activity of Mn-doped TiO2 nanostructured powders under UV and visible light

Paper ID Volume ID Publish Year Pages File Format Full-Text
46684 46445 2012 8 PDF Available
Title
Synthesis and photocatalytic activity of Mn-doped TiO2 nanostructured powders under UV and visible light
Abstract

A straight forward, simple and inexpensive process has been developed by sol–gel method for the synthesis of manganese (Mn) doped and undoped TiO2 photocatalysts. X-ray powder diffractometry (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) revealed the presence of structural nanoparticles with an average nanocrystalline size of about 20 nm. FT-IR/vis adsorption has shown enhanced sub-band-gap absorption as a function of Mn concentration. The photocatalytic activity of these materials was evaluated by the degradation of a basic Methylene Blue (MB) as organic contaminant. Mn-doped TiO2 powder with molar ratio 0.1:100 was mixed with calcareous filler (5% and 10% respectively) and the photocatalytic activity was evaluated by the degradation of inorganic pollutants such as NOx under UV and visible light.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Mn doped TiO2 as photocatalytic material. ► This photo catalytic material lies on the degradation of indoor pollutants such as NO using visible light (vis). ► The synthesis procedure is simple, quick and inexpensive and allows for large scale material composition. ► Amount of dopant influences the efficiency of NO degradation. Activity of 0.1% Mn:TiO2 maintained when embedded in building matrix.

Keywords
Mn-doped TiO2 nanoparticles; Photocatalysis under UV/visible light; Degradation of NOx; Heterogeneous photocatalytic oxidation; In-door depollution
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Synthesis and photocatalytic activity of Mn-doped TiO2 nanostructured powders under UV and visible light
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volumes 113–114, 22 February 2012, Pages 79–86
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