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Characterisation and photocatalytic properties of titania–silica mixed oxides doped with Ag and Pt

Paper ID Volume ID Publish Year Pages File Format Full-Text
41796 45900 2010 6 PDF Available
Title
Characterisation and photocatalytic properties of titania–silica mixed oxides doped with Ag and Pt
Abstract

TiO2–SiO2 mixed oxides have been synthesised and modified by Ag and Pt deposition. Due to the effect of the silica on the mixed oxide, the prepared materials presented high surface areas and stabilised anatase as the only crystalline phase after calcination at 700 °C. Even using the same photodeposition experimental conditions, the yield for metal deposition depended highly on the metal considered, being much lower for Ag deposition. XPS studies permitted to estimate metal dispersion and oxidation state of the different samples, being both factors of high importance regarding photocatalytic improvement by metal deposition.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (109 K)Download as PowerPoint slideResearch highlights▶ Experimental parameters of photodeposition: high influence on final properties. ▶ Deposition yield and oxidation state depend highly on the kind of deposited metal. ▶ XPS study allows an estimation of the dispersion of metal particles. ▶ Addition of silica leads to surface area and anatase phase stabilisation. ▶ High improvement of photocatalytic activity achieved by Pt photodepostion.

Keywords
TiO2–SiO2; Ag; Pt; Photodeposition; Phenol degradation; Photocatalysis
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Characterisation and photocatalytic properties of titania–silica mixed oxides doped with Ag and Pt
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 387, Issues 1–2, 20 October 2010, Pages 135–140
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