fulltext.study @t Gmail

Fe3+:Ag/TiO2 nanocomposite: Synthesis, characterization and photocatalytic activity under UV and visible light irradiation

Paper ID Volume ID Publish Year Pages File Format Full-Text
39966 45841 2014 12 PDF Available
Title
Fe3+:Ag/TiO2 nanocomposite: Synthesis, characterization and photocatalytic activity under UV and visible light irradiation
Abstract

•Fe3+:Ag/TiO2 catalyst with high photocatalytic activity was synthesized.•The prepared nanocatalyst showed intensive absorption capacity in visible region.•Photocatalytic activity was prominently enhanced under UV and visible irradiation.•Fe3+ and Ag had synergistic effect on photodegradation of Methylene Blue.

A facile wet impregnation/photo-deposition method was performed to prepare a promising Fe3+:Ag/TiO2 nanocatalyst with high photocatalytic activity under ultraviolet and visible light irradiation. The nanophotocatalyst was characterized by X-ray diffraction, field emission scanning electron microscopy, transmission electron microscopy, energy-dispersive spectroscopy, inductively coupled plasma optical emission spectroscopy, X-ray photoelectron spectroscopy and UV–visible absorption spectroscopy. The photocatalytic efficiency of the prepared catalyst was evaluated through using the decomposition of Methylene Blue as a model compound under different light irradiations. Four light filters with various transmittance wavelengths were also applied to evaluate the probable photodegradation mechanism. Total organic carbon (TOC) was measured in order to evaluate the dye degradation. XPS spectra confirmed Fe(III) ions doped into TiO2 structure while silver nanoparticles deposited on the TiO2 surface. Fe3+ and Ag have synergistically improved the photocatalytic activity of TiO2 for photodegradation of dye under both ultraviolet and visible light irradiation. The co-operation of Fe3+ and Ag in the narrowing of the band gap and promoting the separation of the photogenerated electron–hole pairs was confirmed by photoluminescence spectroscopy. An appropriate Fe(III) and Ag ratio in the nanocomposite is found to be beneficial for the synergistic effect of doped metal ion and deposited noble metal nanoparticle. Fe3+:Ag/TiO2 nanocatalyst exhibits the potential to be effective in wastewater treatments superior to bare TiO2.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (189 K)Download as PowerPoint slide

Keywords
Fe3+:Ag/TiO2 nanophotocatalyst; Photodegradation; Synergistic effect; UV and visible light irradiation
First Page Preview
Fe3+:Ag/TiO2 nanocomposite: Synthesis, characterization and photocatalytic activity under UV and visible light irradiation
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
Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 473, 5 March 2014, Pages 104–115
Authors
, ,
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