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Photocatalytic oxidation of water and air contaminants with metal doped BiTaO4 irradiated with visible light

Paper ID Volume ID Publish Year Pages File Format Full-Text
55176 47042 2012 10 PDF Available
Title
Photocatalytic oxidation of water and air contaminants with metal doped BiTaO4 irradiated with visible light
Abstract

Various metal ions (Al, Nd, La, Ga, Ba, Sn, W, Fe, Co, Cr, Ce, Cu, Sb, Pb, Ni, Ag) doped and undoped triclinic BiTaO4 photocatalysts were synthesized using a solution method. The prepared materials were characterized with high resolution transmission electron microscopy (HRTEM), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDS), and UV–vis diffuse reflectance spectroscopy. BiTaO4 doped with various metal ions were tested for photocatalytic oxidation of water and air contaminants with both UV and visible light irradiation. Metal ion doping changed the photophysical properties, but did not alter the crystalline structure of BiTaO4. Enhanced photocatalytic oxidation of toluene in air was observed for dopants such as Al, Nd, La, Ga, Ba, Sn, W, Fe, Sb, Ag, while other metal ions like Cu, Ce, Co, Pb, and Ni induced a detrimental effect on the photocatalytic performance. BiTaO4 doped with La, Ga and Nd catalysts showed much better and stable performance than TiO2 in gaseous toluene oxidation with both UV and visible light. Some metal ion doped BiTaO4 catalysts also have shown good performance in methylene blue degradation in water.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (155 K)Download as PowerPoint slideHighlight► A solution method was employed to prepare metal ion doped BiTaO4 photocatalysts. ► BiTaO4 doped with La, Ga and Nd catalysts showed better and stable activity than TiO2 under both UV and visible light. ► Metal ion doped BiTaO4 catalysts showed good performance in methylene blue degradation.

Keywords
Visible light; BiTaO4; Metal ion doping; Toluene; Methylene blue
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Photocatalytic oxidation of water and air contaminants with metal doped BiTaO4 irradiated with visible light
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 192, Issue 1, 30 September 2012, Pages 203–212
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