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Photocatalytic activity of PbMoO4 molybdate synthesized by microwave method

Paper ID Volume ID Publish Year Pages File Format Full-Text
54808 47027 2013 5 PDF Available
Title
Photocatalytic activity of PbMoO4 molybdate synthesized by microwave method
Abstract

Lead molybdate powders (PbMoO4) with scheelite-type structure were successfully synthesized at low temperatures by using microwave irradiation (MW) in ethylene glycol medium. The resulting powders were characterized by X-ray powder diffraction (XRD), diffuse reflectance spectroscopy (DRS), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and adsorption–desorption N2 isotherms (BET). PbMoO4 was tested as photocatalyst under UV irradiation for the degradation reaction of rhodamine B (rhB), indigo carmine (IC), orange G (OG), and methyl orange (MO). The bleaching of the organic dye solutions over PbMoO4 photocatalyst was quickly reached for rhB, IC, and OG with half-life times (t1/2) shorter than 7 min. On the other hand, MO shows a recalcitrant behavior to photocatalytic degradation with t1/2 = 172 min. Total organic carbon (TOC) analysis of samples irradiated revealed that mineralization of organic dyes by the action of PbMoO4 is feasible in 67% (rhB), 83% (IC), 55% (OG), and 60% (MO) after 96 h of UV irradiation.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (151 K)Download as PowerPoint slideHighlights► PbMoO4 was synthesized by using microwave irradiation in ethylene glycol medium. ► Bleaching of the organic dye solutions over PbMoO4 was quickly reached. ► PbMoO4 photocatalyst was able to mineralize rhB, IC, OG and MO.

Keywords
PbMoO4; Microwave irradiation; Heterogeneous photocatalysis
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Photocatalytic activity of PbMoO4 molybdate synthesized by microwave method
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 212, 1 September 2013, Pages 70–74
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
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