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Inducing photocatalysis by visible light beyond the absorption edge: Effect of upconversion agent on the photocatalytic activity of Bi2WO6

Paper ID Volume ID Publish Year Pages File Format Full-Text
47082 46458 2010 6 PDF Available
Title
Inducing photocatalysis by visible light beyond the absorption edge: Effect of upconversion agent on the photocatalytic activity of Bi2WO6
Abstract

In order to harvest the solar energy more efficiently, Bi2WO6 photocatalysts doped with Er3+ were synthesized, in which Er3+ with upconversion properties could transform visible light beyond the absorption edge of Bi2WO6 into ultraviolet light and activate Bi2WO6. The photocatalytic activities of the photocatalysts were evaluated by the decolorization of rhodamine B (RhB) and the degradation of a typical colorless model pollutant, phenol under simulated solar light irradiation (λ > 290 nm). The results showed that the photocatalytic activity of Er3+-doped Bi2WO6 was much higher than the undoped one. In addition, Er3+-doped Bi2WO6 exhibited photocatalytic activity under a 3 W LED with the wavelength beyond the absorption edge of Bi2WO6, further testifying the upconversion effect of Er3+ on the enhanced photocatalytic activity of Bi2WO6.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideResearch highlights▶ Synthesis of a highly efficient Er3+-doped Bi2WO6 photocatalyst, in which Er3+ acted as an upconversion agent and could convert visible light into ultraviolet light. ▶ The as-prepared Er3+-doped Bi2WO6 photocatalyst exhibits much enhanced photocatalytic activity under both simulated solar light irradiation and visible light beyond the absorption edge of Bi2WO6 in the degradation of RhB and phenol. ▶ The incorporation of upconversion agent into the photocatalyst is a feasible strategy in the effective utilization of solar energy.

Keywords
Er3+-doped Bi2WO6; Photocatalyst; Upconversion; Rhodamine B; Phenol
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Inducing photocatalysis by visible light beyond the absorption edge: Effect of upconversion agent on the photocatalytic activity of Bi2WO6
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 101, Issues 1–2, 22 November 2010, Pages 68–73
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
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Any Questions? feel free to contact us