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Doping effect of phosphate in Bi2WO6 and universal improved photocatalytic activity for removing various pollutants in water

Paper ID Volume ID Publish Year Pages File Format Full-Text
44996 46393 2016 9 PDF Available
Title
Doping effect of phosphate in Bi2WO6 and universal improved photocatalytic activity for removing various pollutants in water
Abstract

•PO4-doped Bi2WO6 is firstly prepared by the urea-precipitation method, which exhibits the enhanced photocatalytic activity for removing various contaminants in water.•Doping effect of PO4 group effectively adjusts band gap and increases the separation efficiency of charge carriers.•This work launches an exemplificative strategy for doping ionic group into the Bi-based oxides to improve photocatalytic activity.

Ionic group doping into the semiconductor photocatalyst is a new concept to improve photocatalytic performance, which always is a difficult challenge. In this paper, PO4-doped Bi2WO6 photocatalyst is prepared by the urea-precipitation way in the hydrothermal process for the first time. The as-prepared sample presents the universal enhanced photocatalytic activity for removing various contaminants in water compared with the pristine Bi2WO6 under visible-light irradiation, such as heavy metal Cr (VI), colored dye RhB, colorless phenol and different kind antibiotics. It attributes to the doping effect of PO4 group in Bi2WO6 influencing on energy band structure, light absorption property and separation efficiency of the charge carriers. This work provides a new insight into anionic group doping effects and takes an important step toward the development of improving Bi-based photocatalyst activity.

Graphical abstractPO4-doped Bi2WO6 photocatalyst is prepared by the urea-precipitation way in the hydrothermal process for the first time, which presents the enhanced photocatalytic activity for removing various contaminants in water compared with the pristine Bi2WO6 under visible-light irradiation.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Bi2WO6 photocatalyst; Anionic group doping; Various pollutant removal; Band structure regulation; Effective charge separation
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Doping effect of phosphate in Bi2WO6 and universal improved photocatalytic activity for removing various pollutants in water
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 188, 5 July 2016, Pages 39–47
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