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Preparation of N-Doped Bi2WO6 Microspheres for Efficient Visible Light-Induced Photocatalysis

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Acta Metallurgica Sinica (English Letters) Aims and scope

Abstract

The N-doped bismuth tungstate (Bi2WO6) photocatalysts with high visible light activity were prepared by the hydrothermal method using urea as a nitrogen source. The as-prepared N-doped Bi2WO6 samples were characterized by X-ray diffraction, scanning electron microscopy, specific surface area, photocurrent analysis, and UV–Vis diffuse reflectrance spectroscopy. The photocatalytic activity was evaluated by photocatalytic degradation of rhodamine B (RhB) solution under visible light irradiation. The photocatalytic mechanisms were analyzed by active species trapping experiments which revealed that the holes were the main active species of N-doped Bi2WO6 products in aqueous solution under visible light irradiation, rather than ·OH and O •−2 . With the assistance of H2O2, the photocatalytic activity for degradation of RhB could be further improved because H2O2 reacted with conduction band electrons to generate more hydroxyl radicals.

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Acknowledgments

This study was financially supported by the Scientific Research Foundation for the Returned Overseas Chinese Scholars, the State Education Ministry (No. 1001603-C), “521 Talents Training Plan” in ZSTU, the National Natural Science Foundation of China (Nos. 51373155 and 51133006), the Natural Science Foundation of Zhejiang Province (No. LY13B030009), and the Innovative Program for Graduate Students of Zhejiang Sci-Tech University (No. 2013YSPY15).

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Authors and Affiliations

  1. Department of Materials Engineering, College of Materials and Textile, Zhejiang Sci-Tech University, Hangzhou, 310018, China

    Bolin Tang, Guohua Jiang, Zhen Wei, Xia Li, Xiaohong Wang, Tengteng Jiang, Wenxing Chen & Junmin Wan

  2. Key Laboratory of Advanced Textile Materials and Manufacturing Technology (ATMT), Ministry of Education, Zhejiang Sci-Tech University, Hangzhou, 310018, China

    Bolin Tang, Guohua Jiang, Zhen Wei, Xia Li, Xiaohong Wang, Tengteng Jiang & Wenxing Chen

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  1. Bolin Tang
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  2. Guohua Jiang
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  3. Zhen Wei
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  4. Xia Li
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  5. Xiaohong Wang
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  6. Tengteng Jiang
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  8. Junmin Wan
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Correspondence to Guohua Jiang.

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Available online at http://link.springer.com/journal/40195

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Tang, B., Jiang, G., Wei, Z. et al. Preparation of N-Doped Bi2WO6 Microspheres for Efficient Visible Light-Induced Photocatalysis. Acta Metall. Sin. (Engl. Lett.) 27, 124–130 (2014). https://doi.org/10.1007/s40195-013-0009-z

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  • DOI: https://doi.org/10.1007/s40195-013-0009-z

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