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Photocatalytic activity enhancement of Bi2WO6 nanoparticles by Gd-doping via microwave assisted method

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Abstract

Gd-doped Bi2WO6 nanoparticles were successfully prepared through microwave assisted synthesis. The incorporation of Gd3+ ions into Bi2WO6 crystallite was analyzed by X-ray diffraction, energy dispersive X-ray spectroscopy, and X-ray photoelectron spectroscopy. The optical properties of the nanoparticles were characterized by UV–Vis absorption and photoluminescence spectroscopy. The photocatalytic activity of the nanoparticleswas investigated by degradation of Rhodamine B under visible-light irradiation. Our results showed that Gd-doping plays an important role for enhancing the visible light photocatalytic activity, and the enhanced photocatalytic activity of Gd-doped Bi2WO6 nanoparticles would be mainly correlated with the effective decrease of recombination rate of photogenerated electron–hole pairs.

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Acknowledgements

The authors would like to thank the Vietnam’s National Foundation for Science and Technology Development (NAFOSTED), Grant 103.02-2016.21 for financial support. X. B. Chen acknowledges the support by Wuhan Institute of Technology.

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Authors and Affiliations

  1. Faculty of Physics, Hanoi National University of Education, 136 Xuanthuy, CauGiay, Hanoi, Vietnam

    Luc Huy Hoang, Nguyen Dang Phu & Pham Do Chung

  2. School of Science and Laboratory of Optical Information Technology, Wuhan Institute of Technology, Wuhan, 430205, China

    Peng-Cheng Guo & Xiang-Bai Chen

  3. Department of Electrophysics, National Chiao Tung University, Hsin-Chu, 30010, Taiwan

    Wu Ching Chou

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  1. Luc Huy Hoang
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  2. Nguyen Dang Phu
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  3. Pham Do Chung
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  4. Peng-Cheng Guo
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  5. Xiang-Bai Chen
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Correspondence to Luc Huy Hoang or Xiang-Bai Chen.

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Hoang, L.H., Phu, N.D., Do Chung, P. et al. Photocatalytic activity enhancement of Bi2WO6 nanoparticles by Gd-doping via microwave assisted method. J Mater Sci: Mater Electron 28, 12191–12196 (2017). https://doi.org/10.1007/s10854-017-7034-z

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