Dual-functional Bi3+, Dy3+ co-doping ZnWO4 for photoluminescence and photocatalysis

• Published in: Applied physics. A, Materials science & processing Materials science & processing, 2018-08, Vol.124 (8), p.1-8, Article 526
• Main Authors: Deng, Sheng, Zhang, Wei, Hu, Zhengfa, Feng, Zuyong, Hu, Peiju, Wu, Haoyi, Ma, Lun, Pan, Yongman, Zhu, Yanjuan, Xiong, Guangting
• Format: Article
• Language: English
• Subjects: Applied physics; Catalytic activity; Characterization and Evaluation of Materials; Chemical synthesis; Condensed Matter Physics; Doping; Electron recombination; Machines; Manufacturing; Materials science; Nanotechnology; Optical and Electronic Materials; Phosphors; Photocatalysis; Photodegradation; Photoluminescence; Physics; Physics and Astronomy; Pollutants; Processes; Rhodamine; Spectrum analysis; Surfaces and Interfaces; Thin Films; Ultraviolet radiation; X ray photoelectron spectroscopy; X-ray diffraction
• ISSN: 0947-8396; 1432-0630
• DOI: 10.1007/s00339-018-1948-z

Dual-functional ZnWO 4 :Dy 3+ , Bi 3+ were synthesized via high-temperature solid-state reaction method. The as-prepared samples were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), photoluminescence spectra and photocatalytic properties. The ZnWO 4 :Dy 3+ , Bi 3+ phosphor shows photoluminescence with a broad band and the feature Dy 3+ emission, and a high photocatalytic activity in degradation of Rhodamine B (RhB) under simulated UV irradiation. The result shows that doping Bi 3+ in ZnWO 4 :Dy 3+  can enhance light harvest capability to generate more electron–hole pairs, and acted as a trap center by decreasing the recombination of photogenerated electrons and holes. All of the results obtained by the work suggest that ZnWO 4 :Dy 3+ , Bi 3+ phosphors are promising materials for the photocatalytic decomposition of pollutants.