Novel Tm3+/Yb3+–co-doped Bi2MoO6: Synthesis, characterization, and enhanced photocatalytic activity under visible-light irradiation. Issue 3 (14th February 2020)

• Record Type: Journal Article
• Authors: Zhang, Zuowei; Hao, Hongshun; Jin, Shanshan; Hou, Yunxia; Hou, Hongman; Zhang, Gongliang; Bi, Jingran; Yan, Shuang; Liu, Guishan; Gao, Wenyuan
• Is Part Of: Journal of materials research. Volume 35:Issue 3(2020)
• Page Start: 312
• Page End: 320
• Publication Date: 2020-02-14
• Subjects: Tm3+/Yb3+-Bi2MoO6, -- hydrothermal, -- up-conversion luminescence, -- photocatalytic activity; Materials -- Research -- Periodicals; 620.1105
• DOI: 10.1557/jmr.2020.4
• Languages: English
• ISSNs: 0884-2914

Abstract

Abstract: Abstract : A novel photocatalyst Tm 3+ /Yb 3+ –co-doped bismuth molybdate (Bi2 MoO6 ) were synthesized via the hydrothermal method. The samples were characterized through X-ray diffraction, field emission scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy (XPS), UV-vis diffuse reflectance spectra, and photoluminescence. XPS characterization confirmed the doped rare earth elements. Analysis of the optical properties explained the up-conversion process and its effect on the photocatalytic performance. The as-synthesized samples were employed to decompose Rhodamine B to value its photocatalytic activities under visible light irradiation. The doped samples showed an enhanced photocatalytic activity compared with the bare Bi2 MoO6 . When the ratio of Tm 3+ and Yb 3+ was 0.5:5, the degradation efficiency was the highest of 96.1% within 25 min, which was higher than that (74.9%) of pure Bi2 MoO6 . Moreover, the photocatalytic mechanism of improving the photocatalytic properties was discussed. Besides, the sample showed a super stability in photocatalytic activity. A novel catalyst for industrial pollutant degradation was proposed.