Synthesis and photoactivity enhancement of Ba doped Bi{sub 2}WO{sub 6} photocatalyst

Journal Article · Wed Apr 15 04:00:00 EDT 2015 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2015.01.023· OSTI ID:22475749

Li, Wen Ting ^[1]; Huang, Wan Zhen; Zhou, Huan ^[2]; Yin, Hao Yong ^[3]; Zheng, Yi Fan ^[2]

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1. Department of Chemistry, Fujian Normal University, Fuzhou 350007 (China)
2. Research Center of Analysis and Measurement, Zhejiang University of Technology, Hangzhou 310014 (China)
3. Institute of Environmental Science and Engineering, Hangzhou Dianzi University, Hangzhou 310018 (China)

Highlights: • The Ba-doped Bi{sub 2}WO{sub 6} photocatalyst have been synthesized by a hydrothermal route. • The photocatalytic activity of Bi{sub 2}WO{sub 6} was greatly enhanced by Ba-doping. • The effect of Ba on the catalytic activity of Bi{sub 2}WO{sub 6} was studied and discussed. - Abstract: In this study, Bi{sub 2}WO{sub 6} doped with different barium contents were successfully prepared by a simple hydrothermal route at 180 °C for 12 h. The as-synthesized samples were characterized in detailed by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), UV–vis diffusere flectance spectroscopy (UV–vis DRS) and Brunauer–Emmet–Teller (BET) theory. Their photocatalytic activities were evaluated by photodegradation of Rhodamine B (RhB) under simulated solar light. As a result, the photocatalytic properties were enhanced after Ba doping and the Ba-doped Bi{sub 2}WO{sub 6} with R{sub Ba} = 0.15 showed the highest photocatalytic activities of 96.3% RhB was decomposed in 50 min. Close investigation revealed that the proper Ba doped into Bi{sub 2}WO{sub 6} could not only increases its BET surface area, decrease its crystalline size, but also act as electron traps and facilitate the separation of photogenerated electron–hole pairs. The mechanism of enhanced photocatalytic activities of Ba-doped Bi{sub 2}WO{sub 6} were further investigated.

• OSTI ID: 22475749
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Vol. 64; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BARIUM ADDITIONS
BISMUTH TUNGSTATES
DOPED MATERIALS
PHOTOCATALYSIS
SCANNING ELECTRON MICROSCOPY
SIMULATION
SPECTROSCOPY
SURFACE AREA
SYNTHESIS
TRANSMISSION ELECTRON MICROSCOPY
TRAPS
VISIBLE RADIATION
X-RAY DIFFRACTION