Thumbnail
Access Restriction
Open

Author Li, Wen Ting ♦ Huang, Wan Zhen ♦ Zhou, Huan ♦ Yin, Hao Yong ♦ Zheng, Yi Fan ♦ Song, Xu Chun
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword 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
Abstract 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.
ISSN 00255408
Educational Use Research
Learning Resource Type Article
Publisher Date 2015-04-15
Publisher Place United States
Journal Materials Research Bulletin
Volume Number 64


Open content in new tab

   Open content in new tab