A superior visible light-driven photocatalyst: Europium-doped bismuth tungstate hierarchical microspheres

Tian, Yu; Zhang, Lide; Zhang, Junxi

doi:10.1016/j.jallcom.2012.05.029

Cited by 80 publications

(41 citation statements)

References 33 publications

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“…In the present study, the photocatalytic degradation of RhB by the photocatalyst followed the pseudo-first-order kinetics, evaluated using the following equation [2,6] ln…”

Section: Methodsmentioning

confidence: 99%

“…Photocatalytic semiconducting oxides are increasing attention for their applications in bacteria inactivation, water splitting and specific destruction of organic contaminants for environmental treatment [1,2]. Upon illumination with near UV radiation (k \ 400 nm), electron-hole (e -/h ? )…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, TiO 2 catalyst can absorb only ultraviolet light, which occupies about 4 % of the sunlight [4][5][6] due to 3.20 eV energy gap of TiO 2 [5,6]. In order to cover the visible light composed of 43 % of the solar spectrum, highly active photocatalyst under visible-light irradiation has been widely developed [2,6,7].…”

Section: Introductionmentioning

confidence: 99%

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Visible-light-driven photocatalysis of heterostructure Ag/Bi2WO6 nanocomposites and their photocatalytic degradation of dye under visible light irradiation

et al. 2015

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Ag/Bi 2 WO 6 nanocomposites were successfully synthesized by a combination of hydrothermal method and ultrasonic vibration. The phases, vibration modes, constituents and morphologies were characterized by X-ray diffraction, Fourier transform infrared spectroscopy, field emission scanning electron microscopy, transmission electron microscopy and X-ray photoelectron spectroscopy. The visible-light-driven photocatalytic activitiy of 0-10 wt% Ag/Bi 2 WO 6 samples was studied by determining the photodegradation of rhodamine B under xenon lamp. In this research, 10 wt% Ag/Bi 2 WO 6 nanocomposites exhibit the highest efficiency and have the promising photocatalytic properties for waste water treatment.

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“…In the present study, the photocatalytic degradation of RhB by the photocatalyst followed the pseudo-first-order kinetics, evaluated using the following equation [2,6] ln…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Visible-light-driven photocatalysis of heterostructure Ag/Bi2WO6 nanocomposites and their photocatalytic degradation of dye under visible light irradiation

et al. 2015

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“…Xu et al reported that evolution of nanoflake-like morphology by Eu doping was found to be the main factor for high activity, rather than change in the bandgap absorption properties [218]. Among the rare earth ions (La, Ce, Pr, Nd, Sm, Eu, Gd), the dopants like La, Gd and Eu was found to promote the photoactivity, while Pr doping exhibited least performance [218][219][220].…”

Section: Photocatalytic Activity Of Bi 2 Womentioning

confidence: 99%

Tungsten-based nanomaterials (WO 3 & Bi 2 WO 6 ): Modifications related to charge carrier transfer mechanisms and photocatalytic applications

Kumar

Rao

2015

Applied Surface Science

249

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“…Some researchers found a significant photoactive enhancement of Bi 2 WO 6 by doping with nonmetal elements (F, B, C, N), and the mechanisms of enhancement on photocatalytic activity were ascribed to the doped atoms which could act as electron or hole traps, and inhibit the photogenerated electrons and holes recombination (Shi et al 2009;Cui et al 2013;Shang et al 2010). Doping of Zr, Fe, Eu, Ag, and Mo in Bi 2 WO 6 has also been demonstrated to be an efficient way to improve the photocatalytic activity (Zhang et al 2011b;Guo et al 2012;Tian et al 2012;Dumrongrojthanath et al 2013;Song et al 2011). We reported that doping ZnWO 4 with Cd could enhance the photodegradation of rhodamine B under UV light irradiation (Song et al 2010).…”

Section: Introductionmentioning

confidence: 99%

Enhanced photocatalytic activity of cadmium-doped Bi2WO6 nanoparticles under simulated solar light

Song

Huang

et al. 2015

J Nanopart Res

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Novel cadmium-doped Bi 2 WO 6 nanoparticles with different Cd contents have been synthesized by a one-step route using ethylene glycol and water as solvents at 180°C for 12 h. The as-synthesized samples were characterized in detailed by SEM, XRD, EDS, HRTEM, UV-Vis DRS, BET techniques, and so on. The results shown that with the increase of the Cd 2? addition, the crystal structure, lattice space, and absorption edge were not significantly changed and the calculated band gap value was 2.58 eV. However, the flower-like Bi 2 WO 6 sphere was gradually destroyed. Simultaneously, the surface area and photocurrent responses of the catalysts were greatly increased. Photocatalytic activity of the Cd-doped Bi 2 WO 6 samples was determined by monitoring the change of RhB concentration under simulated solar light. The results revealed that cadmium doping greatly improved the photocatalytic efficiency of Bi 2 WO 6 . The Bi 2 WO 6 sample with R Cd = 0.05 displayed the highest photocatalytic activity, and the degradation rate is about two times greater than pure Bi 2 WO 6 . Moreover, the Cd-Bi 2 WO 6 photocatalyst remained stable even after five consecutive cycles. A possible mechanism of photocatalytic activity enhancement on basis of the experimental results was proposed.

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A superior visible light-driven photocatalyst: Europium-doped bismuth tungstate hierarchical microspheres

Cited by 80 publications

References 33 publications

Visible-light-driven photocatalysis of heterostructure Ag/Bi2WO6 nanocomposites and their photocatalytic degradation of dye under visible light irradiation

Visible-light-driven photocatalysis of heterostructure Ag/Bi2WO6 nanocomposites and their photocatalytic degradation of dye under visible light irradiation

Tungsten-based nanomaterials (WO 3 & Bi 2 WO 6 ): Modifications related to charge carrier transfer mechanisms and photocatalytic applications

Enhanced photocatalytic activity of cadmium-doped Bi2WO6 nanoparticles under simulated solar light

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