Hydrothermal synthesis of hierarchical rose-like Bi2WO6 microspheres with high photocatalytic activities under visible-light irradiation

He, Jing; Wang, Weimin; Long, Fei; Zou, Zhengguang; Fu, Zhengyi; Xu, Zhe

doi:10.1016/j.mseb.2012.04.018

Cited by 60 publications

(30 citation statements)

References 35 publications

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“…All diffraction peaks can be assigned to the orthorhombic Bi 2 WO 6 (JCPDS no. 39-0256), which are consistent with the results reported by other researchers [6,12,30]. No peaks of impurities were detected from these patterns.…”

Section: Resultssupporting

confidence: 92%

“…In detail, the bands at 791 and 823 cm −1 are associated with antisymmetric and symmetric modes of terminal O W O, respectively. The band at 306 cm −1 can be assigned to translational modes involving simultaneous motions of Bi 3+ and WO 6 6− . The intensity of the peak at 723 cm −1 is interpreted as an antisymmerric bridging mode associated with the tungstate chain.…”

Section: Resultsmentioning

confidence: 99%

“…However, the deficiency of requiring UV light for effective photocatalysis severely hinders the overall process to be used in practical. Therefore, the development of visible light responsive photocatalysts has become one of imperative topics in current photocatalysis research [5][6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

“…Bi 2 WO 6 is the simplest member of the Aurivillius family (when n = 1) with general formula Bi 2 A n−1 B n O 3n+3 (A = Ca, Sr, Ba, Pb, Bi, Na, K and B = Ti, Nb, Ta, Mo, W, Fe), which usually have the layer structures and unique properties [5,6,[12][13][14]. Recent years, Bi 2 WO 6 has attracted extensive attentions due to its excellent intrinsic physical and chemical properties such as ferroelectric piezoelectricity, catalytic behavior, and nonlinear dielectric susceptibility [15,16].…”

Section: Introductionmentioning

confidence: 99%

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Controllable synthesis and photocatalytic activity of spherical, flower-like and nanofibrous bismuth tungstates

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et al. 2014

Materials Science and Engineering: B

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Section: Resultssupporting

confidence: 92%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Controllable synthesis and photocatalytic activity of spherical, flower-like and nanofibrous bismuth tungstates

Lin

Liu

Guo

et al. 2014

Materials Science and Engineering: B

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“…The composite photocatalyst exhibited much higher photocatalytic activities compared to other synthesis methods [1]. At present, much effort has been devoted to prepare ecofriendly materials to apply in environmental pollution remediation process and to understand its phasial state, morphology and surface area [7].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Nano Materials by Microwave Assisted Hydrothermal Method

et al. 2015

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Bismuth tungstate nano materials have been successfully synthesized by microwave assisted hydrothermal method. Bismuth nitrate (Bi(NO 3 ) 3 .5H 2 O) and sodium tungstate (Na 2 WO 4 .2H 2 O) are used as a starting material for the preparation of nano materials and solution pH was maintained to 3. The prepared material was characterized by X-ray diffraction (XRD) to study the phase state, whereas surface morphology was observed by Scanning Electron Microscopy (SEM). The surface area was determined by Brunauer-Emmett-Teller (BET) method. The results revealed that materials are crystalline in nature having crystallite size of ~ 24 nm with surface area of 6.5 m 2 /g. SEM image of prepared materials showed a unique discrete hierarchical morphology. The prepared material showed visible light active photocatalytic nature for the decomposition of Rhodamine B.

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Metastable β‐Bi₂O₃ Nanoparticles with Potential for Photocatalytic Water Purification Using Visible Light Irradiation

et al. 2013

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Photocatalytic studies under visible light irradiation using nanosized β-Bi2O3 are reported. β-Bi2O3 nanoparticles are prepared starting from the well-defined bismuth oxido cluster [Bi38O45(OMc)24(DMSO)9]⋅2 DMSO⋅7 H2O (OMc=O2CC3H5) using a straightforward hydrolysis and annealing protocol. Powder X-ray diffraction studies, transmission electron microscopy, diffuse reflectance UV/Vis spectroscopy and nitrogen adsorption measurements (using the Brunauer–Emmett–Teller (BET) theory) are used for the characterization of the as-prepared β-Bi2O3. By time-dependent annealing, the crystallite size can be controlled between (17±2) nm and (45±5) nm with BET surface areas of 7 to 29 m2 g−1. The indirect band gap of the as-prepared β-Bi2O3 amounts to (2.15±0.05) eV. The decomposition rates for rhodamine B (RhB) solutions are in the range of 2.46×10−5 to 4.01×10−4 s−1 and depend on the crystallite size, amount of catalyst and concentration of RhB. Photocorrosion experiments have shown the formation of Bi2O2CO3 after several catalytic cycles. However, the catalyst can be recycled to phase-pure β-Bi2O3 nanoparticles by annealing for one hour under argon atmosphere at 380 °C. Furthermore, the photocatalytic activity of as-prepared β-Bi2O3 nanoparticles for the decomposition of phenol, 4-chlorophenol, 2,4-dichlorphenol, 4-nitrophenol, triclosan and ethinyl estradiol is demonstrated.

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Hydrothermal synthesis of hierarchical rose-like Bi2WO6 microspheres with high photocatalytic activities under visible-light irradiation

Cited by 60 publications

References 35 publications

Controllable synthesis and photocatalytic activity of spherical, flower-like and nanofibrous bismuth tungstates

Controllable synthesis and photocatalytic activity of spherical, flower-like and nanofibrous bismuth tungstates

Synthesis of Nano Materials by Microwave Assisted Hydrothermal Method

Metastable β‐Bi₂O₃ Nanoparticles with Potential for Photocatalytic Water Purification Using Visible Light Irradiation

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Hydrothermal synthesis of hierarchical rose-like Bi2WO6 microspheres with high photocatalytic activities under visible-light irradiation

Cited by 60 publications

References 35 publications

Controllable synthesis and photocatalytic activity of spherical, flower-like and nanofibrous bismuth tungstates

Controllable synthesis and photocatalytic activity of spherical, flower-like and nanofibrous bismuth tungstates

Synthesis of Nano Materials by Microwave Assisted Hydrothermal Method

Metastable β‐Bi2O3 Nanoparticles with Potential for Photocatalytic Water Purification Using Visible Light Irradiation

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Product

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Metastable β‐Bi₂O₃ Nanoparticles with Potential for Photocatalytic Water Purification Using Visible Light Irradiation