Monoclinic BiVO4 with regular morphologies: Hydrothermal synthesis, characterization and photocatalytic properties

Li, Haibin; Liu, Guocong; Xue-chen, Duan

doi:10.1016/j.matchemphys.2009.01.014

Cited by 129 publications

(42 citation statements)

References 29 publications

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“…A higher surface area of photocatalyst could promote adsorption, desorption, and diffusion of reactants, which are favorable to obtain a high photocatalytic activity [26]. However, photocatalytic performance depends on many factors such as crystallinity, morphology, and particle size [27][28][29][30].…”

Section: Photocatalytic Measurementsmentioning

confidence: 99%

Highly efficient visible light-induced photocatalytic degradation of methylene blue over InVO4/BiVO4 composite photocatalyst

Lamdab

Wetchakun²,

Phanichphant³

et al. 2015

J Mater Sci

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A highly efficient and visible light responsive photocatalyst was developed by indium vanadate (InVO 4 )/ bismuth vanadate (BiVO 4 ) composite photocatalyst. The samples were characterized by X-ray diffraction (XRD), Brunauer-Emmett-Teller, scanning electron microscopy, transmission electron microscopy (TEM), UV-Vis diffuse reflectance spectra, XPS, zeta potential, and photoluminescence techniques. The XRD, TEM, and XPS results indicated the prepared sample was actually a two-phase composite: InVO 4 and BiVO 4 . Photocatalytic activities of all catalysts were evaluated for the degradation of methylene blue in aqueous solution under visible light irradiation. The highest activity was obtained in the InVO 4 /BiVO 4 composite using 0.8:0.2 mol ratio of InVO 4 :BiVO 4 . On the basis of the calculated energy band positions, the mechanism of enhanced photocatalytic activity was discussed.

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Section: Photocatalytic Measurementsmentioning

confidence: 99%

Highly efficient visible light-induced photocatalytic degradation of methylene blue over InVO4/BiVO4 composite photocatalyst

Lamdab

Wetchakun²,

Phanichphant³

et al. 2015

J Mater Sci

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show abstract

“…As a new type semiconductor photocatalyst, bismuth vanadate (BiVO 4 ) has drawn great attention, due to its nontoxicity, high stability, narrow band gap and high sunlight utilization. BiVO 4 possesses three crystal structures: monoclinic scheelite structure (ms-BiVO 4 ), tetragonal scheelite structure (ts-BiVO 4 ) and tetragonal zircon structure (tz-BiVO 4 ) [5]. The ms-BiVO 4 exhibits the best photocatalytic activity under visible light irradiation owing to the relatively narrow band gap (2.4 eV), while the tz-BiVO 4 with a 2.9 eV band gap mainly responds to the UV-light irradiation [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Structural transformation of Sm3+ doped BiVO4 with high photocatalytic activity under simulated sun-light

Luo

Tan

Dong

et al. 2015

Applied Surface Science

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“…This phenomenon could be due to many factors such as morphology, crystallite size, phase structure and amount of BiVO4 as previously described in Ref. [18][19][20]. Therein, various sizes and morphologies of BiVO4 such as flower-like, plate-like and cuboid-like shapes exhibited different band gap energies and optical absorbance values.…”

Section: Uv-vis Diffuse Reflectance Spectrophotometry Analysismentioning

confidence: 71%

“…Photocatalytic activity of cerium dioxide (CeO2) with wide band gap energy of 3.2 eV has been intensively studied under UV irradiation due to its non-toxicity, low cost, and chemical stability [2][3]. However, the broad band gap energy of this metal oxide limits its further use in solar light and visible light [4]. Therefore, many researches have been focused on narrowing the band gap energy of CeO2 photocatalyst [5].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of the Novel BiVO4/CeO2 Nanocomposites

Chaiwichian

Inceesungvorn

Pingmuang

et al. 2012

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Abstract. Novel BiVO4/CeO2 nanocomposites were synthesized by the hydrothermal method combined with the homogeneous precipitation method. The mole ratios of BiVO4:CeO2 were 0.4:0.6, 0.5:0.5, and 0.6:0.4. The obtained BiVO4/CeO2 nanocomposites were characterized by X-ray diffraction (XRD) for phase composition and crystallinity. Particle sizes, morphology and elemental composition of BiVO4/CeO2 nanocomposites were examined by scanning electron microscopy (SEM), transmission electron microscopy (TEM), and energy dispersive X-ray spectroscopy (EDS). The Brunauer, Emmett and Teller (BET) adsorption-desorption of nitrogen gas for specific surface area determination at the temperature of liquid nitrogen was performed on all samples. UV-vis diffuse reflectance spectra (UV-vis DRS) were used to identify the absorption range and band gap energy of the composite catalysts. The results indicated that BiVO4/CeO2 samples retained monoclinic scheelite and fluorite structures. The morphologies of nanocomposite samples consisted of rod-like, plate-like and spheroidal shapes. Specific surface area (SSABET) of the novel synthesized catalysts drastically increased from 38-62 m 2 /g whereas an average BET-equivalent particle diameter (dBET) significantly decreased from 30-12 nm, upon increasing the amount of CeO2 in the BiVO4/CeO2 composite. The absorption spectra of all nanocomposite samples were shifted to the visible region, suggesting the potential application of this novel composite as an active visible-light driven photocatalyst.

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Monoclinic BiVO4 with regular morphologies: Hydrothermal synthesis, characterization and photocatalytic properties

Cited by 129 publications

References 29 publications

Highly efficient visible light-induced photocatalytic degradation of methylene blue over InVO4/BiVO4 composite photocatalyst

Highly efficient visible light-induced photocatalytic degradation of methylene blue over InVO4/BiVO4 composite photocatalyst

Structural transformation of Sm3+ doped BiVO4 with high photocatalytic activity under simulated sun-light

Synthesis and Characterization of the Novel BiVO4/CeO2 Nanocomposites

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