Synthesis of Fe-doped WO3 nanostructures with high visible-light-driven photocatalytic activities

Song, Hui; Li, Yaguang; Lou, Zirui; Xiao, Mu; Hu, Liang; Ye, Zhizhen; Zhu, Liping

doi:10.1016/j.apcatb.2014.11.020

Cited by 183 publications

(77 citation statements)

References 45 publications

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“…The values of n ¼ 1 and 4 are corresponding to g-C 3 N 4 and WO 3 respectively. 53,54 From Fig. 5(b), the values of the absorption bands located at 456 and 458 nm are ascribed to g-C 3 N 4 and WO 3 , exhibiting good absorption ability in the visible region, and the corresponding band gaps are 2.71 and 2.87 eV respectively (Fig.…”

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confidence: 99%

Facile synthesis of g-C₃N₄ nanosheets loaded with WO₃ nanoparticles with enhanced photocatalytic performance under visible light irradiation

et al. 2017

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Graphitic carbon nitride (g-C 3 N 4 ) nanosheets loaded with WO 3 nanoparticles were prepared via heat treatment of g-C 3 N 4 together with WO x -EDA nanobelts. The thermal treatment temperature and WO x -EDA precursor play the key role in enhancing the interaction between WO 3 nanoparticles and g-C 3 N 4 nanosheets, because the temperature of thermal decomposition of WO x -EDA ($400 C) is close to the thermal exfoliation temperature of g-C 3 N 4 . The structure evolution and promotion effect of the nanocomposites in photocatalytic performance were well studied. It is found that WO 3 nanoparticles uniformly dispersed on the surface of the g-C 3 N 4 nanosheets, and the close integration of WO 3 and g-C 3 N 4 lead to the high photocatalytic activity in the degradation of RhB under visible light irradiation.Meanwhile, a larger specific area and increase of visible light absorption are also of benefit to speed up the degradation of organic dye. Also, the mechanism of the photocatalytic reaction and its reutilization properties were investigated.

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confidence: 99%

Facile synthesis of g-C₃N₄ nanosheets loaded with WO₃ nanoparticles with enhanced photocatalytic performance under visible light irradiation

et al. 2017

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“…The former method is relevant to the structural modification of WO 3 by means of incorporating other semiconductors with appropriate electronic structures, metal and nonmetal elements, and doping with metal ions [9][10][11][12][13][14][15][16][17][18]. With suitable ingredients, accumulated electrons on conduction band of WO 3 tend to be completely transferred and accordingly, the recombination rate of photogenerated hole-electron pairs is greatly depressed [15].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization, and visible-light-driven photocatalytic performance of W-SBA15

Chang

Wang

Luo

et al. 2016

Journal of Colloid and Interface Science

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a b s t r a c tA series of tungsten-containing mesoporous SBA15 with different tungsten contents were prepared through a direct co-condensation sol-gel method and then analyzed by various techniques. XRD patterns revealed that the original mesoporous morphology was maintained after introducing tungsten species and forms of tungsten species were changed from incorporated tungsten to isolated tungsten species or low oligomeric tungsten oxide species, and finally to crystalline WO 3 with the increase of tungsten precursor content, which were also proven by HRTEM images, UV-Vis DRS, and FT-IR spectra. The W-SBA15 samples exhibited satisfactory photocatalytic performance toward degradation of dye Rhodamine B (RhB) and 2,4-dichlorophenol (2,4-DCP). In particular, the best candidate, sample 10%W-SBA15 showed an apparent reaction rate constant for RhB that was nearly 10 times as high as that of bulk WO 3 . The enhancement of photocatalytic capability was attributed to the mesoporous morphology with enlarged surface areas, negatively charged surface, and favorable tungsten forms such as incorporated tungsten, isolated tungsten or low oligomeric tungsten oxide species. In addition, active radicals trapping experiments and DMPO spin-trapping ESR spectra indicated that photogenerated holes were major oxidative species during photocatalysis.

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“…From Table 3, it was found that FSP-synthesized WO 3 has better efficiency in furfural degradation than commercial WO 3 because FSPsynthesized WO 3 has larger surface area than commercial WO 3 , resulted in more active sites. According to the equation (6), the highest k is belonged to 3 wt% Fe-doped WO 3 , meaning that doping Fe at 3 % by weight is the most facilitated in furfural photocatalytic degradation. According to the results from …”

Section: Photocatalytic Activitymentioning

confidence: 99%

“…Thus, in order to increase the photocatalytic performance of WO 3 , the addition of transition metals could either be alleviating of electrons-holes recombination process or supporting electrons to go to conduction band easier. Recently, there have been many studies and developments of tungsten oxide by doping of some transition metals, for example Fe and Mo [6][7] or making composite with other metal oxide such as TiO 2 , CuO, AgIO 3 [8][9][10][11][12]. In this research, WO 3 samples were synthesized using flame spray pyrolysis, doped with Fe/Cu/Ti at different amount by wt%, characterized and tested the photocatalytic performance with 3 hours furfural degradation reaction under visible light.…”

Section: Introductionmentioning

confidence: 99%

Effect of doping Fe/Cu/Ti on WO₃ on furfural degradation

2018

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Abstract. This research improved tungsten oxide catalysts to increase efficiency in photocatalytic degradation of furfural under visible light. The aim of this research was to compare the efficiency of modified tungsten oxide with undoped and commercial tungsten oxide. Tungsten oxide nanoparticles were doped with 3 single metals, which were Fe/Cu/Ti at 1%wt, 2%wt, and 3%wt, synthesized by flame spray pyrolysis technique (FSP) and then characterization by X-Ray Diffraction (XRD), N2 adsorption/desorption (BET surface area analysis), UV-Vis Spectroscopy (UV-Vis). Photocatalytic degradation experiments using doped WO3 were carried out with 5 ppm initial concentration of furfural solution using 0.6 M catalyst concentration under visible light. From the results, FSP-synthesized WO3 has better efficiency in furfural degradation than the commercial WO3. All catalysts have mesoporous structure because an average pore size is in the range of 6-10 nm. Among all synthesized and doped WO3, it can be concluded that 3%wt Fedoped tungsten oxide provides the highest acceleration rate in photocatalytic degradation of furfural.

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Synthesis of Fe-doped WO3 nanostructures with high visible-light-driven photocatalytic activities

Cited by 183 publications

References 45 publications

Facile synthesis of g-C₃N₄ nanosheets loaded with WO₃ nanoparticles with enhanced photocatalytic performance under visible light irradiation

Facile synthesis of g-C₃N₄ nanosheets loaded with WO₃ nanoparticles with enhanced photocatalytic performance under visible light irradiation

Synthesis, characterization, and visible-light-driven photocatalytic performance of W-SBA15

Effect of doping Fe/Cu/Ti on WO₃ on furfural degradation

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Synthesis of Fe-doped WO3 nanostructures with high visible-light-driven photocatalytic activities

Cited by 183 publications

References 45 publications

Facile synthesis of g-C3N4 nanosheets loaded with WO3 nanoparticles with enhanced photocatalytic performance under visible light irradiation

Facile synthesis of g-C3N4 nanosheets loaded with WO3 nanoparticles with enhanced photocatalytic performance under visible light irradiation

Synthesis, characterization, and visible-light-driven photocatalytic performance of W-SBA15

Effect of doping Fe/Cu/Ti on WO3 on furfural degradation

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Facile synthesis of g-C₃N₄ nanosheets loaded with WO₃ nanoparticles with enhanced photocatalytic performance under visible light irradiation

Facile synthesis of g-C₃N₄ nanosheets loaded with WO₃ nanoparticles with enhanced photocatalytic performance under visible light irradiation

Effect of doping Fe/Cu/Ti on WO₃ on furfural degradation