Preparation and photocatalytic activity of porous Bi5O7I nanosheets

Yang, Jun; Xu, Longjun; Liu, Chenglun; Xie, Taiping

doi:10.1016/j.apsusc.2014.07.055

Cited by 84 publications

(38 citation statements)

References 32 publications

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“…4b. The values of band gap energy of pure Bi 5 O 7 I, 30 wt% SrTiO 3 /Bi 5 O 7 I nanocomposite and pure SrTiO 3 are about 2.31, 2.38, and 3.2 eV, respectively, which are consistent with the reported values in the relevant literature [38, 39]. …”

Section: Resultssupporting

confidence: 90%

Fabrication and Photocatalytic Property of Novel SrTiO3/Bi5O7I Nanocomposites

Xia

et al. 2018

Nanoscale Res Lett

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The novel SrTiO3/Bi5O7I nanocomposites were successfully fabricated by a thermal decomposition approach. The as-prepared samples were characterized by XRD, XPS, SEM, EDS, FTIR, DRS and PL spectra. The results show that the SrTiO3/Bi5O7I nanocomposites are composed of perovskite SrTiO3 nanoparticles and tetragonal Bi5O7I nanorods. The SrTiO3/Bi5O7I nanocomposites exhibit an excellent photocatalytic performance for the degradation of RhB solution under simulated solar light irradiation, which is superior to that of pristine Bi5O7I and SrTiO3. In particular, the 30 wt% SrTiO3/Bi5O7I nanocomposite is found as the optimal composites, over which the dye degradation reaches 89.6% for 150 min of photocatalysis. The photocatalytic degradation rate of the 30 wt% SrTiO3/Bi5O7I nanocomposite is found to be 3.97 times and 12.5 times higher than that of bare Bi5O7I and SrTiO3, respectively. The reactive species trapping experiments suggest that and holes are the main active species responsible for the RhB degradation. In addition, the PL spectra elucidate the effective separation of photoinduced electron-hole pairs. Further, the possible photocatalytic mechanism of the SrTiO3/Bi5O7I nanocomposites is also elucidated based on the experimental evidences.

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Section: Resultssupporting

confidence: 90%

Fabrication and Photocatalytic Property of Novel SrTiO3/Bi5O7I Nanocomposites

Xia

et al. 2018

Nanoscale Res Lett

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“…UV-vis diffuse reflectance spectrophotometry was a suitable and important technique to determine the light absorption for semiconductor photocatalysts [27]. Figure 5 showed UV-vis diffuse reflectance spectra (UV-vis DRS) of BiVO 4 , BiVO 4 /Mn 1−x Zn x Fe 2 O 4 , and Ag/BiVO 4 /Mn 1−x Zn x Fe 2 O 4 .…”

Section: Resultsmentioning

confidence: 99%

“…The repeatability and stability were necessary in the practical photocatalytic application [27]. Cycling tests were employed to evaluate the photocatalytic stability of Ag/BiVO 4 /Mn 1−x Zn x Fe 2 O 4 , and the degradation rate of RhB was described in Figure 8.…”

Section: Resultsmentioning

confidence: 99%

Facile Synthesis of Magnetic Photocatalyst Ag/BiVO4/Mn1−xZnxFe2O4 and Its Highly Visible-Light-Driven Photocatalytic Activity

Xie

Liu

et al. 2018

Materials

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Ag/BiVO4/Mn1−xZnxFe2O4 was synthesized with a dip-calcination in situ synthesis method. This work was hoped to provide a simple method to synthesis three-phase composite. The phase structure, optical properties and magnetic feature were confirmed by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectrometer (XPS), transmission electron microscopy (TEM), ultraviolet-visible diffuse reflectance spectrophotometer (UV-vis DRS), and vibrating sample magnetometer (VSM). The photocatalytic activity was investigated by Rhodamine B (RhB) photo-degradation under visible light irradiation. The photo-degradation rate of RhB was 94.0~96.0% after only 60 min photocatalytic reaction under visible light irradiation, revealing that it had an excellent visible-light-induced photocatalytic activity. In the fifth recycle, the degradation rate of Ag/BiVO4/Mn1−xZnxFe2O4 still reached to 94.0%. Free radical tunnel experiments confirmed the dominant role of •O2− in the photocatalytic process for Ag/BiVO4/Mn1−xZnxFe2O4. Most importantly, the mechanism that multifunction Ag could enhance photocatalytic activity was explained in detail.

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“…Bismuth oxychloride (BiOCl) semiconductor with layered structure has shown efficient photocatalytic activity and exhibited promising applications in catalysts, gas sensors, pigments, and pharmaceuticals [1][2][3][4]. Hence, considerable attention has been drawn to the BiOCl semiconductors, which could be endowed with strong visible light absorption and superior photocatalytic activities [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%