Enhanced photocatalytic and photo-Fenton catalytic activity of BiFeO3 polyhedron decorated by AuAg alloy nanoparticles

Sun, Xiaofeng; Di, Lijing; Tang, Xian; Zhou, Yongjian; Li, Hongqin; Gao, Yufang; Yang, Hua

doi:10.1007/s10854-020-04844-z

Cited by 26 publications

(6 citation statements)

References 59 publications

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“…Additionally, the corresponding EIS spectra of pure BiOBr and the 8% In 2 O 3 /BiOBr sample are presented in Figure S1c. It can be seen that the radius of the plot for the 8% In 2 O 3 /BiOBr sample is smaller than that of BiOBr, suggesting the promotion of charge transfer in the In 2 O 3 /BiOBr composite . The inset of Figure S1c shows the corresponding equivalent circuit of the above EIS spectra, where the R s , CPE, and R ct are the solution resistance, phasing element, and resistance for charge transfer in the electrode/electrolyte interface, respectively.…”

Section: Resultsmentioning

confidence: 99%

S-Scheme In₂O₃ Nanoparticle/BiOBr Nanoplate Heterojunctions for Improved Photocatalytic Dye Degradation and Cr(VI) Reduction

Tang

Sun

et al. 2022

ACS Appl. Nano Mater.

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The In2O3 nanoparticles were homogeneously attached on the BiOBr nanoplate surface to obtain S-scheme In2O3/BiOBr heterojunction photocatalysts by a hydrothermal route. The purity, crystal structure, chemical state, morphology, light absorption property, and photogenerated charge behavior of composites were investigated by XRD, SEM, TEM, HRTEM, XPS, UV–vis DRS, PL, ESR, and electrochemical tests. The removal of dyes (acid orange 7 (AO7), acid orange 10 (AO10), and rhodamine B (RhB)) and Cr(VI) was employed to evaluate the photocatalytic performance of In2O3/BiOBr composites irradiated by simulated sunlight. The results indicate that the photocatalytic performance of BiOBr can be remarkably promoted after the decoration of In2O3 nanoparticles, and the best photocatalytic activity was achieved over an 8% In2O3/BiOBr sample. The 8% In2O3/BiOBr sample also indicates outstanding synergistic photocatalytic performance for the removal of the heavy metal ion/dye mixture (AO7/Cr(VI) and RhB/Cr(VI)). It is found that the decoration of In2O3 nanoparticles can accelerate the transfer and separation of photoinduced electrons and holes in BiOBr nanoplates. The energy band structure, work function, and Fermi level of BiOBr and In2O3 were computed through the density functional theory calculation. Based on the above investigation, the photocatalytic mechanism of the S-scheme In2O3/BiOBr composite was discussed.

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Section: Resultsmentioning

confidence: 99%

S-Scheme In₂O₃ Nanoparticle/BiOBr Nanoplate Heterojunctions for Improved Photocatalytic Dye Degradation and Cr(VI) Reduction

Tang

Sun

et al. 2022

ACS Appl. Nano Mater.

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“…The 5%CuS/BTO and 5%CuS/(1%Ag/BTO) composites display a visiblelight absorption that is obviously stronger than bare BaTiO 3 . The differential curves of the UV-Vis DRS spectra can be employed to estimate the band gap (E g ) of BaTiO 3 in the samples, 41 as shown in Fig. 2d.…”

Section: Resultsmentioning

confidence: 99%

Photocatalytic Application of Ag-Decorated CuS/BaTiO3 Composite Photocatalysts for Degrading RhB

Wang

Sun

et al. 2021

Journal of Elec Materi

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Herein, binary CuS/BTO and ternary CuS/Ag/BTO composite photocatalysts have been fabricated by anchoring CuS and Ag nanoparticles onto BaTiO 3 (BTO) polyhedra. The as-prepared composite photocatalysts were characterized by means of the techniques of transmission/scanning electron microscopy, x-ray powder diffraction, ultraviolet-visible diffuse reflectance spectroscopy, x-ray photoelectron spectroscopy and photoluminescence spectroscopy. Transient photocurrent and electrochemical impedance spectroscopy measurements suggest that the ternary 5%CuS/(1%Ag/BTO) composite possesses the highest separation efficiency of electron/hole pairs. The photodegradation experiments were conducted by using simulated sunlight as the light source to decompose Rhodamine B in water solution. The 5%CuS/(1%Ag/BTO) and 5%CuS/BTO composites are demonstrated to have the highest and second highest photodegradation activity, respectively. As compared with that of bare BaTiO 3 and CuS, the photoactivity of 5%CuS/(1%Ag/BTO) is increased to 3.3 and 2.0 times, respectively. The electron/hole separation mechanism and the role of localized surface plasmon resonance of Ag nanoparticles in the dye photodegradaton were systematically investigated.

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“…It is well known that the VB potential of a p-type semiconductor is very close to its flat band potential due to the negligible gap between them. 74 As a result, the VB potential of Bi 2 O 3 is B3.20 eV per NHE. Based on the band gap of Bi 2 O 3 (B2.87 eV), the CB/VB of Bi 2 O 3 is estimated to be 0.33/3.20 V.…”

Section: Photocatalytic Mechanismmentioning

confidence: 99%

Non-noble-metal TiC-nanoparticle-promoted charge separation and photocatalytic degradation performance on Bi₂O₃ microrods: degradation pathway and mechanism investigation

Xian,

Ma,

et al. 2023

Phys. Chem. Chem. Phys.

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Enhanced photocatalytic and photo-Fenton catalytic activity of BiFeO3 polyhedron decorated by AuAg alloy nanoparticles

Cited by 26 publications

References 59 publications

S-Scheme In₂O₃ Nanoparticle/BiOBr Nanoplate Heterojunctions for Improved Photocatalytic Dye Degradation and Cr(VI) Reduction

S-Scheme In₂O₃ Nanoparticle/BiOBr Nanoplate Heterojunctions for Improved Photocatalytic Dye Degradation and Cr(VI) Reduction

Photocatalytic Application of Ag-Decorated CuS/BaTiO3 Composite Photocatalysts for Degrading RhB

Non-noble-metal TiC-nanoparticle-promoted charge separation and photocatalytic degradation performance on Bi₂O₃ microrods: degradation pathway and mechanism investigation

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Enhanced photocatalytic and photo-Fenton catalytic activity of BiFeO3 polyhedron decorated by AuAg alloy nanoparticles

Cited by 26 publications

References 59 publications

S-Scheme In2O3 Nanoparticle/BiOBr Nanoplate Heterojunctions for Improved Photocatalytic Dye Degradation and Cr(VI) Reduction

S-Scheme In2O3 Nanoparticle/BiOBr Nanoplate Heterojunctions for Improved Photocatalytic Dye Degradation and Cr(VI) Reduction

Photocatalytic Application of Ag-Decorated CuS/BaTiO3 Composite Photocatalysts for Degrading RhB

Non-noble-metal TiC-nanoparticle-promoted charge separation and photocatalytic degradation performance on Bi2O3 microrods: degradation pathway and mechanism investigation

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S-Scheme In₂O₃ Nanoparticle/BiOBr Nanoplate Heterojunctions for Improved Photocatalytic Dye Degradation and Cr(VI) Reduction

S-Scheme In₂O₃ Nanoparticle/BiOBr Nanoplate Heterojunctions for Improved Photocatalytic Dye Degradation and Cr(VI) Reduction

Non-noble-metal TiC-nanoparticle-promoted charge separation and photocatalytic degradation performance on Bi₂O₃ microrods: degradation pathway and mechanism investigation