A magnetic separable 3D hierarchical BiOI/rGO/Fe3O4 catalyst for degradation of Rhodamine B under visible light: Kinetic studies and mechanism of degradation

Premalatha, N.; Miranda, Lima Rose

doi:10.1016/j.mseb.2021.115576

Cited by 16 publications

(6 citation statements)

References 52 publications

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“…To reveal the degradation pathway and mechanism of RhB with the Bi2O3 photocatalyst, the intermediates were determined by using LC-MS, as depicted in Figure 10. According to Figure 10 According to the intermediates analyzed with LC-MS during the reaction and in the previous literature [86,87], a possible RhB degradation pathway was proposed, as shown in Figure 11. Figure 11 displays that the degradation process of RhB mainly consisted of five steps: deethylation, decarboxylation, de-amination, ring opening, and mineralization.…”

Section: Photodegradation Pathways Of Rhb With Bi2o3mentioning

confidence: 82%

Investigation of the Photocatalytic Performance, Mechanism, and Degradation Pathways of Rhodamine B with Bi2O3 Microrods under Visible-Light Irradiation

Ma,

Tang,

et al. 2024

Materials

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In the present work, the photodegradation of Rhodamine B with different pH values by using Bi2O3 microrods under visible-light irradiation was studied in terms of the dye degradation efficiency, active species, degradation mechanism, and degradation pathway. X-ray diffractometry, polarized optical microscopy, scanning electron microscopy, fluorescence spectrophotometry, diffuse reflectance spectra, Brunauer–Emmett–Teller, X-ray photoelectron spectroscopy, Fourier-transform infrared spectroscopy, UV–visible spectrophotometry, total organic carbon, and liquid chromatography–mass spectroscopy analysis techniques were used to analyze the crystal structure, morphology, surface structures, band gap values, catalytic performance, and mechanistic pathway. The photoluminescence spectra and diffuse reflectance spectrum (the band gap values of the Bi2O3 microrods are 2.79 eV) reveals that the absorption spectrum extended to the visible region, which resulted in a high separation and low recombination rate of electron–hole pairs. The photodegradation results of Bi2O3 clearly indicated that Rhodamine B dye had removal efficiencies of about 97.2%, 90.6%, and 50.2% within 120 min at the pH values of 3.0, 5.0, and 7.0, respectively. In addition, the mineralization of RhB was evaluated by measuring the effect of Bi2O3 on chemical oxygen demand and total organic carbon at the pH value of 3.0. At the same time, quenching experiments were carried out to understand the core reaction species involved in the photodegradation of Rhodamine B solution at different pH values. The results of X-ray photoelectron spectroscopy, Fourier-transform infrared spectroscopy, and X-ray diffractometer analysis of pre- and post-Bi2O3 degradation showed that BiOCl was formed on the surface of Bi2O3, and a BiOCl/Bi2O3 heterojunction was formed after acid photocatalytic degradation. Furthermore, the catalytic degradation of active substances and the possible mechanism of the photocatalytic degradation of Rhodamine B over Bi2O3 at different pH values were analyzed based on the results of X-ray diffractometry, radical capture, Fourier-transform infrared spectroscopy, total organic carbon analysis, and X-ray photoelectron spectroscopy. The degradation intermediates of Rhodamine B with the Bi2O3 photocatalyst in visible light were also identified with the assistance of liquid chromatography–mass spectroscopy.

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Section: Photodegradation Pathways Of Rhb With Bi2o3mentioning

confidence: 82%

Investigation of the Photocatalytic Performance, Mechanism, and Degradation Pathways of Rhodamine B with Bi2O3 Microrods under Visible-Light Irradiation

Ma,

Tang,

et al. 2024

Materials

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“…As shown in Figure S2, Supporting Information, the respective peaks at 529, 659, and 513 cm −1 correspond to the T 2g and A 1g coordination states in magnetite, whereas the peaks at 620, 394 , and 579 cm −1 are attributed to the E g state in hematite. [ 42,43 ] In the composite samples, the I D / I G ratio increases (0.664 compared to 0.425 of only rGO) due to defects in sp 2 latticed formed incorporation of the metal‐oxide within the graphitic lattice. Furthermore, a shift in both D‐ and G‐bands to 1340 and 1573 cm −1 caused by charge transfer from rGO to iron oxide suggests the electronic interactions between the component of the composite.…”

Section: Resultsmentioning

confidence: 99%

“…Furthermore, a shift in both D‐ and G‐bands to 1340 and 1573 cm −1 caused by charge transfer from rGO to iron oxide suggests the electronic interactions between the component of the composite. [ 43 ]…”

Section: Resultsmentioning

confidence: 99%

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Laser Processed Magnetite Nanoparticles Embedded on rGO Composites for Efficient Electrocatalytic Oxygen Evolution Reaction

Sathiyan

Lal

Borenstein

2022

Advanced Sustainable Systems

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“…Firstly, Fe 3 O 4 nanoparticles (NPs) were synthesized according to a previous report 36 (the details is shown in the ESI †). Thereaer, copper-mediated magnetic MIP (Cu-mMIP) was prepared by a surface-imprinted polymerization process, as shown in Fig.…”

Section: Preparation Of Copper Mediated Magnetic Molecularly Imprinte...mentioning

confidence: 99%

Efficient separation of aristolochic acid I from Caulis aristolochiae manshuriensis (Guan-mu-tong) with copper mediated magnetic molecularly imprinted polymer

Cao¹,

Shi²,

Lan³

et al. 2023

Anal. Methods

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A magnetic separable 3D hierarchical BiOI/rGO/Fe3O4 catalyst for degradation of Rhodamine B under visible light: Kinetic studies and mechanism of degradation

Cited by 16 publications

References 52 publications

Investigation of the Photocatalytic Performance, Mechanism, and Degradation Pathways of Rhodamine B with Bi2O3 Microrods under Visible-Light Irradiation

Investigation of the Photocatalytic Performance, Mechanism, and Degradation Pathways of Rhodamine B with Bi2O3 Microrods under Visible-Light Irradiation

Laser Processed Magnetite Nanoparticles Embedded on rGO Composites for Efficient Electrocatalytic Oxygen Evolution Reaction

Efficient separation of aristolochic acid I from Caulis aristolochiae manshuriensis (Guan-mu-tong) with copper mediated magnetic molecularly imprinted polymer

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