Oxidative desulfurization of dibenzothiophene and simultaneous adsorption of products on BiOBr-C3N4/MCM-41 visible-light-driven core–shell nano photocatalyst

Abedini, Fahime; Allahyari, Somaiyeh; Rahemi, Nader

doi:10.1016/j.apsusc.2021.151086

Cited by 27 publications

(4 citation statements)

References 77 publications

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“…The absorption peaks at 1626 and 3427 cm −1 were ascribed to the O–H stretching and bending vibrations of water molecules adsorbed on the surface. 47 The absorption band at 513 cm −1 reflected on the graph was indexed to the tensile vibration of the Bi–O bond. 48 Besides, the strong absorption band at 825 cm −1 and the weak absorption band at 418 cm −1 were attributed to the adsorption of the V–O bond of VO 4 3− and Ce–O bond, which meant that the crystalline CeV phase had been formed in the prepared samples.…”

Section: Resultsmentioning

confidence: 99%

Simultaneous removal of Cr(vi) and TC over BiO_1−XBr/CeVO₄ S-scheme heterostructures: oxygen vacancy boosted charge separation and analysis of intermediates

Zhang

Chen

Zhou

et al. 2022

Environ. Sci.: Nano

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Section: Resultsmentioning

confidence: 99%

Simultaneous removal of Cr(vi) and TC over BiO_1−XBr/CeVO₄ S-scheme heterostructures: oxygen vacancy boosted charge separation and analysis of intermediates

Zhang

Chen

Zhou

et al. 2022

Environ. Sci.: Nano

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“…Adsorptive desulfurization, which aims to reduce the sulfur compound content, faces challenges in terms of sulfur selectivity. On the other hand, hydrodesulfurization, another method for desulfurization, necessitates high temperatures and pressures (Abedini et al, 2021). Oxidative desulfurization is highly effective in converting 4-methyldibenzothiophene without the need for high temperatures (Ahmad et al, 2023).…”

Section: Introductionmentioning

confidence: 99%

Catalytic Oxidative Desulfurization of 4-Methyldibenzothiophene by Ni/Al Modified Titanium Dioxide and Zinc Oxide

Mohadi,

Palapa,

Wibiyan

et al. 2023

Sci. Technol. Indones

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In this study, composite layer double hydroxide-metal oxide catalysts (Ni/Al-TiO2 and Ni/Al-ZnO) were successfully prepared and utilized for the oxidative desulfurization of dibenzothiophene. The catalysts were characterized using XRD, FTIR, and SEM-EDS analysis. The diffraction patterns confirmed the successful synthesis of the composite materials, while the FTIR spectra exhibited absorption bands at specific wavenumbers 3480 cm-1, 1630 cm-1, 1376 cm-1, 830 cm-1, 775 cm-1, and 683 cm-1. The surface morphology of the catalysts showed variations, with Ni/Al-LDH having a smooth particle surface and long particle shape, while Ni/Al-ZnO and Ni/Al-TiO2 formed grain-like or aggregated structures. EDS analysis confirmed the presence of Ni/Al, Ti, and Zn elements in the composites, with Ti and Zn accounting for 29.3% and 10.7% of the composite mass, respectively. The optimized reaction conditions included a reaction time of 40 minutes, catalyst dosage of 0.25 g, temperature of 50°C, and the use of n-hexane as the solvent. The catalysts demonstrated a heterogeneous nature and proved to be reusable, as the conversion of dibenzothiophene remained above 90% even after three catalytic reactions, with Ni/Al-TiO2 and Ni/Al-ZnO composites maintaining conversion rates of 99.36% and 99.32%, respectively.

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“…Adsorptive desulfurization, which focuses on reducing sulphur compound levels, encounters difficulties in achieving high selectivity for sulphur removal. Conversely, hydrodesulfurization, another desulfurization technique, requires elevated temperatures and pressures (Abedini et al, 2021). Several transition metal-based catalysts, including Ni (Ahmad et al, 2022c), Mg (Ahmad et al, 2023b), and another catalyst like polyoxometalate (Ahmad et al, 2022a), red mud (Liu et al, 2023) and solvents as catalysts such as ionic liquid (Parhi and Misra, 2023) and alkanol amine (Chandran et al, 2019) can be utilized for catalytic oxidative desulfurization.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Zn/Al-ZnO Composite Using Zn/Al-Layered Double Hydroxide for Oxidative Desulfurization of 4-Methyldibenzothiophene

Mohadi,

Ahmad,

Wibiyan

et al. 2023

Sci. Technol. Indones

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Zn/Al-ZnO composites made from Zn/Al-Layered Double Hydroxide base material and ZnO as a precursor were successfully made in this study. Characterization analysis using SEM-EDS, XRD, and FTIR. The SEM analysis results show the Zn/Al-LDH has a smooth surface, overlapping, and is prone to aggregation, resulting in non-uniform particle size. However, it forms a uniform grain shape. Zn/Al-ZnO have rough surfaces with uniform particle shape and size, and the presence of pores on the particle surface. EDS analysis shows the Zn element which is more abundant in Zn/Al-ZnO. XRD analysis of Zn/Al-LDH showed the hydrotalcite. XRD analysis on ZnO showed the hexagonal wurtzite crystal structure. Zn/Al-ZnO composites at an angle of 2θ show the same peak of the base material and the precursor. FTIR analysis of the composite revealed the presence of O-H groups at wave numbers 3445 cm−1, 1633 cm−1, and 1504 cm−1, indicating the presence of nitrate. Additionally, vibrations at wave numbers 1382 cm−1 corresponded to antisymmetric (v3) stretching of nitrate, while wave numbers 418 cm−1 and 606 cm−1 indicated metal-oxygen stretching vibrations. Of all the factors used in the desulfurization of 4-methyldibenzothiophene, Zn/Al-ZnO composites had the highest %conversion rate of both the base material and the precursor. The %conversion values of Zn/Al-ZnO at the time of contact were 99.40%, catalyst dosage 99.38%, solvent 99.10%, and temperature 99.56%, respectively. The catalyst is heterogeneous and reusable for the desulfurization of 4-methyldibenzothiophene.

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Oxidative desulfurization of dibenzothiophene and simultaneous adsorption of products on BiOBr-C3N4/MCM-41 visible-light-driven core–shell nano photocatalyst

Cited by 27 publications

References 77 publications

Simultaneous removal of Cr(vi) and TC over BiO_1−XBr/CeVO₄ S-scheme heterostructures: oxygen vacancy boosted charge separation and analysis of intermediates

Simultaneous removal of Cr(vi) and TC over BiO_1−XBr/CeVO₄ S-scheme heterostructures: oxygen vacancy boosted charge separation and analysis of intermediates

Catalytic Oxidative Desulfurization of 4-Methyldibenzothiophene by Ni/Al Modified Titanium Dioxide and Zinc Oxide

Synthesis of Zn/Al-ZnO Composite Using Zn/Al-Layered Double Hydroxide for Oxidative Desulfurization of 4-Methyldibenzothiophene

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Oxidative desulfurization of dibenzothiophene and simultaneous adsorption of products on BiOBr-C3N4/MCM-41 visible-light-driven core–shell nano photocatalyst

Cited by 27 publications

References 77 publications

Simultaneous removal of Cr(vi) and TC over BiO1−XBr/CeVO4 S-scheme heterostructures: oxygen vacancy boosted charge separation and analysis of intermediates

Simultaneous removal of Cr(vi) and TC over BiO1−XBr/CeVO4 S-scheme heterostructures: oxygen vacancy boosted charge separation and analysis of intermediates

Catalytic Oxidative Desulfurization of 4-Methyldibenzothiophene by Ni/Al Modified Titanium Dioxide and Zinc Oxide

Synthesis of Zn/Al-ZnO Composite Using Zn/Al-Layered Double Hydroxide for Oxidative Desulfurization of 4-Methyldibenzothiophene

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Simultaneous removal of Cr(vi) and TC over BiO_1−XBr/CeVO₄ S-scheme heterostructures: oxygen vacancy boosted charge separation and analysis of intermediates

Simultaneous removal of Cr(vi) and TC over BiO_1−XBr/CeVO₄ S-scheme heterostructures: oxygen vacancy boosted charge separation and analysis of intermediates