A novel layered double hydroxide-based ternary nanocomposite for the effective photocatalytic degradation of rhodamine B

Abdelbar, Nader M.; Ahmed, Mohamed A.; Mohamed, Ashraf A.

doi:10.1039/d4ra00685b

RSC Adv.

2024

DOI: 10.1039/d4ra00685b

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A novel layered double hydroxide-based ternary nanocomposite for the effective photocatalytic degradation of rhodamine B

Nader M. Abdelbar,

Mohamed A. Ahmed,

Ashraf A. Mohamed

Abstract: Photocatalytic degradation of organic pollutants is a green and effective route of wastewater treatment.

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Cited by 4 publications

References 45 publications

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Ternary MgAlFe‐Layered Double Hydroxide: Synthesis, Characterization, and Application in Photocatalytic Degradation

Cui,

Zhang,

Xie

et al. 2024

ChemistrySelect

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In this study, MgAlFe‐layered double hydroxide (LDH) was prepared using the co‐precipitation method, and its performance as a photocatalyst for methylene blue (MB) degradation was evaluated. XRD and FTIR analyses confirmed the crystalline structure and successful incorporation of Al into the LDH layers. SEM and TEM images revealed a uniform morphology and layered structure and UV–vis DRS analysis showed that MgAlFe‐LDH has an appropriate band gap for visible light absorption. Photoluminescence studies indicated good charge separation, reducing electron‐hole recombination and enhancing photocatalytic performance. The effects of the Mg/Al/Fe molar ratio, illumination time, catalyst dosage, MB concentration, and pH on the degradation efficiency were examined. Optimized conditions of Mg/Al/Fe molar ratio 3:0.9:0.1, 180 min illumination, 10 mg L⁻¹ catalyst, 20 mg L⁻¹ MB, and pH 13 yielded a remarkable 90.4% MB degradation efficiency. The primary active species in the photocatalytic reaction were identified as hydroxyl radicals (·OH) and holes (h⁺). The incorporation of ternary LDH enhances the photocatalytic performance due to its high stability, versatility, and ability to integrate multiple metal cations. This study broadens the application of LDH in treating organic dye wastewater and provides new insights into the photocatalytic degradation of MB.

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Ternary MgAlFe‐Layered Double Hydroxide: Synthesis, Characterization, and Application in Photocatalytic Degradation

Cui,

Zhang,

Xie

et al. 2024

ChemistrySelect

View full text Add to dashboard Cite

show abstract

Solvothermal synthesis of a flower-like double Z-scheme PANI/Bi2Sn2O7/BiOBr/Ti photoanode and its performance in photocatalytic fuel cell

Zeng,

Xu,

Zhong

et al. 2025

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Eco-friendly fabrication of copper oxide nanoparticles using peel extract of Citrus aurantium for the efficient degradation of methylene blue dye

Khedr,

Ali

2024

Sci Rep

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This study presents a simple, sustainable, eco-friendly approach for synthesizing copper oxide (CuO) nanoparticles using Citrus aurantium peel extract as a natural reducing and stabilizing agent. The synthesized CuO and CuO-OP were characterized using various techniques, including surface area measurement (SBET), X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), diffuse reflectance spectroscopy (DRS), scanning electron microscopy (SEM) coupled with energy dispersive X-ray spectroscopy (EDX), and high resolution transmission electron microscope (HRTEM). DRS analysis determines band gap energy (Eg) of 1.7 eV for CuO and 1.6 eV for CuO-OP. FTIR confirmed the presence of Cu–O bond groups. The XRD and HRTEM results revealed monoclinic and spherical nanostructures, with average particle sizes ranging from 53.25 to 68.02 nm, as determined via Scherer’s equation. EDX analysis indicated incorporation of carbon (1.6%) and nitrogen (0.3%) from the peel extract. The synthesized CuO and CuO-OP NPs exhibited excellent photocatalytic efficiencies for methylene blue dye under UV irradiation, reaching 95.34 and 97.5%, respectively, under optimal conditions; the initial dye concentration was 100 mg/L, the pH was 10, the catalyst dosage was 1 g/L, and the contact time was 120 min. Isothermal studies showed that the adsorption of MB onto the nanoparticles followed the Freundlich isotherm model (R2 = 0.97 and 0.96). Kinetic studies indicated that the degradation followed pseudo-first-order kinetics, with rate constants (K1) of 0.0255 min−1 for CuO and 0.033 min−1 for CuO-OP. The sorption capacities were calculated as 98.19 mg/g for CuO and 123.1 mg/g for CuO-OP. The energy values obtained from the Dubinin–Radushkevich isotherm were 707.11 and 912.87 KJ mol−1, suggesting that chemisorption was the dominant mechanism.

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A novel layered double hydroxide-based ternary nanocomposite for the effective photocatalytic degradation of rhodamine B

Abstract: Photocatalytic degradation of organic pollutants is a green and effective route of wastewater treatment.

Cited by 4 publications

References 45 publications

Ternary MgAlFe‐Layered Double Hydroxide: Synthesis, Characterization, and Application in Photocatalytic Degradation

Ternary MgAlFe‐Layered Double Hydroxide: Synthesis, Characterization, and Application in Photocatalytic Degradation

Solvothermal synthesis of a flower-like double Z-scheme PANI/Bi2Sn2O7/BiOBr/Ti photoanode and its performance in photocatalytic fuel cell

Eco-friendly fabrication of copper oxide nanoparticles using peel extract of Citrus aurantium for the efficient degradation of methylene blue dye

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