Metal oxide-biochar supported recyclable catalysts: A feasible solution for the reduction of 4-nitrophenol in water

Ramírez, Lourdes; Dennehy, Mariana; Álvarez, Mariana

doi:10.1016/j.catcom.2023.106723

Cited by 8 publications

(2 citation statements)

References 70 publications

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“…This breakthrough opens doors for utilizing renewable energy sources and eliminating persistent organic pollutants more effectively. By meticulously designing and synthesizing nanocomposite photocatalysts, researchers see immense potential for significantly increasing the efficiency and practicality of photocatalytic processes [14][15][16][17][18][19][20][21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Establishing the Link across the Synthesis Reaction Kinetics, Structural Changes, and Photocatalytic Efficiency of an Enhanced Chitosan–Clay (1:3) Nanocomposite

Albouchi,

Lahbib,

Mejri

et al. 2024

Solids

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This research investigates the influence of synthesis kinetics on the structural and photocatalytic properties of chitosan–clay nanocomposites (Cs/MMT) and chitosan–hectorite nanocomposites (Cs/HET), employing an optimized initial stoichiometry of 1:3. Utilizing a variety of analytical techniques, including X-ray diffraction (XRD), transmission electron microscopy (TEM), and Fourier-transform infrared spectroscopy (FTIR), the study explores the structural evolution of the nanocomposites and their photocatalytic performance using semiconductor catalysts TiO2 and ZnO. The findings emphasize the significant impact of reaction kinetics, particularly after 3 h of reaction time, on the structural features of the nanocomposites. Notably, Cs/MMT demonstrates greater crystalline stability compared to Cs/HET due to variations in octahedral cavity occupancy in the initial clays. FTIR and TEM analyses depict the progressive evolution of the nanocomposites during the reaction, shedding light on how reaction kinetics drive the formation of specific bonds within the nanocomposites. In terms of photocatalytic activity, this study provides insights into the complex dynamics of photocatalytic degradation, with a specific focus on the performance of TiO2 and ZnO under diverse experimental conditions. The superior efficacy of TiO2 as a catalyst, particularly when integrated with Cs/MMT nanocomposites, is unequivocally demonstrated, with degradation rates exceeding 80%. This preference stems from TiO2 consistently exhibiting higher degradation rates compared to ZnO, attributed to structural disparities between montmorillonite and hectorite, influencing catalyst–support interactions. The findings underscore the critical importance of selecting suitable catalyst and support matrix combinations for optimizing performance in specific applications.

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Section: Introductionmentioning

confidence: 99%

Establishing the Link across the Synthesis Reaction Kinetics, Structural Changes, and Photocatalytic Efficiency of an Enhanced Chitosan–Clay (1:3) Nanocomposite

Albouchi,

Lahbib,

Mejri

et al. 2024

Solids

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show abstract

“…Therefore, catalytic reduction techniques have been extensively used in various fields. [10][11][12] 4-NP can be reduced via promising catalytic reduction to the lower poisonous 4-aminophenol (4-AP) under mild conditions. The reduction of 4-NP to 4-AP has been considered as the benchmark for evaluating the nano-metal particles in catalytic performance.…”

Section: Introductionmentioning

confidence: 99%

In situ green synthesis of copper-loaded chitin/hydroxyapatite hydrogels for efficient catalytic reduction of 4-nitrophenol

Feng,

Chen,

et al. 2024

New J. Chem.

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Tungsten disulfide and reduced graphene oxide composite as efficient catalyst for the reduction of picric acid in aqueous media

Das,

Laha,

Hazarika

et al. 2024

J Mater Sci

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Metal oxide-biochar supported recyclable catalysts: A feasible solution for the reduction of 4-nitrophenol in water

Cited by 8 publications

References 70 publications

Establishing the Link across the Synthesis Reaction Kinetics, Structural Changes, and Photocatalytic Efficiency of an Enhanced Chitosan–Clay (1:3) Nanocomposite

Establishing the Link across the Synthesis Reaction Kinetics, Structural Changes, and Photocatalytic Efficiency of an Enhanced Chitosan–Clay (1:3) Nanocomposite

In situ green synthesis of copper-loaded chitin/hydroxyapatite hydrogels for efficient catalytic reduction of 4-nitrophenol

Tungsten disulfide and reduced graphene oxide composite as efficient catalyst for the reduction of picric acid in aqueous media

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