Antibacterial Activity and Catalytic Reduction of 4-Nitrophenol and Methylene Blue on MCM-41 Modified by CuNPs

Belkaid, N.; Boukoussa, Bouhadjar; Mokhtar, Adel; Hachemaoui, Mohammed; Beldjilali, Mohammed; Mekki, Amel; Hacini, Salih; Bengueddach, Abdelkader; Hamacha, Rachida

doi:10.1007/s12633-021-01642-y

Cited by 15 publications

(3 citation statements)

References 46 publications

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“…The development of efficient, sustainable, and selective nanocatalysts for nitro- and heterocyclic reductions spans importance across agricultural, environmental, pharmaceutical, and industrial applications. − Many noble metal-based nanocatalysts demonstrate high activity for these reactions yet their scarcity and associated cost prevents broader-scale application . More recently, earth-abundant transition metal oxide-based catalysts have shown competitive reactivity. , Although numerous variations of earth-abundant transition metal catalysts have been tested, the nature of their active sites often remains enigmatic, leading to a more Edisonian approach to catalyst design.…”

Section: Introductionmentioning

confidence: 99%

Multivariate Analysis on the Structure–Activity Parameters for Nano-CuO_x-Catalyzed Reduction Reactions

Shultz-Johnson,

Chang,

Bisram

et al. 2024

ACS Appl. Nano Mater.

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Understanding the origin of enhanced catalytic activity is critical to heterogeneous catalyst design. This is especially important for non-noble metalbased catalysts, notably metal oxides, which have recently emerged as viable candidates for numerous thermal catalytic processes. For thermal catalytic reduction/hydrogenation using metal oxide nanoparticles, enhanced catalytic performance is typically attributed to an increased surface area and the presence of oxygen vacancies. Concomitantly, the treatments that induce oxygen vacancies also impact other material properties, such as the microstrain, crystallinity, oxidation state, and particle shape. Herein, multivariate statistical analysis is used to disentangle the impact of material properties of CuO nanoparticles on catalytic rates for nitroaromatic and methylene blue reduction. The impact of the microstrain, shape, and Cu(0) atomic percent is demonstrated for these reactions; furthermore, a protocol for correlating material property parameters to catalytic efficiency is presented, and the importance of catalyst design for these broadly utilized probe reactions is highlighted.

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Section: Introductionmentioning

confidence: 99%

Multivariate Analysis on the Structure–Activity Parameters for Nano-CuO_x-Catalyzed Reduction Reactions

Shultz-Johnson,

Chang,

Bisram

et al. 2024

ACS Appl. Nano Mater.

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“…Recent research has outlined the utilization of metallic nanoparticles, such as palladium 43 , 44 , copper 45 , 46 , nickel 47 , 48 , gold 49 , 50 , silver 51 – 53 , etc., and other elements, integrated into heterogeneous solid structures. These structures are specifically engineered for catalytic processes and the removal of color organic pollutants (COPs) like methylene blue, 4-nitrophenol, and methyl orange.…”

Section: Introductionmentioning

confidence: 99%

Sustainable conversion of polyethylene plastic bottles into terephthalic acid, synthesis of coated MIL-101 metal–organic framework and catalytic degradation of pollutant dyes

Zhou,

He,

Ren

et al. 2024

Sci Rep

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Persistent environmental colored compounds, resistant to biodegradation, accumulate and harm eco-systems. Developing effective methods to break down these pollutants is crucial. This study introduces Ag-MIL-101 (Ag-MIL-101) as a composite and reusable catalyst that efficiently degrades specific colored organic pollutants (COPs) like Methylene blue (MB), 4-Nitrophenol (4-NP), and 4-Nitroaniline (4-NA) using sodium borohydride at room temperature. The MIL-101 was synthesized using Terephthalic acid (TPA) derived from the degradation of Polyethylene Terephthalate (PET) plastic waste, with the assistance of zinc chloride. To further investigation, the kinetics of degradation reaction was studied under optimized conditions in the presence of Ag-MIL-101 as catalyst. Our results demonstrated the remarkable efficiency of the degradation process, with over 93% degradation achieved within just 8 min. The catalyst was characterized using FTIR, XRD, FESEM, and TEM. In this study, the average particle size of Ag-MIL-101 was determined using SEM and XRD analysis. These methods allow us to accurately and precisely determine the particle size. We determined the reaction rate constants for the degradation of each COP using a pseudo first-order kinetic equation, with values of 0.585, 0.597 and 0.302 min−1 for MB, 4-NP, and 4-NA, respectively. We also evaluated the recyclability of the catalyst and found that it could be reused for up to three cycles with only a slight decrease in efficiency (10–15%). Overall, our findings highlight the promising application of Ag-MIL-101 as an effective catalyst for the degradation of COPs, emphasizing the importance of optimizing reaction conditions to achieve enhanced efficiency.

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“…Methylene blue (MB) is a compound with broad utility in textile, paper, cosmetics, sensor, and medicinal applications. − The catalytic reduction of MB to leucomethylene blue (LMB) in the presence of a reducing agent, such as sodium borohydride (NaBH 4 ), is a ubiquitous reaction for heterogeneous catalytic testing. ,− The electron transfer from the reductant to MB is thermodynamically allowed but kinetically forbidden; catalysts are necessary to aid the electron-relay process . Specifically, inorganic heterogeneous catalysts are most often used due to their general stability toward harsh conditions, for example, in the presence of highly reducing agents such as NaBH 4 .…”

Section: Introductionmentioning

confidence: 99%

Tracking the Seconds of a Clock Reaction: A Multiparametric Experimental Study on the Catalytic Reduction of Methylene Blue

et al. 2023

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The catalytic reduction and subsequent reoxidation of methylene blue (MB) is a well-known reaction, commonly referred to as a "clock reaction". Specifically, the reduction process is accompanied by a color change from intense blue to clear and can be readily monitored by UV−vis spectroscopy via the decrease in absorbance at λ max = 664 nm, providing facile access to valuable reaction kinetics. Unsurprisingly, the reduction of methylene blue has become a widely used probe for heterogeneous catalyst reactivity. Yet, despite its broad utility, the mechanism of reduction is not well-understood. Herein, we report an experimental study on the mechanism of MB reduction using Pt/C nanoparticles. Through a multiparametric study incorporating in situ probing of reaction kinetics, pH, dissolved oxygen, and variable catalyst and reductant loading, the multiple factors impacting the reaction are disentangled. We demonstrate that the reaction steps that limit the reduction of MB are the H 2 evolution and reoxidation sequences. We limit these competitive reactions by optimizing reductant concentration and catalyst loading, N 2 purging, and restriction of O 2 redissolution. This achieves a highly competitive activity parameter of 25,740 min −1 g Pt −1 L.

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Antibacterial Activity and Catalytic Reduction of 4-Nitrophenol and Methylene Blue on MCM-41 Modified by CuNPs

Cited by 15 publications

References 46 publications

Multivariate Analysis on the Structure–Activity Parameters for Nano-CuO_x-Catalyzed Reduction Reactions

Multivariate Analysis on the Structure–Activity Parameters for Nano-CuO_x-Catalyzed Reduction Reactions

Sustainable conversion of polyethylene plastic bottles into terephthalic acid, synthesis of coated MIL-101 metal–organic framework and catalytic degradation of pollutant dyes

Tracking the Seconds of a Clock Reaction: A Multiparametric Experimental Study on the Catalytic Reduction of Methylene Blue

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Antibacterial Activity and Catalytic Reduction of 4-Nitrophenol and Methylene Blue on MCM-41 Modified by CuNPs

Cited by 15 publications

References 46 publications

Multivariate Analysis on the Structure–Activity Parameters for Nano-CuOx-Catalyzed Reduction Reactions

Multivariate Analysis on the Structure–Activity Parameters for Nano-CuOx-Catalyzed Reduction Reactions

Sustainable conversion of polyethylene plastic bottles into terephthalic acid, synthesis of coated MIL-101 metal–organic framework and catalytic degradation of pollutant dyes

Tracking the Seconds of a Clock Reaction: A Multiparametric Experimental Study on the Catalytic Reduction of Methylene Blue

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Multivariate Analysis on the Structure–Activity Parameters for Nano-CuO_x-Catalyzed Reduction Reactions

Multivariate Analysis on the Structure–Activity Parameters for Nano-CuO_x-Catalyzed Reduction Reactions