Silver nanoparticle embedded copper oxide as an efficient core–shell for the catalytic reduction of 4-nitrophenol and antibacterial activity improvement

Bouazizi, Nabil; Vieillard, Julien; Thébault, Pascal; Desriac, Florie; Clamens, Thomas; Bargougui, R.; Couvrat, Nicolas; Thoumire, Olivier; Brun, Nicolas; Ladam, Guy; Morin, Sandrine; Mofaddel, Nadine; Lesouhaitier, Olivier; Azzouz, Abdelkrim; Derf, Franck Le

doi:10.1039/c8dt02154f

Cited by 58 publications

(24 citation statements)

References 59 publications

(49 reference statements)

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“…The seriousness of biodiversity increases further, as the number of a nitro group increases in the aromatic rings. This discussion has been substantiated by the previous report mentioned that risk could be reduced by the suitable conversion of nitrophenol into aminophenol derivative which is comparatively less harmful [6]. It is worth mentioning here, that the reduction of the nitro moiety might be the best way to discard nitrophenol derivatives from the environment.…”

Section: Introductionsupporting

confidence: 52%

Polyoxometalate functionalized matrix material: synthesis, characterization, reductive and thermal degradation kinetics

Sabarinathan¹,

Vijayakumar

Arumuganathan³

2020

SN Appl. Sci.

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One-pot synthesis of polyoxometalate (POM) based hybrid material 1 was synthesized by mixing copper nitrate, silicomolybdic acid and urea under hydrothermal condition. The reduction ability of 1 was examined by employing 2,4,6-trinitrophenol (2,4,6-TNP) and 4-nitrophenol (4-NP) in the presence of sodium borohydride in water. The catalytic reduction into the corresponding amine was monitored by UV-Visible spectroscopy. The rate and order of catalytic reduction were studied through chemical kinetics and follows pseudo-first-order. The efficiency of the catalyst was investigated by employing used catalyst 1 for at least ten cycles. Leaching experiments and performance of the reusability of catalyst were supported by FT-IR analyses. In addition, the electrochemical reduction ability of catalyst 1 was also executed by Cyclic Voltammetry (CV). Catalyst 1 was characterized by Fourier-Transform Infrared spectroscopy (FT-IR), Powder X-ray diffraction (PXRD), UV-Diffused Reflectance (UV DRS), Scanning Electron Microscope (SEM), Energy Dispersive X-ray Spectroscopy (EDX), X-ray Photoelectron Spectroscopy (XPS), and Bruner-Emmet-Teller analyses (BET). Solid-state decomposition kinetics of 1 was performed from Thermogravimetric Analysis (TGA) data by fitting into model equations such as Flynn-Wall-Ozawa (FWO) and corrected (C-FWO).of steps in synthesis, reporting with a lower yield, specific and selectivity, etc. [17]. Copious reports were available with gracious metals such as Pd and Pt catalysts, however, the expensive nature of such metals restrict the common usage [18,19]. Hence, the development of a novel simple methodology for the reductive conversion with selectivity is currently required research area [20]. In this present work, we adopt the simple one-pot synthesis route of title compound by hydrothermal technique.The Polyoxometalates (POM) are metal-oxo clusters of molybdenum, tungsten, and vanadium, etc. attracting considerable interest because of their versatility [21]. The POMs are well known for their usage in multiple fields such as medicine, electronics, magnetism, optics [22], conductance, supramolecular chemistry [23], adsorption [24], antitumor [25], anti-cancer [26], anti-bacterial [27] and catalysis etc. [28]. Usage of POM cluster as a catalyst along with transition metal support in the form of matrix composite could have an added advantage over to either as bare transition metals/plain POM treatment like controlled oxidation, deactivation in air, stopping magnetically induced aggregation, etc. [29][30][31]. It is worth mentioning that in the presence of NaBH 4 the POM has been reported as an efficient reductive catalyst as the reduction concern [32]. In this present work, we report a novel inorganic-organic hybrid composite POM-hybrid (1) material isolated in situ and applied as a reductive catalyst for aromatic nitrophenol derivatives in an aqueous medium.

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Section: Introductionsupporting

confidence: 52%

Polyoxometalate functionalized matrix material: synthesis, characterization, reductive and thermal degradation kinetics

Sabarinathan¹,

Vijayakumar

Arumuganathan³

2020

SN Appl. Sci.

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“…Reduction of 4‐NP has been widely accepted for evaluating the catalytic performance of metal NP‐based catalysts . Herein, it was also selected as a model reaction for assessment of the PPy@Pd‐Fe 3 O 4 nanotubes.…”

Section: Resultsmentioning

confidence: 99%

A simple approach for synthesis of hollow mesoporous nanotubes loaded with metallic and magnetic nanoparticles: Only one step is required

Jia

Tong

et al. 2019

Applied Organom Chemis

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Hollow mesoporous polypyrrole (PPy)@Pd‐Fe3O4 nanotubes were prepared using MoO3 nanorods as hard templates in one step, in which construction of PPy nanotubes, preparation of Pd nanoparticles, synthesis of Fe3O4 nanoparticles and removal of MoO3 nanorods were combined together. To the best of our knowledge, this is the simplest approach for the synthesis of nanomaterials with catalytic activity, magnetic property and hollow mesoporous structure simultaneously. Although the preparation procedure was simplified, the catalytic activity and magnetic property were not sacrificed. In the catalytic reduction of 4‐nitrophenol, both reaction rate constant and turnover frequency were higher than those of previous reports. Importantly, the nanotubes could be easily separated from the reaction solution in the presence of a magnetic field, and saturation magnetization could be controlled by the amount of pyrrole monomer. After six recycles, the catalytic activity maintained 94.8% of that of the first run, indicating good stability and reusability.

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“…38,64,65 On the other hand, strong interactions between thiol groups and Fe explain the lower particles size on PET-SH, in agreement with previous data. 66 This was accompanied by the high density of Fe for PET-SH-Fe as compared to APTES and PAMAM graed nonwoven, due to the high affinity of S atoms towards Fe nanoparticles. The evidence of the uniform and high density of iron nanoparticles is provided by SEM analysis (see Section 3.1.3 and Fig.…”

Section: Part 2: Analysis Of Heterogeneous Fenton-like Removal Of Crymentioning

confidence: 99%

Modification of fibrous membrane for organic and pathogenic contaminants removal: from design to application

et al. 2020

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Silver nanoparticle embedded copper oxide as an efficient core–shell for the catalytic reduction of 4-nitrophenol and antibacterial activity improvement

Cited by 58 publications

References 59 publications

Polyoxometalate functionalized matrix material: synthesis, characterization, reductive and thermal degradation kinetics

Polyoxometalate functionalized matrix material: synthesis, characterization, reductive and thermal degradation kinetics

A simple approach for synthesis of hollow mesoporous nanotubes loaded with metallic and magnetic nanoparticles: Only one step is required

Modification of fibrous membrane for organic and pathogenic contaminants removal: from design to application

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