Green synthesis and characterization of silver nanoparticles using Prunus persica L. (peach pomace) with natural deep eutectic solvent and plasma-liquid process

Скіба, Маргарита; Vorobyova, Viktoria

doi:10.1007/s11696-022-02274-1

Cited by 9 publications

(5 citation statements)

References 50 publications

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“…By employing NaOCl as an oxidizing agent for MB dye oxidative degradation, we investigated the catalytic oxidative degradation reaction of the NiO/kaolin nanocomposite. A solution containing MB exhibits a UV–vis spectrum with peaks at 290 and 664 nm, accompanied by a dip at 612 nm, associated with π → π* and n → π* transitions, consequently …”

Section: Resultsmentioning

confidence: 99%

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Synthesis of Kaolin-Supported Nickel Oxide Composites for the Catalytic Oxidative Degradation of Methylene Blue Dye

Mohammed,

Atlabachew,

Aragaw

et al. 2024

ACS Omega

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Organic dye contamination of water is a contributing factor to environmental pollution and has a negative impact on aquatic ecology. In this study, unsupported NiO and kaolin-supported NiO composites were synthesized by a one-step wet impregnation–precipitation method through the precipitation of nickel hydroxide onto locally accessible, inexpensive, and easily treated kaolin surfaces by using sodium hydroxide as a precipitating agent. The product was calcined at 500 °C and used for the catalytic oxidative degradation of methylene blue (MB) dye in an aqueous solution. The morphology, structure, and interactions of the synthesized materials were explored by SEM, XRD, and FT-IR spectroscopy. The characterization results revealed the fabrication and the growth of NiO on the kaolin surface. To determine the catalytic oxidative degradation performance of the catalyst, many experiments have been performed using the MB dye as a model dye. The catalytic degradation tests confirmed the importance of NiO and the high catalytic activity of the synthesized NiO/kaolin composite toward MB dye degradation. The oxidative degradation results showed that the optimized precursor amount on the kaolin surface could efficiently enhance the removal of MB dye. The kinetic investigation of the catalytic degradation of MB dye fitted the pseudo-first-order kinetic model. High removal efficiency was observed after eight reuse cycles, proving the exceptional stability and reusability of the composite. The catalytic process also proceeded with a low activation energy of 30.5 kJ/mol. In conclusion, the kaolin-supported NiO composite was established to be a favorable catalyst to degrade a model dye (MB) from an aqueous solution in the presence of inexpensive and easily available NaOCl with a catalytic efficiency of the material higher than 99% of the 20.3 mg catalyst within 6 min with an apparent rate constant, k app, higher than 0.44625 min–1, which is far better than that of the unsupported catalyst with a k app of 0.0926 min–1 at 10 mg dose in 20 min.

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Section: Resultsmentioning

confidence: 99%

“…A solution containing MB exhibits a UV−vis spectrum with peaks at 290 and 664 nm, accompanied by a dip at 612 nm, associated with π → π* and n → π* transitions, consequently. 36 3.2.2. Catalytic Activity of the NiO/Kaolin Nanocomposite.…”

Section: Scanning Electron Microscopicmentioning

confidence: 99%

Synthesis of Kaolin-Supported Nickel Oxide Composites for the Catalytic Oxidative Degradation of Methylene Blue Dye

Mohammed,

Atlabachew,

Aragaw

et al. 2024

ACS Omega

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“…The aqueous solution of the oxidized form of MB is deep blue in color, and its reduced form (leuco form) is colorless. The UV–vis absorption spectrum of an aqueous solution of MB shows peaks at 290 and 664 nm with a hump at 612 nm due to π → π* and n → π* transitions, respectively . The reduction of MB into its colorless form can be followed spectrophotometrically by monitoring the absorption maximum at 664 nm.…”

Section: Resultsmentioning

confidence: 99%

Kaolin-Supported Silver Nanoparticles as an Effective Catalyst for the Removal of Methylene Blue Dye from Aqueous Solutions

et al. 2022

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Water contamination by organic dyes has become a reason for severe environmental pollution and has been threatening the aquatic ecosystem. In this study, kaolin-supported silver nanoparticle (Ag-NP) composites were synthesized by a facile two-step adsorption−reduction method through the reduction of silver ions adsorbed onto locally available, inexpensive, and easily pretreated kaolin surfaces by using sodium borohydride (NaBH 4 ) for the catalytic degradation of methylene blue (MB) dye in aqueous solution. The morphology, structure, surface area, and interaction of the synthesized materials were investigated by scanning electron microscopy, X-ray diffraction, Brunauer− Emmett−Teller, and Fourier transform infrared spectroscopy, respectively. Characterization results showed the successful growth of Ag-NPs on the kaolin surface. To understand the catalytic degradation performance of the catalyst, batch experiments were carried out using MB dye as a model dye. The catalytic reduction tests confirmed the importance of Ag-NPs and the high catalytic activities of the synthesized Ag-NPs/kaolin composite toward MB dye reduction. The degradation results indicated that the increased Ag-NP content on the kaolin surface through repeating cycles could effectively enhance the removal of MB dye from an aqueous solution. The kinetic analysis of the MB dye degradation of the catalyst has fitted the pseudo-first-order kinetic model. More than 97% removal efficiency was still present after five reuse cycles, demonstrating exceptional stability and reusability of the composite. In conclusion, the Ag-NPs supported kaolin (Ag-NPs/kaolin) composite was found to be a promising catalyst for the excellent catalytic activity to reduce a model dye MB from the aqueous solution in the presence of NaBH 4 with catalytic efficiency higher than 97% and a reduction rate constant, k red , higher than 0.86 min −1 .

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“…Certain researchers have also observed that the synthesized NPs exhibit dynamic behavior, showing different symptoms and implications over time and in different environments [129]. Other significant parameters that influence nanoparticle synthesis include solution pH, temperature, the concentration of extracts and raw materials utilized, size, and the procedures used during the synthesis process [130]. Below are some significant factors that have a dominant impact on the production of silver NPs.…”

Section: Factors Influencing the Production Of Silver Npsmentioning

confidence: 99%

Green Synthesis, Characterization and Application of Silver Nanoparticles Using Bioflocculant: A Review

Nkosi,

Basson,

Ntombela

et al. 2024

Bioengineering

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Nanotechnology has emerged as an effective means of removing contaminants from water. Traditional techniques for producing nanoparticles, such as physical methods (condensation and evaporation) and chemical methods (oxidation and reduction), have demonstrated high efficiency. However, these methods come with certain drawbacks, including the significant energy requirement and the use of costly and hazardous chemicals that may cause nanoparticles to adhere to surfaces. To address these limitations, researchers are actively developing alternative procedures that are cost-effective, environmentally safe, and user-friendly. One promising approach involves biological synthesis, which utilizes plants or microorganisms as reducing and capping agents. This review discusses various methods of nanoparticle synthesis, with a focus on biological synthesis using naturally occurring bioflocculants from microorganisms. Bioflocculants offer several advantages, including harmlessness, biodegradability, and minimal secondary pollution. Furthermore, the review covers the characterization of synthesized nanoparticles, their antimicrobial activity, and cytotoxicity. Additionally, it explores the utilization of these NPs in water purification and dye removal processes.

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Green synthesis and characterization of silver nanoparticles using Prunus persica L. (peach pomace) with natural deep eutectic solvent and plasma-liquid process

Cited by 9 publications

References 50 publications

Synthesis of Kaolin-Supported Nickel Oxide Composites for the Catalytic Oxidative Degradation of Methylene Blue Dye

Synthesis of Kaolin-Supported Nickel Oxide Composites for the Catalytic Oxidative Degradation of Methylene Blue Dye

Kaolin-Supported Silver Nanoparticles as an Effective Catalyst for the Removal of Methylene Blue Dye from Aqueous Solutions

Green Synthesis, Characterization and Application of Silver Nanoparticles Using Bioflocculant: A Review

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