Bimetallic nanocomposite (Ag-Au, Ag-Pd, Au-Pd) synthesis using gum kondagogu a natural biopolymer and their catalytic potentials in the degradation of 4-nitrophenol

“…The design and synthesis of noble metal nanostructures, including Ag-Au BMNPs, have gained significant interest due to their unique properties and potential applications in various fields. fenugreek, soybean, and coriander leaf extracts 10-12 nm, spherical antileishmanial [82] Lawsonia inermis seed aqueous extracts 15-35 nm, polygonal, spherical and irregular photocatalytic [83] potato starch 9.7 nm, icosahedral antimicrobial and anticancer [84] kondagogu rubber 23 nm, spherical catalytic [85] Lithospermum erythrorhizon 3-451 nm, spherical and elliptical cytotoxic [86] chitosan 29 nm, spherical cell imaging [87] cyclodextrin 15 nm, spherical radical scavenging [88] M. officinalis 8 nm, flower-like antimicrobial [89] The use of Artemisia pallens for AgNPs was first reported by Arde et al 90 In this work, we synthesized AgNPs, AuNPs, and Ag-Au bimetallic NPs using Artemisia pallens, although other Artemisia species have been utilized in the past. Developing environmentally friendly processes for synthesizing nanoscale materials is crucial, and Ag-Au BMNPs have potential applications in various fields due to their unique properties.…”

Section: -25 Nm Spherical Antimicrobialmentioning

confidence: 99%

Green Synthesis of Silver and Gold Nanoparticles by Aqueous Artemisia Pallens Extract

Verma

2024

Preprint

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We successfully harnessed the potential of Artemisia pallens extracts for the eco-friendly biosynthesis of silver, gold, and silver-gold bimetallic nanoparticles, employing aqueous silver nitrate and chloroauric acid solutions. This innovative approach departs from traditional methods, often involving toxic chemical agents like hydrazine hydrate and sodium borohydride. In the quest for greener protocols, the biological route emerges as a non-toxic, straightforward, and environmentally sound alternative, opening new avenues for translational research. This article discusses the production of silver, gold, and silver-gold nanoparticles using different species of Artemisia plants. Nanoparticle characterization was carried out using UV-visible spectrophotometry, TEM, XRD, and FTIR techniques. Microwave-assisted synthesis resulted in well-dispersed nanoparticles. In the case of silver nanoparticles, a spherical shape with a size of 6 nm was achieved using the microwave radiation-assisted method, while a size of 20 nm was obtained with UV-assisted synthesis. Gold nanoparticles exhibited diverse shapes, including spherical, triangular, prisms, trapezoids, and hexagonal, with a predominant size of 10 nm. The size range for gold nanoparticles varied from 10 nm to 400 nm.

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“…In humans, free radicals are produced during normal metabolic processes. Their smaller amount is essential for cellular processes, but their higher amount causes oxidative stress, which makes humans prone to many medical conditions, and one among them is gene mutation [55,56]. So, there is an urgent need to develop benign, cost-effective antioxidants to solve this problem.…”

Section: Antioxidant Activitiesmentioning

confidence: 99%

Syzygium aromaticum Bud Extracted Core–Shell Ag–Fe Bimetallic Nanoparticles: Phytotoxic, Antioxidant, Insecticidal, and Antibacterial Properties

Murtaza,

Akhter,

Qamar

et al. 2024

Crystals

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Today, there is the roar of sustainable material development around the globe. Green nanotechnology is one of the extensions of sustainability. Due to its sustainable approach, the green fabrication of nanoparticles has recently surpassed their classical synthesis in popularity. Among metal nanoparticles, contemporary findings have demonstrated that bimetallic nanoparticles possess more potential for different applications than monometallic nanoparticles due to the synergistic effects of the two metals. So, we are presenting facile, one-vessel, and one-step phyto-fabrication of Ag–Fe BMNPs using the bud extract of Syzygiumaromaticum. The synthesized nanoparticles were characterized by UV-VIS, XRD, EDX, FTIR, and SEM. The synthesized NPs and the extract underwent biological studies. The radical scavenging potential of the NPs and the extract was found to be 64% and 73%, and the insecticidal potential was found to be 80% and 100%, respectively. Similarly, the NPs and the extract both exhibited good antibacterial activity. The zone of inhibition using 100 mg/mL of extract and NPs was found to be 1 cm against all bacterial species, i.e., K. pneumonia, E. coli, and S. aureus. It was 1.5 cm, 1.3 cm, and 1 cm against K. pneumonia, E. coli, and S. aureus, respectively, showing that the antibacterial activity of the extract is higher than that of the NPs. So, this study unlocks the synthesis of Ag–Fe bimetallic nanoparticles using eco-safe, cost-effective, facile, and least-harmful green methodology with potential applications of both NPs and SA extract in medical and agricultural fields, a step towards sustainability.

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Bimetallic nanocomposite (Ag-Au, Ag-Pd, Au-Pd) synthesis using gum kondagogu a natural biopolymer and their catalytic potentials in the degradation of 4-nitrophenol

Cited by 34 publications

References 67 publications

Green synthesis of biocompatible core–shell (Au–Ag) and hybrid (Au–ZnO and Ag–ZnO) bimetallic nanoparticles and evaluation of their potential antibacterial, antidiabetic, antiglycation and anticancer activities

Green synthesis of biocompatible core–shell (Au–Ag) and hybrid (Au–ZnO and Ag–ZnO) bimetallic nanoparticles and evaluation of their potential antibacterial, antidiabetic, antiglycation and anticancer activities

Green Synthesis of Silver and Gold Nanoparticles by Aqueous Artemisia Pallens Extract

Syzygium aromaticum Bud Extracted Core–Shell Ag–Fe Bimetallic Nanoparticles: Phytotoxic, Antioxidant, Insecticidal, and Antibacterial Properties

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