Sugar-Reduced Gelatin-Capped Silver Nanoparticles with High Selectivity for Colorimetric Sensing of Hg   and Fe   Ions in the Midst of Other Metal Ions in Aqueous Solutions.

May, Bambesiwe M.

doi:10.20964/2016.09.29

Cited by 15 publications

(2 citation statements)

References 19 publications

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“…It can be seen that the size of AgNP decreased with the addition of Au 3+ . May and Oluwafemi [30] attribute this to an oxidation reaction between AgNPs and cations, which causes the AgNPs to oxidize and smaller AgNPs to form. This was confirmed by the shift of the main peak of AgNPs from 402 to 330 nm after the addition of Au 3+ (Fig.…”

Section: Fig 11 the Simplified Schematic Of The Proposed Reaction Mec...mentioning

confidence: 99%

Fast and Simple Au<sup>3+</sup> Colorimetric Detection Using AgNPs and Investigating Its Reaction Mechanism

Rachmawati,

Rusdiarso,

Kunarti

2024

Indones. J. Chem.

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One of the precious metals that has numerous applications is gold. Although it is non-toxic and biocompatible, the oxidized form, Au3+, is toxic and can cause damage to human organs. Detection of Au3+ becomes a necessary and interesting topic to be conducted. Colorimetric analysis using metal nanoparticles such as silver nanoparticles (AgNPs) can analyze metal ions more simply, sensitively, and selectively than traditional methods. In this research, AgNPs were synthesized using polyvinyl alcohol (PVA) and ascorbic acid as stabilizers and reducing agents. The interaction between Au3+ and AgNPs selectively decreased the absorbance intensity of AgNPs and altered the color of colloidal AgNPs from yellow to colorless. These two phenomena indicated a redox reaction between Au3+ and AgNPs, leading to the decomposition of AgNPs. The decomposition of AgNPs (the proposed mechanism) was confirmed by TEM images and UV-vis spectra. The decrease in AgNPs’ absorbance intensity correlated linearly with the increase in added Au3+ concentration. The calibration curve of ∆A versus Au3+ ion concentration yielded LOD and LOQ of 0.404 and 1.347 μg/mL, respectively.

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Section: Fig 11 the Simplified Schematic Of The Proposed Reaction Mec...mentioning

confidence: 99%

Fast and Simple Au<sup>3+</sup> Colorimetric Detection Using AgNPs and Investigating Its Reaction Mechanism

Rachmawati,

Rusdiarso,

Kunarti

2024

Indones. J. Chem.

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“…The term used for addressing these methods is also referred to as "biological" synthesis. Previous studies have used bacteria [167][168][169][170], fungi [171][172][173][174], viruses [175,176], yeasts [177][178][179], plants [180][181][182][183] and plant extracts [166,[184][185][186][187][188], microalgae [189][190][191][192][193], enzymes [194][195][196], saccharides [197][198][199][200][201], and vitamins [202][203][204] to synthesize Ag nanostructures with controlled size and morphology. These methods can also be referred to as a subcategory of green synthesis.…”

Section: Review 1 Introductionmentioning

confidence: 99%

A review on the green and sustainable synthesis of silver nanoparticles and one-dimensional silver nanostructures

Kaabipour¹,

Hemmati²

2021

Beilstein J. Nanotechnol.

107

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The significance of silver nanostructures has been growing considerably, thanks to their ubiquitous presence in numerous applications, including but not limited to renewable energy, electronics, biosensors, wastewater treatment, medicine, and clinical equipment. The properties of silver nanostructures, such as size, size distribution, and morphology, are strongly dependent on synthesis process conditions such as the process type, equipment type, reagent type, precursor concentration, temperature, process duration, and pH. Physical and chemical methods have been among the most common methods to synthesize silver nanostructures; however, they possess substantial disadvantages and short-comings, especially compared to green synthesis methods. On the contrary, the number of green synthesis techniques has been increasing during the last decade and they have emerged as alternative routes towards facile and effective synthesis of silver nanostructures with different morphologies. In this review, we have initially outlined the most common and popular chemical and physical methodologies and reviewed their advantages and disadvantages. Green synthesis methodologies are then discussed in detail and their advantages over chemical and physical methods have been noted. Recent studies are then reviewed in detail and the effects of essential reaction parameters, such as temperature, pH, precursor, and reagent concentration, on silver nanostructure size and morphology are discussed. Also, green synthesis techniques used for the synthesis of one-dimensional (1D) silver nanostructures have been reviewed, and the potential of alternative green reagents for their synthesis has been discussed. Furthermore, current challenges regarding the green synthesis of 1D silver nanostructures and future direction are outlined. To sum up, we aim to show the real potential of green nanotechnology towards the synthesis of silver nanostructures with various morphologies (especially 1D ones) and the possibility of altering current techniques towards more environmentally friendly, more energy-efficient, less hazardous, simpler, and cheaper procedures.

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Simultaneous Colorimetric Sensing of Anion (I−) and Cation (Fe2+) by Protein Functionalized Silver Nanoparticles in Real Samples

et al. 2021

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Sugar-Reduced Gelatin-Capped Silver Nanoparticles with High Selectivity for Colorimetric Sensing of Hg and Fe Ions in the Midst of Other Metal Ions in Aqueous Solutions.

Cited by 15 publications

References 19 publications

Fast and Simple Au<sup>3+</sup> Colorimetric Detection Using AgNPs and Investigating Its Reaction Mechanism

Fast and Simple Au<sup>3+</sup> Colorimetric Detection Using AgNPs and Investigating Its Reaction Mechanism

A review on the green and sustainable synthesis of silver nanoparticles and one-dimensional silver nanostructures

Simultaneous Colorimetric Sensing of Anion (I−) and Cation (Fe2+) by Protein Functionalized Silver Nanoparticles in Real Samples

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