Synthesis of starch-stabilized silver nanoparticles and their application as a surface plasmon resonance-based sensor of hydrogen peroxide

Vasileva, Penka; Donkova, B.; Karadjova, Irina; Dushkin, Ceco D.

doi:10.1016/j.colsurfa.2010.11.060

Cited by 217 publications

(104 citation statements)

References 62 publications

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“…The synthesis of AgNPs follows a green synthetic procedure as described in our previous study [34]. The silver nanoparticles were obtained through a reduction reaction of silver nitrate with D-glucose as a reducing agent in the presence of starch as a stabilizer and suitable sodium hydroxide amount as a reaction catalyst.…”

Section: Synthesis and Characterization Of Silver Nanoparticlesmentioning

confidence: 99%

Application of Starch-Stabilized Silver Nanoparticles as a Colorimetric Sensor for Mercury(II) in 0.005 mol/L Nitric Acid

Vasileva

Alexandrova

Karadjova

2017

Journal of Chemistry

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, and Ni 2+ ) do not interfere under the same conditions, due to the absence of oxidative activity of these ions, which guarantees the high selectivity of the proposed optical sensor towards Hg 2+ . The limits of detection and quantification were found to be 0.9 g L −1 and 2.7 g L −1 , respectively, and relative standard deviations varied in the range 9-12% for Hg content from 0.9 to 12.5 g L −1 and 5-9% for Hg levels from 25 to 500 g L −1 . The method was validated by analysis of CRM Estuarine Water BCR505. A possible mechanism of interaction between AgNPs and Hg 2+ for both concentration ranges was proposed on the basis of UV-Vis, TEM, and SAED analyses.

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Section: Synthesis and Characterization Of Silver Nanoparticlesmentioning

confidence: 99%

Application of Starch-Stabilized Silver Nanoparticles as a Colorimetric Sensor for Mercury(II) in 0.005 mol/L Nitric Acid

Vasileva

Alexandrova

Karadjova

2017

Journal of Chemistry

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“…These properties make it possible to apply Ag-NPs in a wide range of areas, such as in optical sensors [3][4] or as substrate for surface-enhanced Raman spectroscopy (SERS) [5][6]. Since at the nano scale the reactivity is enhanced significantly, this property allows Ag-NPs to be an effective catalyst for many chemical reactions [7][8].…”

Section: B Introductionmentioning

confidence: 99%

The Synthesis of Alginate-Capped Silver Nanoparticles under Microwave Irradiation

2015

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Abstract. Synthesis of silver nanoparticles (Ag-NP) was successfully performed within a few minutes by microwave irradiation of the precursor salt (AgNO 3 ) and alginate mixed solution in one pot. Herein, alginate molecules acted as both a reducing and stabilizing agent for the preparation of the silver nanoparticles. The obtained nanoparticles were characterized by ultraviolet-visible (UV-Vis) spectroscopy, particle size analysis (PSA), Fourier transform infrared spectroscopy (FTIR), and transmission electron microscopy (TEM). The pH and concentration ratio of the alginate/metal precursor salt greatly influenced the particle size and its distribution of Ag-NP. The higher the pH the higher the nucleation rate and the larger the electrostatic stabilization, while both of them were responsible for producing a smaller particle size and a narrower size distribution. A higher concentration ratio also yielded a smaller particle size and a narrower size distribution, but above the optimum ratio, the trend was conversely changed due to the reducing capability of the alginate, which was dominant above the optimum ratio, thus creating a high density of nuclei, allowing aggregation to occur. A lower ratio not only led to a higher tendency to produce larger particles, but also a higher probability of anisotropic particle shape formation due to the lack of reducing capability of the alginates.

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“…Apart from different metals and oxides, smart dust nanoparticles can also be capped with biological species to facilitate the detection of diverse reagents. Vasileva et al have demonstrated the use of starch-stabilized silver nanoparticles to detect hydrogen peroxide (H 2 O 2 ) [51]. Hydrogen peroxide plays an important role in the human body, where it is a key factor for oxygen metabolism, enzymatic breakdown of glucose or lactose, and oxidative stress [53].…”

Section: Engineered Nanoparticles and Smart Dustmentioning

confidence: 99%

Plasmonic gas and chemical sensing

2014

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Sensitive and robust detection of gases and chemical reactions constitutes a cornerstone of scientific research and key industrial applications. In an effort to reach progressively smaller reagent concentrations and sensing volumes, optical sensor technology has experienced a paradigm shift from extended thin-film systems towards engineered nanoscale devices. In this size regime, plasmonic particles and nanostructures provide an ideal toolkit for the realization of novel sensing concepts. This is due to their unique ability to simultaneously focus light into subwavelength hotspots of the electromagnetic field and to transmit minute changes of the local environment back into the farfield as a modulation of their optical response. Since the basic building blocks of a plasmonic system are commonly noble metal nanoparticles or nanostructures, plasmonics can easily be integrated with a plethora of chemically or catalytically active materials and compounds to investigate processes ranging from hydrogen absorption in palladium to the detection of trinitrotoluene (TNT). In this review, we will discuss a multitude of plasmonic sensing strategies, spanning the technological scale from simple plasmonic particles embedded in extended thin films to highly engineered complex plasmonic nanostructures. Due to their flexibility and excellent sensing performance, plasmonic structures may open an exciting pathway towards the detection of chemical and catalytic events down to the single molecule level.

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Synthesis of starch-stabilized silver nanoparticles and their application as a surface plasmon resonance-based sensor of hydrogen peroxide

Cited by 217 publications

References 62 publications

Application of Starch-Stabilized Silver Nanoparticles as a Colorimetric Sensor for Mercury(II) in 0.005 mol/L Nitric Acid

Application of Starch-Stabilized Silver Nanoparticles as a Colorimetric Sensor for Mercury(II) in 0.005 mol/L Nitric Acid

The Synthesis of Alginate-Capped Silver Nanoparticles under Microwave Irradiation

Plasmonic gas and chemical sensing

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