Preparation and Characterization of Silver Nanoparticles Embedded in Silica Sol Particles

Kang, Byung-Kyu; Son, Dong-Min; Kim, You-Hyuk

doi:10.5012/bkcs.2011.32.10.3707

Cited by 5 publications

(7 citation statements)

References 27 publications

(11 reference statements)

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“…The peak stand at 1326 cm À 1 is representative of the symmetric nitro stretch ν s (NO 2 ) and at 1549 cm À 1 can be assigned as an aromatic ring stretching mode (Grubisha et al, 2003). The peaks at 1139 and 1048 cm À 1 are attributed to CH 3 rocking, C-N stretching and C-N bending (Kang et al, 2011). However, observed NO 2 and aromatic ring stretch are found to be 1332 and 1557 cm À 1 , which is slightly different from the Raman spectrum of DTNB in previous studies.…”

Section: Sers Of Aunps@mesosio 2 With Different Amounts Of Gold Contentmentioning

confidence: 99%

AuNPs@mesoSiO2 composites for SERS detection of DTNB molecule

Lin

Chang

2014

Biosensors and Bioelectronics

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Section: Sers Of Aunps@mesosio 2 With Different Amounts Of Gold Contentmentioning

confidence: 99%

AuNPs@mesoSiO2 composites for SERS detection of DTNB molecule

Lin

Chang

2014

Biosensors and Bioelectronics

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“…A satisfactory sample was sought for use in the EC tests as follows: a clear solution with minimal presence of turbidity such that the treatment results are directly linked to the presence of NPs using a yellow or orange indicative color (indicative of the presence of AgNPs) and an absorbance peak near 0.5 AU (absorbance unit) of approximately 400 nm, such that the values would be close to those found from literature (KHAN, et al, 2011) (CUMBERLAND & LEAD, 2009 (CHOI, et al, 2008) (KANG, et al, 2011).…”

Section: Synthesis and Characterizationmentioning

confidence: 96%

Synthetic wastewaters treatment by electrocoagulation to remove silver nanoparticles produced by different routes

Matias

Melegari

Vicentini

et al. 2015

Journal of Environmental Management

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Nanoscience is a field that has stood out in recent years. The accurate long-term health and environmental risks associated with these emerging materials are unknown. Therefore, this work investigated how to eliminate silver nanoparticles (AgNPs) from synthetic effluents by electrocoagulation (EC) due to the widespread use of this type of nanoparticle (NP) in industry and its potential inhibition power over microorganisms responsible for biological treatment in effluent treatment plants. Synthesized AgNPs were studied via four different routes by chemical reduction in aqueous solutions to simulate the chemical variations of a hypothetical industrial effluent, and efficiency conditions of the EC treatment were determined. All routes used silver nitrate as the source of silver ions, and two synthesis routes were studied with sodium citrate as a stabilizer. In route I, sodium citrate functioned simultaneously as the reducing agent and stabilizing agent, whereas route II used sodium borohydride as a reducing agent. Route III used D-glucose as the reducing agent and sodium pyrophosphate as the stabilizer; route IV used sodium pyrophosphate as the stabilizing agent and sodium borohydride as the reducing agent. The efficiency of the EC process of the different synthesized solutions was studied. For route I, after 85 minutes of treatment, a significant decrease in the plasmon resonance peak of the sample was observed, which reflects the efficiency in the mass reduction of AgNPs in the solution by 98.6%. In route II, after 12 minutes of EC, the absorbance results reached the detection limit of the measurement instrument, which indicates a minimum reduction of 99.9% of AgNPs in the solution. During the 4 minutes of treatment in route III, the absorbance intensities again reached the detection limit, which indicates a minimum reduction of 99.8%. In route IV, after 10 minutes of treatment, a minimum AgNP reduction of 99.9% was observed. Based on these results, it was possible to verify that the solutions containing citrate considerably increased the necessary times required to eliminate AgNPs from the synthesized effluent, whereas solutions free of this reagent showed better results on floc formation and, therefore, are best for the treatment. The elimination of AgNPs from effluents by EC proved effective for the studied routes.

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“…112,113 The core or the shell material demonstrates the unique core-shell nanostructure abilities. It is noteworthy to mention that we can govern the functionality of core-shell material 56,114 by altering the constituting materials 115,116 or the concentration of either core or the shell. 108 The acting of the coating material involves enhancing stability, functionalization, or restrained release of the core substance.…”

Section: Synthesis Of Ag Core-shell Nanostructurementioning

confidence: 99%

Hybrid silver nanoparticles: Modes of synthesis and various biomedical applications

Singh,

Maddiboyina

et al. 2024

Electron

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In the present day, there is a growing trend of employing new strategies to synthesize hybrid nanoparticles, which involve combining various functionalities into a single nanocomposite system. These modern methods differ significantly from the traditional classical approaches and have emerged at the forefront of materials science. The fabrication of hybrid nanomaterials presents an unparalleled opportunity for applications in a wide range of areas, including therapy to diagnosis. The focus of this review article is to shed light on the different modalities of hybrid nanoparticles, providing a concise description of hybrid silver nanoparticles, exploring various modes of synthesis and classification of hybrid silver nanoparticles, and highlighting their advantages. Additionally, we discussed core‐shell silver nanoparticles and various types of core and shell combinations based on the material category, such as dielectric, metal, or semiconductor. The two primary classes of hybrid silver nanoparticles were also reviewed. Furthermore, various hybrid nanoparticles and their methods of synthesis were discussed but we emphasize silica as a suitable candidate for hybridization alongside metal nanoparticles. This choice is due to its hydrophilic surface qualities and high surface charge, which provide the desired repulsive forces to minimize aggregation between the metal nanoparticles in the liquid solution. Silica shell encapsulation also provides chemical inertness, robustness and the adaptability to the desired hybrid nanoparticle. Therefore, among all the materials used to coat metal nanoparticles; silica is highly approved.

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Preparation and Characterization of Silver Nanoparticles Embedded in Silica Sol Particles

Cited by 5 publications

References 27 publications

AuNPs@mesoSiO2 composites for SERS detection of DTNB molecule

AuNPs@mesoSiO2 composites for SERS detection of DTNB molecule

Synthetic wastewaters treatment by electrocoagulation to remove silver nanoparticles produced by different routes

Hybrid silver nanoparticles: Modes of synthesis and various biomedical applications

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