Strategies to synthesize various nanostructures of silver and their applications – a review

Khatoon, Umme Thahira; Rao, G. Appa; Mantravadi, Krishna Mohan; Öztekin, Yasemin

doi:10.1039/c8ra00440d

Cited by 43 publications

(27 citation statements)

References 129 publications

(155 reference statements)

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“…On the other hand, the void area has been used to tune the refractive index, increase the active region for catalysis, and advance the ability to tolerate cyclic volume modifications. [97]; (e) silver nanorods adapted from [98] and (f) silver nanoflower adapted from [69].…”

Section: Synthesis Of Agnps Used For Water Protection Applicationsmentioning

confidence: 99%

Silver Nanoparticles as Colorimetric Sensors for Water Pollutants

2020

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This review provides an up-to-date overview on silver nanoparticles-based materials suitable as optical sensors for water pollutants. The topic is really hot considering the implications for human health and environment due to water pollutants. In fact, the pollutants present in the water disturb the spontaneity of life-related mechanisms, such as the synthesis of cellular constituents and the transport of nutrients into cells, and this causes long / short-term diseases. For this reason, research continuously tends to develop always innovative, selective and efficient processes / technologies to remove pollutants from water. In this paper we will report on the silver nanoparticles synthesis, paying attention to the stabilizers and mostly used ligands, to the characterizations, to the properties and applications as colorimetric sensors for water pollutants. As water pollutants our attention will be focused on several heavy metals ions, such as Hg(II), Ni(II),Cu(II), Fe(III), Mn(II), Cr(III/V) Co(II) Cd(II), Pb(II), due to their dangerous effects on human health. In addition, several systems based on silver nanoparticles employed as pesticides colorimetric sensors in water will be also discussed. All of this with the aim to provide to readers a guide about recent advanced silver nanomaterials, used as colorimetric sensors in water.

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Section: Synthesis Of Agnps Used For Water Protection Applicationsmentioning

confidence: 99%

Silver Nanoparticles as Colorimetric Sensors for Water Pollutants

2020

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“…A imagem da amostra de AgNO3 observada na Figura 6 mostra uma morfologia elipsoidal, essa é uma das diversas formas em que as nanopartículas de prata podem ser obtidas a partir do AgNO3. Além da forma elipsoidal, as nanopartículas também podem ser produzidas nas seguintes formas: esférica, bastão, estrela, triângulo e tubo [24].…”

Section: Resultsunclassified

Caracterização estrutural e morfológica de compostos químicos para produção vítrea

Novais

Lima²,

Santos³

et al. 2019

Sci. Plena

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No presente trabalho foram realizadas medidas de Difração de Raios X (DRX), Microscopia Eletrônica de Varredura (MEV) e Espectroscopia por Energia Dispersiva (EED) em óxido de alumínio (Al2O3), carbonato de cálcio (CaCO3) e nitrato de prata (AgNO3). O difratograma do Al2O3 revelou a fase α ou corindo, a fase observada no CaCO3 foi a calcita, e no AgNO3 foram observadas as fases relacionadas a prata. Todos os difratogramas estudados apresentaram planos cristalinos. A imagem do Al2O3, obtida por MEV revelou a presença de aglomerados e uma morfologia formada por plaquetas hexagonais, no CaCO3 foi observada uma estrutura com forma romboédrica-hexagonal e no AgNO3 uma morfologia elipsoidal. A análise de EED realizada no Al2O3 mostrou a presença de alumínio e oxigênio, no CaCO3 foi observado cálcio, carbono e oxigênio. As análises de EED realizadas nas amostras investigadas revelaram compostos livres de impurezas. O presente trabalho tem como objetivo, caracterizar os compostos químicos que serão utilizados na produção de diferentes espécimes vítreas para aplicações dosimétricas.Palavras-chave: técnicas de caracterização, compostos químicos, vidros.

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“…The synthesis of supported (which is beyond the scope of this review) and colloidal AgNPs has been investigated extensively and, over the years, several techniques have been proposed for the synthesis of AgNPs. For a detailed view of such literature, we recommend review works and book chapters published in the last two years, such as [ 50 , 51 , 52 , 53 , 54 , 55 , 56 , 57 , 58 , 59 , 60 , 61 , 62 , 63 , 64 , 65 , 66 ], which deal with the synthesis of colloidal materials. Figure 1 summarizes the main approaches to synthetize AgNPs, including chemical reduction [ 67 , 68 ], photoreduction [ 69 , 70 , 71 ], microemulsion (reverse micelle) methods [ 72 , 73 ], electrochemical methods [ 74 , 75 , 76 ], evaporation-condensation processes [ 77 ], laser ablation [ 18 ], and biosynthesis [ 78 , 79 ].…”

Section: Silver Nanoparticlesmentioning

confidence: 99%

The Pros and Cons of the Use of Laser Ablation Synthesis for the Production of Silver Nano-Antimicrobials

et al. 2018

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Silver nanoparticles (AgNPs) are well-known for their antimicrobial effects and several groups are proposing them as active agents to fight antimicrobial resistance. A wide variety of methods is available for nanoparticle synthesis, affording a broad spectrum of chemical and physical properties. In this work, we report on AgNPs produced by laser ablation synthesis in solution (LASiS), discussing the major features of this approach. Laser ablation synthesis is one of the best candidates, as compared to wet-chemical syntheses, for preparing Ag nano-antimicrobials. In fact, this method allows the preparation of stable Ag colloids in pure solvents without using either capping and stabilizing agents or reductants. LASiS produces AgNPs, which can be more suitable for medical and food-related applications where it is important to use non-toxic chemicals and materials for humans. In addition, laser ablation allows for achieving nanoparticles with different properties according to experimental laser parameters, thus influencing antibacterial mechanisms. However, the concentration obtained by laser-generated AgNP colloids is often low, and it is hard to implement them on an industrial scale. To obtain interesting concentrations for final applications, it is necessary to exploit high-energy lasers, which are quite expensive. In this review, we discuss the pros and cons of the use of laser ablation synthesis for the production of Ag antimicrobial colloids, taking into account applications in the food packaging field.

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Strategies to synthesize various nanostructures of silver and their applications – a review

Cited by 43 publications

References 129 publications

Silver Nanoparticles as Colorimetric Sensors for Water Pollutants

Silver Nanoparticles as Colorimetric Sensors for Water Pollutants

Caracterização estrutural e morfológica de compostos químicos para produção vítrea

The Pros and Cons of the Use of Laser Ablation Synthesis for the Production of Silver Nano-Antimicrobials

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