Electrochemical preparation of silver and gold nanoparticles: Characterization by confocal and surface enhanced Raman microscopy

Plieth, W.; Dietz, H.; Anders, A.; Sandmann, G.; Meixner, Alfred J.; Weber, Maggie L.; Kneppe, H.

doi:10.1016/j.susc.2004.02.042

Cited by 71 publications

(51 citation statements)

References 19 publications

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“…Size and shape control of AgNP has been shown by Ueda et al and Plieth et al [72,80] using a double pulse electroreduction method, which is based on an extremely short nucleation pulse of high cathodic polarization followed by a much longer growth pulse at low cathodic over-voltage (Fig. 15).…”

Section: Electrochemical Methodsmentioning

confidence: 97%

Synthetic Routes for the Preparation of Silver Nanoparticles

Pacioni

Borsarelli

Rey

et al. 2015

Engineering Materials

117

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In this chapter, we revise some of the most relevant and widely used synthetic routes available for the preparation of metallic silver nanoparticles. Particular emphasis has been focused in the rationale involved in the formation of the nanostructures, from the early metallic silver atoms formation, passing by atoms nucleation and concluding in the growth of silver nanostructures. We hope the reader will find in this chapter a valuable tool to better understand the relevance of the experimental conditions in the resulting silver nanoparticle size, shape and overall properties.

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Section: Electrochemical Methodsmentioning

confidence: 97%

Synthetic Routes for the Preparation of Silver Nanoparticles

Pacioni

Borsarelli

Rey

et al. 2015

Engineering Materials

117

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“…3,[4][5][6][7][8][9][10][11] In the present work, based on in situ SERS, we obtained novel insight into the adsorption and reactivity of CN¯ at the surface of a growing Au, Ag and Cu cathodes.…”

Section: Introductionmentioning

confidence: 99%

A SERS Investigation of Cyanide Adsorption and Reactivity during the Electrodeposition of Gold, Silver, and Copper from Aqueous Cyanocomplexes Solutions

et al. 2008

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In this paper we report on the reactivity of adsorbed cyanide deriving from ligand release during metal electrodeposition from cyanocomplex solutions of Au(I), Au(III), Ag(I) and Cu(I) in H 2 O and D 2 O. When CN¯ is adsorbed at cathodic potentials in excess of the HER threshold, metal-dependent reactivity can be detected by SERS. Finite surface coverages with adsorbed CN¯ at such cathodic potentials can be obtained only if CN¯ is delivered directly to the cathode surface as by decomplexing of the cyanocomplexes of the metals undergoing cathodic reduction. In Au(I) and Au(III) baths, Au-CN¯ reacts with Au-H• and is hydrogenated to adsorbed CH 2 =NH and CH 3 -NH 2 .In Ag(I) baths, Ag-CN¯ reacts with Ag-H • giving rise to polycyanogens. No reactivity of Cu-CN¯ was found, under otherwise identical conditions. Our conclusions are supported also by dedicated DFT molecular computations.

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“…For example, AuNPs are often stabilized by thiol-capping agents (Yu and Irudayaraj 2007 ) that impart negative or positive charges to the particles. The reduction of the metal salt can be carried out electrochemically (Plieth et al 2005, Huang et al 2006a, 2007, Starowicz et al 2006, photochemically (Pillai and Kamat 2004, McGilvray et al 2006, Sakamoto et al 2007, sonochemically (Jiang et al 2004, Park et al 2006, or using chemical reductants such as citrates (Pillai and Kamat 2004 ), hydrides (Kariuki et al 2004, Pal et al 2007, alcohols (Wiley et al 2004 ), hydrogen (Evanoff and Chumanov 2004 ), hydroxylamine ), or hydrazine (Shi et al 2006 ). By choosing a specific reductant, stabilizer, temperature, and concentrations of the reactants, the shapes and sizes of the NPs can be controlled, as shown in Figure 2 .…”

Section: Synthesis/fabrication and Functionalization Of Aunp Probesmentioning

confidence: 99%

Detection of chemical pollutants in water using gold nanoparticles as sensors: a review

Wang

2012

Reviews in Analytical Chemistry

147

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Rapid and accurate evaluation of pollutant contamination in water is one of the key tasks of environmental monitoring. To make onsite assessment feasible, the analytical tools should be easy to operate, with minimal sample preparation needs. Gold nanoparticle (AuNP)-based sensors have the potential to detect toxins, heavy metals, and inorganic and organic pollutants in water rapidly with high sensitivity, and they are expected to play an increasingly important role in environmental monitoring. In this article, the synthesis, fabrication and functionalization of AuNPs are discussed, and the recent advances in the development and application of AuNP-based sensors for the determination of various pollutants contamination in water are reviewed.

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Electrochemical preparation of silver and gold nanoparticles: Characterization by confocal and surface enhanced Raman microscopy

Cited by 71 publications

References 19 publications

Synthetic Routes for the Preparation of Silver Nanoparticles

Synthetic Routes for the Preparation of Silver Nanoparticles

A SERS Investigation of Cyanide Adsorption and Reactivity during the Electrodeposition of Gold, Silver, and Copper from Aqueous Cyanocomplexes Solutions

Detection of chemical pollutants in water using gold nanoparticles as sensors: a review

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