Preparation of silver nanoparticles on ITO surfaces by a double-pulse method

Sandmann, G.; Dietz, H.; Plieth, W.

doi:10.1016/s0022-0728(00)00301-6

Cited by 187 publications

(139 citation statements)

References 13 publications

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“…On the second and consecutive cycles the potential of the peak IV shifts to -0.2 V vs. SCE and after the third cycle shown in Figure 6B curve 2, the cyclic voltammogram no longer changed in the following cycles. The appearance of the peak IV at more negative potential values after the first cycle might be due to the fact that, although the silver oxides have been reduced, some oxide nuclei still remain on the surface as has been shown by Sandman et al (28) and are able to catalyze the oxidation of borohydride at more negative potentials.…”

Section: The Oxidation Of Borohydride Ion On Silver In Alkaline Electmentioning

confidence: 73%

Oxidation of the Borohydride Ion at Silver Nanoparticles on a Glassy Carbon Electrode (GCE) Using Pulsed Potential Techniques

Hernández-Ramírez¹,

Alatorre-Ordaz²,

Yépez-Murrieta³

et al. 2009

ECS Trans.

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Direct oxidation borohydride fuel cells are very attractive energy conversion devices. Silver has been reported as one of the few materials which can catalyze an 8-electron oxidation. Potential step amperometric pulse techniques to synthesize nanostructured silver material on flat glassy carbon electrodes is reported and significant differences with bulk silver deposit have been observed. The oxidation of borohydride ion on the silver particles occurs at -0.025 V vs. SCE and the potential decreases towards negative values at longer cycle times. The oxidation current also decreases with the number of cycles, suggesting that the silver active sites become partially blocked by oxidation products of borohydride. The electroactive area per unit electrode area of silver was relatively low for particles deposited using potential step amperometric techniques on glassy carbon (0.002 cm2 per cm-2) compared with the area found at a polycrystalline silver electrode (0.103 cm2 per cm-2).

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Section: The Oxidation Of Borohydride Ion On Silver In Alkaline Electmentioning

confidence: 73%

Oxidation of the Borohydride Ion at Silver Nanoparticles on a Glassy Carbon Electrode (GCE) Using Pulsed Potential Techniques

Hernández-Ramírez¹,

Alatorre-Ordaz²,

Yépez-Murrieta³

et al. 2009

ECS Trans.

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“…4 The use of nanoparticles as potential drug carriers in the treatment of cancer has also been reported. Nanoparticles can be prepared using a variety of chemicals and physical methods, including chemical reduction, [5][6][7] photochemical reduction, [8][9][10][11] electrochemical reduction, 12,13 and heat vaporization. 14,15 The reagents can be inorganic compounds, such as sodium/potassium borohydrate, hydrazine, and salts of tartrate, or organic compounds, like sodium citrate, ascorbic acid, and amino acids, which are capable of being oxidized.…”

Section: Introductionmentioning

confidence: 99%

One-step green synthesis and characterization of leaf extract-mediated biocompatible silver and gold nanoparticles from Memecylon umbellatum

Arunachalam

Annamalai²,

Hari³

2013

IJN

190

112

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Abstract:In this experiment, green-synthesized silver and gold nanoparticles were produced rapidly by treating silver and gold ions with an extract of Memecylon umbellatum leaf. The reaction process was simple and easy to handle, and was monitored using ultraviolet-visible spectroscopy. The effect of the phytochemicals present in M. umbellatum, including saponins, phenolic compounds, phytosterols, and quinones, on formation of stable silver and gold nanoparticles was investigated by Fourier-transform infrared spectroscopy. The morphology and crystalline phase of the nanoparticles were determined by transmission electron microscopy and energy-dispersive x-ray spectroscopy. The results indicate that the saponins, phytosterols, and phenolic compounds present in the plant extract play a major role in formation of silver and gold nanoparticles in their respective ions in solution. The characteristics of the nanoparticles formed suggest application of silver and gold nanoparticles as chemical sensors in the future. Given the simple and eco-friendly approach for synthesis, these nanoparticles could easily be commercialized for large-scale production.

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“…In addition to their antibacterial activity which has been known since ancient times [6], various attributes of Ag nanoparticles have been determined such as antifungal activity [7], antiinflammatory effects [8] antiviral activity [9] antiangiogenesis activity [10] and antiplatelet activity [11]. There is a variety of chemical and physical techniques to prepare metal nanoparticles, such as chemical reduction [12,13], electrochemical reduction [14,15], photochemical reduction [16,17] and heat evaporation [18,19]. Although there are different techniques to synthesize metallic nanoparticles, these methods have many disadvantages, for instance, the use of hazardous chemicals, high energy consumption and generation of hazardous by-products [20].…”

Section: Introductionmentioning

confidence: 99%

Investigation of lichen based green synthesis of silver nanoparticles with response surface methodology

Yıldız

Ateş

Yılmaz

et al. 2014

Green Processing and Synthesis

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Abstract:In this study, silver (Ag) nanoparticles were successfully biosynthesized from AgNO 3 through a simple green route using the lichen extract [Cetraria islandica (L) Ach] as a reducing and stabilizing agent. The mean sizes of spherical Ag nanoparticles with diameters ranging from 5 nm to 29 nm were obtained at different reaction conditions. The nanoparticles were characterized using transmission electron microscopy (TEM), energy dispersive X-ray (EDX), ultraviolet-visible (UV-VIS) and Fourier transform infrared spectroscopy (FTIR) techniques. Response surface methodology (RSM) was used to investigate the effects of temperature, reaction time and AgNO 3 /lichen ratio on green synthesis of Ag nanoparticles. The results showed that the increase in reaction time and AgNO 3 / lichen ratio caused a decrease of particle size and the increase in temperature resulted in bigger particles.

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Preparation of silver nanoparticles on ITO surfaces by a double-pulse method

Cited by 187 publications

References 13 publications

Oxidation of the Borohydride Ion at Silver Nanoparticles on a Glassy Carbon Electrode (GCE) Using Pulsed Potential Techniques

Oxidation of the Borohydride Ion at Silver Nanoparticles on a Glassy Carbon Electrode (GCE) Using Pulsed Potential Techniques

One-step green synthesis and characterization of leaf extract-mediated biocompatible silver and gold nanoparticles from Memecylon umbellatum

Investigation of lichen based green synthesis of silver nanoparticles with response surface methodology

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