Study of Ag and Au Nanoparticles Synthesized by ArcDischarge in Deionized Water

Tien, Der-Chi; Chen, Liang-Chia; Thai, Nguyen Van; Ashraf, Sana

doi:10.1155/2010/634757

Cited by 27 publications

(10 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Recently, the interest in Ag nanostructures is once more bloomed due to the applicability of Ag NPs in brand-new applications such as food additives [12], nanomedicine and biomedical applications [13][14][15][16], and surface-enhanced Raman scattering substrates for a biosensor [17][18][19][20][21]. To prepare Ag NPs, many routes have been used such as chemical, physical, and biomedical methods [1,4,16,[22][23][24][25][26] which have similar steps in preparing and preserving Ag NPs in a solution. In these methods, the chemical route is the most widely used method in which ion Ag + originated from silver salt is reduced by different reducing agents such as acetate (Turkevich method) or sodium borohydride NaBH 4 (Brust-Schiffrin synthesis), plant extract, or natural-origin chemical [3,27].…”

Section: Introductionmentioning

confidence: 99%

Simple Controlling Ecofriendly Synthesis of Silver Nanoparticles at Room Temperature Using Lemon Juice Extract and Commercial Rice Vinegar

Luu

Cao

Nguyen

et al. 2020

Journal of Nanotechnology

View full text Add to dashboard Cite

Silver nanoparticles were prepared in an ecofriendly manner at room temperature via the stepwise-modified Tollens route using the lemon juice extract and commercial rice vinegar. In this work, the lemon juice extract—a natural-origin chemical—was used as a reducing and stabilizing agent, and commercial rice vinegar was used to create a low acidic environment to control the silver nanoparticle growth via the stepwise method. The average dimension of silver nanoparticles was qualitatively evaluated through the UV-Vis spectra via the Mie theory. The X-ray diffraction and field emission scanning electron spectroscopy were employed to study the purity, the crystal structure, and the morphology of samples, respectively. Due to the weak activity and low purity of ecofriendly chemicals, the reaction and baking times strongly affect the preparation efficiency in obtaining small-size silver nanoparticles (∼40 nm). The highest efficiency was obtained with 24 h reaction time and 48 h baking time. The bimodal distribution of the size of silver nanoparticles was observed by UV-Vis analysis and field emission scanning electron microscopy. The obtained small-size silver nanoparticles (∼40 nm) have a uniform dimension. The quality of the obtained silver nanoparticles was evaluated through the conducting properties of silver paint made from ecosynthesized silver nanoparticles which showed a promising prospect to develop green-synthesized silver paint working at room temperature.

show abstract

Section: Introductionmentioning

confidence: 99%

Simple Controlling Ecofriendly Synthesis of Silver Nanoparticles at Room Temperature Using Lemon Juice Extract and Commercial Rice Vinegar

Luu

Cao

Nguyen

et al. 2020

Journal of Nanotechnology

View full text Add to dashboard Cite

show abstract

“…EDX analysis is known for usage of elemental analysis, including metal elements in their metallic or ionized form [ 54 , 55 , 56 , 57 ], and was used for probing metallic Ag and ionized Ag in the Ag-EDTA-SBA-15 complex, as shown in Table 2 . Most of the elements Ag, Si, and O had atomic percentages of 11.1 wt %–14.4 wt %, 72.3 wt %‒76.0 wt %, and 10.5 wt %‒10.9 wt %, respectively.…”

Section: Resultsmentioning

confidence: 99%

Synthesis of High Valence Silver-Loaded Mesoporous Silica with Strong Antibacterial Properties

Chen

Huang

et al. 2016

IJERPH

View full text Add to dashboard Cite

A simple chemical method was developed for preparing high valence silver (Ag)-loaded mesoporous silica (Ag-ethylenediaminetetraacetic acid (EDTA)-SBA-15), which showed strong antibacterial activity. Ag-EDTA-SBA-15 exhibited stronger and more effective antibacterial activity than commercial Ag nanoparticles did, and it offered high stability of high valence silver in the porous matrix and long-lasting antibacterial activity. The synthesized materials were characterized using Fourier transform infrared spectroscopy, powder X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) analysis, and transmission electron microscopy (TEM). Ag existed in both surface complexation and Ag particles. EDTA anchored within a porous structure chelated Ag ions in higher oxidation states and prevented their agglomeration and oxidation reduction. The XRD results showed that most Ag in the Ag-EDTA-SBA-15 existed in higher oxidation states such as Ag(II) and Ag(III). However, the XPS and TEM results showed that Ag easily reduced in lower oxidation states and agglomerated as Ag particles on the exterior layer of the SBA-15.

show abstract

“…(6 a) indicates the zeta potential of Au: CuO nanocomposite in DIW, it has a maximum peak at -54 mV, it indicates that the negatively charged of Au: CuO nanocomposite in DIW. The amount of zeta potential is nearest to 60 mV indicating that the colloid is good stability against aggregation [28] and well dispersed in DIW as a result to the t presence of the ionic characteristic for micelles, the electrostatic repulsive forces between nanoparticles in water suspension prevent them from agglomeration and sedimentation [29]. Figs.…”

Section: -Zeta Potential Measurementmentioning

confidence: 99%

Synthesis and Characterization of Au:CuO Nanocomposite by Laser Soldering on Porous Silicon for Photodetector

Rashed

Moatasemballah

2017

JNUS

View full text Add to dashboard Cite

This work aimed to the synthesize of composite Au:CuO (NPs) by pulsed laser soldering process. The optical properties, stability, structural properties and surface morphology of Au:CuO nanocomposite were characterized by UV-VIS spectrophotometer, Zeta potential measurement, XRay Diffraction pattern and Atomic Force Microscope respectively. The band gap of Au doped CuO is about 1.95 eV. The amount of zeta potential is -54 mV, its indicating that the negatively charged of Au: CuO nanocomposite in deionized water and the colloid is good stability against aggregation. Surface morphology of Au:CuO nanocomposite show a large number of particles have diameter about 55nm.Au: CuO nanocomposite deposited on porous silicon by drop casting technique for preparation of silicon photodetector, the electrical properties prove that band gap alignment between Au: CuO nanocomposite and PS facilitates the electron transfer and further increases the photoresponsitivity and Quantum efficiency.

show abstract

Study of Ag and Au Nanoparticles Synthesized by ArcDischarge in Deionized Water

Cited by 27 publications

References 27 publications

Simple Controlling Ecofriendly Synthesis of Silver Nanoparticles at Room Temperature Using Lemon Juice Extract and Commercial Rice Vinegar

Simple Controlling Ecofriendly Synthesis of Silver Nanoparticles at Room Temperature Using Lemon Juice Extract and Commercial Rice Vinegar

Synthesis of High Valence Silver-Loaded Mesoporous Silica with Strong Antibacterial Properties

Synthesis and Characterization of Au:CuO Nanocomposite by Laser Soldering on Porous Silicon for Photodetector

Contact Info

Product

Resources

About