Synthesis and characterization of gold nanoparticles with the aid of green reducing agent through the free surfactant microwave method

2016 ◽  
Vol 27 (9) ◽  
pp. 9073-9077 ◽  
Author(s):  
Alireza Mohadesi ◽  
Mehdi Ranjbar ◽  
Ashraf Salmanipour
Keyword(s):  
Gold Nanoparticles ◽  
Reducing Agent ◽  
Synthesis And Characterization ◽  
Microwave Method

scholarly journals Synthesis and characterization of gold nanoparticles in solution using chitosan as reducing agent

Respuestas ◽  
2019 ◽  
Vol 24 (2) ◽  
pp. 49-55
Author(s):  
Francisco Javier Flórez Barajas ◽  
Zayda Constanza Sánchez Acevedo ◽  
Heriberto Peña Pedraza
Keyword(s):  
Gold Nanoparticles ◽  
Metallic Nanoparticles ◽  
Noble Metals ◽  
Reducing Agent ◽  
Synthesis Process ◽  
Synthesis And Characterization ◽  
Potential Applications ◽  
Low Toxicity ◽  
Nanometric Size

Currently the metallic nanoparticles, in particular of noble metals like gold are gaining importance due to their potential applications in various fields, as their physicochemical properties and their low toxicity the materials become of great importance. In this paper the synthesis of gold nanoparticles was carried out in solution using a reducing agent as is the biomolecule chitosan as reducing agent and were also characterized by a spectrophotometric technique as ultraviolet visible to verify the efficiency of the synthesis process, the spectrum showed that the synthesized nanoparticles have an absorption band at 525 nm. characteristic of gold particles to nanometric size.

Preparation and characterization of gold nanoparticles using ascorbic acid as reducing agent in reverse micelles

2009 ◽  
Vol 44 (3) ◽  
pp. 754-758 ◽  
Author(s):  
Kai Sun ◽  
Jingxia Qiu ◽  
Jiwei Liu ◽  
Yuqing Miao
Keyword(s):  
Gold Nanoparticles ◽  
Ascorbic Acid ◽  
Reverse Micelles ◽  
Reducing Agent

Synthesis and Characterization of Water-Soluble Monolayer-Protected Gold Nanoparticles

2011 ◽  
Vol 415-417 ◽  
pp. 617-620 ◽  
Author(s):  
Yan Su ◽  
Ying Yun Lin ◽  
Yu Li Fu ◽  
Fan Qian ◽  
Xiu Pei Yang ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Particle Size ◽  
Gold Nanoparticles ◽  
Average Particle Size ◽  
Water Soluble ◽  
Synthesis And Characterization ◽  
Average Particle ◽  
Transmission Electron

Water-soluble gold nanoparticles (AuNPs) were prepared using 2-mercapto-4-methyl-5- thiazoleacetic acid (MMTA) as a stabilizing agent and sodium borohydride (NaBH4) as a reducing agent. The AuNPs product was analyzed by transmission electron microscopy (TEM), UV-vis absorption spectroscopy and Fourier transform infrared spectroscopy (FTIR). The TEM image shows that the particles were well-dispersed and their average particle size is about 5 nm. The UV-vis absorption and FTIR spectra confirm that the MMTA-AuNPs was stabilized by the carboxylate ions present on the surface of the AuNPs.

Synthesis and characterization of gold nanoparticles usingHypericum perforatumandNettleaqueous extracts: A comparison with turkevich method

2018 ◽  
Vol 38 (2) ◽  
pp. 508-517 ◽  
Author(s):  
Abbas Jafarizad ◽  
Khadijeh Safaee ◽  
Behrouz Vahid ◽  
Alireza Khataee ◽  
Duygu Ekinci
Keyword(s):  
Gold Nanoparticles ◽  
Synthesis And Characterization

Synthesis and characterization of biopolymer agar mediated gold nanoparticles

2015 ◽  
Vol 141 ◽  
pp. 114-117 ◽  
Author(s):  
Jong-Whan Rhim ◽  
Paulraj Kanmani
Keyword(s):  
Gold Nanoparticles ◽  
Synthesis And Characterization

A green chemistry approach for the synthesis and characterization of bioactive gold nanoparticles using Azolla microphylla methanol extract

2014 ◽  
Vol 8 (2) ◽  
pp. 123-135 ◽  
Author(s):  
Selvaraj Kunjiappan ◽  
Ranjana Chowdhury ◽  
Chiranjib Bhattacharjee
Keyword(s):  
Gold Nanoparticles ◽  
Green Chemistry ◽  
Methanol Extract ◽  
Synthesis And Characterization ◽  
Azolla Microphylla

Synthesis and Characterization of Gold Nanoparticles Synthesized in Gel and Paper by Electrolysis

2019 ◽  
Vol 824 ◽  
pp. 163-167
Author(s):  
Pema Dechen ◽  
Ekasith Somsook
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Gold Nanoparticles ◽  
Room Temperature ◽  
Synthesis And Characterization ◽  
Visible Spectroscopy ◽  
Gold Leaf ◽  
Uv Visible ◽  
Scanning Electron

In this report, synthesis and characterization of gold nanoparticles (AuNPs) from gold leaf by electrolysis in two different media (gel and paper) in presence of sodium chloride (NaCl), glucose (C6H12O6) and polyvinyl pyrrolidone (PVP) at room temperature were investigated. Graphite was used as two electrodes, NaCl was used as an electrolyte, C6H12O6 was used as reducing agent and PVP was used as stabilizer to control the aggregation of the nanoparticles. UV-Visible spectroscopy (UV-Vis) and scanning electron microscopy (SEM) were used to confirm the characteristics and morphologies of the synthesized AuNPs.

The Synthesis and Characterization of PEG-SH-Modified Gold Nanoparticle in One-Pot Synthesis by Stenotrophomonas maltophilia

2019 ◽  
Vol 19 (11) ◽  
pp. 7278-7284
Author(s):  
Jian-Yuan Huang ◽  
Min-Hua Chen ◽  
Feng-Huei Lin
Keyword(s):  
Gold Nanoparticles ◽  
Gold Nanoparticle ◽  
Stenotrophomonas Maltophilia ◽  
Culture Medium ◽  
Synthesis And Characterization ◽  
One Pot ◽  
Residual Solvent ◽  
Green Route ◽  
The Relationship

Colloidal gold nanoparticles have been researched and utilized in many technical applications. However, the conventionalmethods to produce polyethyleneglycol (PEG) immobilized gold nanoparticles have to take several steps, including residual solvent removing. In the study, we propose an idea green route to synthesize gold nanoparticles by using Stenotrophomonas maltophilia in a one-pot reaction. The relationship between Au precursor and S. maltophilia was evaluated systematically. After PEG-SH addition, the bacterial cell wall was broken down and the synthetic nanoparticles could be released into culture medium. Furthermore, we identified that the crystal structure of synthetic gold nanoparticle was face-center cubic and PEG-SH was immobilized on synthetic gold nanoparticle ideally. The size of Au-PEG-SH was smaller than 30 nm. These findings suggest that gold nanoparticle with PEG-SH modification could be prepared in an eco-friendly one-pot reaction through the metabolic activity of S. maltophilia.

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