scholarly journals Comparison of electrocatalytic activity for glucose electrooxidation of gold nanoparticles fabricated by different methods

Chemija ◽  
2019 ◽  
Vol 30 (1) ◽  
Author(s):  
Daina Upskuvienė ◽  
Aldona Balčiūnaitė ◽  
Jūratė Vaičiūnienė ◽  
Algirdas Selskis ◽  
Rimantas Vaitkus ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Electrocatalytic Activity ◽  
Au Nanoparticles ◽  
Carbon Support ◽  
Alkaline Media ◽  
Carbon Powder ◽  
Microwave Assisted Synthesis ◽  
One Pot ◽  
Microwave Assisted ◽  
Glucose Electrooxidation

In this study, the gold nanoparticles (AuNPs) without carbon support were prepared using the well-known citrate reduction method. The carbon supported AuNPs nanocomposites were fabricated by two different approaches: chemical adsorption of AuNPs from the prepared citrate stabilized AuNP colloidal solution on the carbon powder surface and one-pot microwave-assisted synthesis. The nanocomposites were characterized using scanning electron microscopy (SEM) and inductively coupled plasma optical emission spectroscopy (ICP-OES). The electrocatalytic activity of the prepared catalysts was evaluated for the electrooxidation of glucose in an alkaline media using cyclic voltammetry. The highest electrocatalytic activity was observed for the catalyst of carbon supported Au nanoparticles prepared by microwave-assisted synthesis, followed by the catalyst of carbon supported Au nanoparticles prepared by means of the adsorption method, whereas the pure Au nanoparticles without carbon support exhibited the lowest electrocatalytic properties for glucose electrooxidation.

One pot microwave assisted synthesis of bisphosphonate alkene capped gold nanoparticles

RSC Advances ◽  
2014 ◽  
Vol 4 (103) ◽  
pp. 59315-59322 ◽  
Author(s):  
Romain Aufaure ◽  
Yoann Lalatonne ◽  
Nicole Lièvre ◽  
Olivier Heintz ◽  
Laurence Motte ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Microwave Assisted Synthesis ◽  
One Pot ◽  
Microwave Assisted

One pot microwave assisted synthesis of bisphosphonate alkene capped gold nanoparticles.

scholarly journals Microwave-Assisted Synthesis of Pt-Au Nanoparticles with Enhanced Electrocatalytic Activity for the Oxidation of Formic Acid

2017 ◽  
Vol 224 ◽  
pp. 56-63 ◽  
Author(s):  
Gema Cabello ◽  
Rogério A. Davoglio ◽  
Fabian W. Hartl ◽  
Jose F. Marco ◽  
Ernesto C. Pereira ◽  
...  
Keyword(s):  
Formic Acid ◽  
Electrocatalytic Activity ◽  
Au Nanoparticles ◽  
Microwave Assisted Synthesis ◽  
Microwave Assisted

Microwave-assisted one-pot synthesis of anisotropic gold nanoparticles with active high-energy facets for enhanced catalytic and metal enhanced fluorescence activities

CrystEngComm ◽  
2018 ◽  
Vol 20 (30) ◽  
pp. 4297-4304 ◽  
Author(s):  
N. V. S. Praneeth ◽  
Santanu Paria
Keyword(s):  
Gold Nanoparticles ◽  
Au Nanoparticles ◽  
High Energy ◽  
Enhanced Fluorescence ◽  
Rhombic Dodecahedron ◽  
Metal Enhanced Fluorescence ◽  
One Pot ◽  
Microwave Assisted ◽  
Green Route ◽  
Anisotropic Gold Nanoparticles

Rhombic dodecahedron Au nanoparticles synthesized via a microwave assisted green route with high energy {110} facets are highly efficient for catalysis and metal enhanced fluorescence activities.

scholarly journals One-Pot Microwave-Assisted Synthesis of Water-Soluble Pyran-2,4,5-triol Glucose Amine Schiff Base Derivative: XRD/HSA Interactions, Crystal Structure, Spectral, Thermal and a DFT/TD-DFT

Crystals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 117
Author(s):  
Yousef Hijji ◽  
Rajeesha Rajan ◽  
Hamdi Ben Yahia ◽  
Said Mansour ◽  
Abdelkader Zarrouk ◽  
...  
Keyword(s):  
Schiff Base ◽  
Molecular Orbital ◽  
Density Functional ◽  
Condensation Reaction ◽  
3D Structure ◽  
Water Soluble ◽  
Microwave Assisted Synthesis ◽  
One Pot ◽  
Microwave Assisted ◽  
Td Dft

The(3R,4R,6R)-3-(((E)-2-hydroxybenzylidene)amino)-6-(hydroxymethyl)tetrahydro-2H-pyran-2,4,5-triol water-soluble Glucose amine Schiff base (GASB-1) product was made available by condensation of 2-hydroxybenzaldehyde with (3R,6R)-3-amino-6-(hydroxymethyl)-tetra-hydro-2H-pyran-2,4,5-triol under mono-mode microwave heating. A one-pot 5-minute microwave-assisted reaction was required to complete the condensation reaction with 90% yield and without having byproducts. The 3D structure of GASB-1 was solved from single crystal X-ray diffraction data and computed by DFT/6-311G(d,p). The Hirshfeld surface analysis (HSA), molecular electronic potential (MEP), Mulliken atomic charge (MAC), and natural population analysis (NPA) were performed. The IR and UV-Vis spectra were matched to their density functional theory (DFT) relatives and the thermal behavior was resolved in an open-room condition via thermogravimetry/Derivative thermogravimetry (TG/DTG) and differential scanning calorimetry (DSC). The highest occupied molecular orbital/lowest unoccupied molecular orbital (HOMO/LUMO), density of state (DOS), and time-dependence TD-DFT computations were correlated to the experimental electron transfer in water and acrylonitrile solvents.

Microwave-assisted synthesis of 1-aryl-1H-indazoles via one-pot two-step Cu-catalyzed intramolecular N-arylation of arylhydrazones

2005 ◽  
Vol 46 (44) ◽  
pp. 7553-7557 ◽  
Author(s):  
Chittari Pabba ◽  
Hong-Jun Wang ◽  
Susan R. Mulligan ◽  
Zhen-Jia Chen ◽  
Todd M. Stark ◽  
...  
Keyword(s):  
Microwave Assisted Synthesis ◽  
One Pot ◽  
Microwave Assisted

Sensitive Hg2+ Ion Detection Using Metal Enhanced Fluorescence of Novel Polyvinyl Pyrrolidone (PVP)-Templated Gold Nanoparticles

2018 ◽  
Vol 72 (11) ◽  
pp. 1645-1652 ◽  
Author(s):  
Kailong Dong ◽  
Jiasheng Zhou ◽  
Taiqun Yang ◽  
Shan Dai ◽  
Hao Tan ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Detection Limit ◽  
Au Nanoparticles ◽  
Polyvinyl Pyrrolidone ◽  
Quenching Mechanism ◽  
Ion Detection ◽  
Enhanced Fluorescence ◽  
Metal Enhanced Fluorescence ◽  
One Pot ◽  
Au Nps

In this study, we report a straightforward strategy for Hg2+ ion detection. Fluorescent Au nanoparticles (NPs) were one-pot synthesized using a polymer (polyvinyl pyrrolidone [PVP]) as both capping and fluorescence agent. The as-synthesized PVP-Au NPs showed a remarkably rapid response selectively for Hg2+ ions compared to 14 other metal ions. The detection limit of Hg2+ was estimated at 100 nM. We discuss the emission and quenching mechanism of the PVP-Au NPs, the former being attributed to metal enhanced fluorescence and the latter being related to static quenching by Hg2+. The fluorescence of PVP-Au NPs offers an efficient and reliable strategy for Hg2+ ions detection. They therefore have a great potential for applications in health and environmental monitoring.

Enhancing the electrocatalytic activity and stability of Prussian blue analogues by increasing their electroactive sites through the introduction of Au nanoparticles

Nanoscale ◽  
2021 ◽  
Author(s):  
Roger Sanchis-Gual ◽  
Toribio F. Otero ◽  
Marc Coronado Puchau ◽  
Eugenio Coronado
Keyword(s):  
Prussian Blue ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Electrocatalytic Activity ◽  
Au Nanoparticles ◽  
Alkaline Media ◽  
Prussian Blue Analogues ◽  
Earth Abundant

Prussian blue analogues (PBAs) have been proven as excellent earth‐abundant electrocatalysts for the oxygen evolution reaction (OER) in acidic, neutral and alkaline media. Still, further improvements can be achieved by...

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