The Mechanism of Electrochemical Oxidation of Sulphite on Gold Nanoparticles

2019 ◽  
Keyword(s):  
Gold Nanoparticles ◽  
Electrochemical Oxidation

Electrochemical Oxidation of Methotrexate Using Pheniramine Maleate Functionalized Gold Nanoparticles Modified Electrode

2018 ◽  
Vol 16 (1) ◽  
pp. 8-12 ◽  
Author(s):  
Muhammad Saqaf Jagirani ◽  
Sarfaraz Ahmed Mahesar ◽  
Sirajuddin ◽  
Syed Tufail Hussain Sherazi ◽  
Munawar Saeed Qureshi ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Electrochemical Oxidation ◽  
Modified Electrode ◽  
Functionalized Gold Nanoparticles ◽  
Pheniramine Maleate

Electrochemical Response of Gold Nanoparticles at a Graphite Electrode

2014 ◽  
Vol 1040 ◽  
pp. 297-302 ◽  
Author(s):  
D.O. Perevezentseva ◽  
E.V. Gorchakov
Keyword(s):  
Gold Nanoparticles ◽  
Cyclic Voltammetry ◽  
Electrochemical Oxidation ◽  
Phase Structure ◽  
Graphite Electrode ◽  
Supporting Electrolyte ◽  
Potential Range ◽  
Cyclic Voltammogram ◽  
Cathodic Peak ◽  
Graphite Electrodes

The electrochemical activity of gold nanoparticles at graphite electrodes by the method of cyclic voltammetry is studied. In this article the nature of the supporting electrolyte, modification time of graphite electrode by gold nanoparticles and the potential range on the value of the “inverse” cathodic peak are investigated. The “inverse” cathodic peak of gold nanoparticles formed in the reaction mixture HAuCl4:Na3C6H5O7:NaBH4=1:1:4 is observed on the cathodic branch of cyclic voltamperegram at Ec = 0.05 V at graphite electrode. The mechanism of stepwise electrochemical oxidation and reduction of the phase structure of gold on the surface of the graphite electrode in 0.1 M NaOH is offered. The “inverse” cathodic peak of gold nanoparticles on the cathodic branch of cyclic voltammogram at graphite electrode is caused by oxidation of Au2O to Au2O3.<br /><br />

Surface coverage and size effects on electrochemical oxidation of uniform gold nanoparticles

2015 ◽  
Vol 53 ◽  
pp. 11-14 ◽  
Author(s):  
Donghyeop Han ◽  
Sung-Soo Kim ◽  
Yang-Rae Kim ◽  
Byeong-Hyeok Sohn ◽  
Taek Dong Chung
Keyword(s):  
Gold Nanoparticles ◽  
Electrochemical Oxidation ◽  
Size Effects ◽  
Surface Coverage

scholarly journals Atomically thin Pt shells on Au nanoparticle cores: facile synthesis and efficient synergetic catalysis

2016 ◽  
Vol 4 (9) ◽  
pp. 3278-3286 ◽  
Author(s):  
C. Engelbrekt ◽  
N. Šešelj ◽  
R. Poreddy ◽  
A. Riisager ◽  
J. Ulstrup ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Electrochemical Oxidation ◽  
Aromatic Ring ◽  
Au Nanoparticle ◽  
Core Shell ◽  
Facile Synthesis ◽  
One Pot ◽  
Mild Conditions ◽  
The Core ◽  
Thin Platinum

Atomically thin platinum shells on gold nanoparticles (NPs) are synthesized in one pot under mild conditions. The core-shell NPs exhibit excellent catalysis for energy related processes such as electrochemical oxidation of biofuels, aromatic ring hydrogenation, and γ-valerolactone production.

Fabrication of a new modified gold electrode based on gold nanoparticles and nanomagnetic Fe3O4/SiO2–(CH2)3–SH core shell for electrochemical evaluation and determination of dinitramine herbicide in water

RSC Advances ◽  
2016 ◽  
Vol 6 (55) ◽  
pp. 49798-49805 ◽  
Author(s):  
Mohsen Irandoust ◽  
Maryam Haghighi
Keyword(s):  
Gold Nanoparticles ◽  
Electrochemical Oxidation ◽  
Gold Electrode ◽  
Gold Electrodes ◽  
Core Shell ◽  
Au Nps ◽  
Voltammetric Method ◽  
Electrochemical Evaluation

A novel sensitive voltammetric method is described for the determination of dinitramine based on its electrochemical oxidation on gold electrodes modified with Fe3O4@SiO2–Si–(CH2)3–SH core shell (Au/Au–NPs–S–(CH2)3–Si–SiO2@Fe3O4).

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