Vertically oriented reduced graphene oxide supported dealloyed palladium–copper nanoparticles for methanol electrooxidation

2015 ◽  
Vol 278 ◽  
pp. 725-732 ◽  
Author(s):  
Liming Yang ◽  
Dafeng Yan ◽  
Chengbin Liu ◽  
Hejie Song ◽  
Yanhong Tang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Copper Nanoparticles ◽  
Methanol Electrooxidation ◽  
Reduced Graphene

Pd/MXene(Ti3C2Tx)/reduced graphene oxide hybrid catalyst for methanol electrooxidation

2019 ◽  
Vol 31 (9) ◽  
pp. 09LT01 ◽  
Author(s):  
Peng Zhang ◽  
Chanchan Fan ◽  
Ranran Wang ◽  
Chenxi Xu ◽  
Jigui Cheng ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Methanol Electrooxidation ◽  
Hybrid Catalyst ◽  
Reduced Graphene

scholarly journals Electrocatalysis of Ethanol and Methanol Electrooxidation by Composite Electrodes with NiOOH/FeOOH Supported on Reduced Graphene Oxide onto Composite Electrodes

2020 ◽  
Vol 2 (1) ◽  
pp. 2
Author(s):  
João Pedro Jenson de Oliveira ◽  
Acelino Cardoso de Sá ◽  
Leonardo Lataro Paim
Keyword(s):  
Cyclic Voltammetry ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Alkaline Medium ◽  
Methanol Electrooxidation ◽  
Potential Range ◽  
Composite Electrodes ◽  
Reduced Graphene ◽  
Iron Nickel ◽  
Nickel Oxyhydroxide

This paper presents graphite/paraffin composite electrodes modified with microparticles of nickel (Ni) and Ni-Fe alloy anchored in reduced graphene oxide (rGO); these electrodes were made by electrosynthesis. Firstly, the electrodeposition of reduced graphene oxide was made by cyclic voltammetry (CV) onto the graphite/paraffin electrodes’ surface. After electrodeposition of the rGO, iron and nickel were electrodeposited by CV with successive scans. Finally, the formation of iron-nickel oxyhydroxide on the electrode surface was performed by cyclic voltammetry in alkaline medium. The composites were investigated by field emission gun scanning electron microscopy (FEG-SEM); it was observed that the Ni microparticles had spherical shapes, while the Ni-Fe alloy did not present a defined shape. The composite electrodes were used to analysis ethanol and methanol electrooxidation in an alkaline medium of 0.10 mol L−1 of NaOH in a potential range of from −0.20 to 1.0 V (vs. Ag/AgCl) at 50 mV s−1 by CV. The electrodes were able to make the electrooxidation of ethanol at a potential of around 0.57 V for the electrode constituted by the Ni-Fe alloy and around 0.61 V for the electrode modified with Ni, and for methanol in a potential around 0.57 V for the Ni-Fe alloy and around 0.66 V for the Ni electrode. The Ni-Fe alloy electrodes showed the electrocatalysis of the alcohols in relation to Ni electrodes.

Sign in / Sign up

Export Citation Format

Share Document