Reduced graphene oxide supported Pd-Cu-Co trimetallic catalyst: synthesis, characterization and methanol electrooxidation properties

2019 ◽  
Vol 29 ◽  
pp. 72-78 ◽  
Author(s):  
Fan Yang ◽  
Bing Zhang ◽  
Sen Dong ◽  
Chunxia Wang ◽  
Andong Feng ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Methanol Electrooxidation ◽  
Catalyst Synthesis ◽  
Trimetallic Catalyst ◽  
Reduced Graphene ◽  
Supported Pd

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 In situ XAS study of the local structure and oxidation state evolution of palladium in a reduced graphene oxide supported Pd(ii) carbene complex during an undirected C–H acetoxylation reaction

2019 ◽  
Vol 9 (8) ◽  
pp. 2025-2031 ◽  
Author(s):  
Ning Yuan ◽  
Maitham H. Majeed ◽  
Éva G. Bajnóczi ◽  
Axel R. Persson ◽  
L. Reine Wallenberg ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Oxidation State ◽  
Local Structure ◽  
Carbene Complex ◽  
In Situ Xas ◽  
Reduced Graphene ◽  
State Evolution ◽  
Supported Pd

In situ XAS is used to reveal the evolution of palladium species during an undirected C–H acetoxylation reaction.

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.

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