Cobalt Vanadium Oxide Supported on Reduced Graphene Oxide for the Oxidation of Styrene Derivatives to Aldehydes with Hydrogen Peroxide as Oxidant

Synlett ◽  
2018 ◽  
Vol 29 (16) ◽  
pp. 2181-2184 ◽  
Author(s):  
Xinhua Peng ◽  
Hui Zou ◽  
Chuanfeng Hu ◽  
Kaihao Chen ◽  
Guansheng Xiao
Keyword(s):  
Hydrogen Peroxide ◽  
Graphene Oxide ◽  
Vanadium Oxide ◽  
Reduced Graphene Oxide ◽  
Excellent Performance ◽  
Environmental Friendliness ◽  
Heterogeneous Catalytic ◽  
Heterogeneous Catalytic System ◽  
Reduced Graphene ◽  
Styrene Derivatives

Cobalt vanadium oxide supported on reduced graphene oxide showed excellent performance in the oxidation of styrene derivatives to the corresponding aldehydes with hydrogen peroxide as oxidant. An electron-donating group at the para-position of the aromatic ring facilitates the formation of the corresponding aldehyde. Compared with conventional methods, the newly designed heterogeneous catalytic system offers a promising prospect because of its economic applicability and environmental friendliness.

scholarly journals Palladium-Nickel Electrocatalysts on Nitrogen-Doped Reduced Graphene Oxide Nanosheets for Direct Hydrazine/Hydrogen Peroxide Fuel Cells

Catalysts ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1372
Author(s):  
Mir Ghasem Hosseini ◽  
Vahid Daneshvari-Esfahlan ◽  
Hossein Aghajani ◽  
Sigrid Wolf ◽  
Viktor Hacker
Keyword(s):  
Hydrogen Peroxide ◽  
Graphene Oxide ◽  
Fuel Cells ◽  
Reduced Graphene Oxide ◽  
Bimetallic Catalyst ◽  
Catalyst Activity ◽  
Open Circuit ◽  
Nitrogen Doped ◽  
Hydrazine Oxidation ◽  
Reduced Graphene

In the present work, nitrogen-doped reduced graphene oxide-supported (NrGO) bimetallic Pd–Ni nanoparticles (NPs), fabricated by means of the electrochemical reduction method, are investigated as an anode electrocatalyst in direct hydrazine–hydrogen peroxide fuel cells (DHzHPFCs). The surface and structural characterization of the synthesized catalyst affirm the uniform deposition of NPs on the distorted NrGO. The electrochemical studies indicate that the hydrazine oxidation current density on Pd–Ni/NrGO is 1.81 times higher than that of Pd/NrGO. The onset potential of hydrazine oxidation on the bimetallic catalyst is also slightly more negative, i.e., the catalyst activity and stability are improved by Ni incorporation into the Pd network. Moreover, the Pd–Ni/NrGO catalyst has a large electrochemical surface area, a low activation energy value and a low resistance of charge transfer. Finally, a systematic investigation of DHzHPFC with Pd–Ni/NrGO as an anode and Pt/C as a cathode is performed; the open circuit voltage of 1.80 V and a supreme power density of 216.71 mW cm−2 is obtained for the synthesized catalyst at 60 °C. These results show that the Pd–Ni/NrGO nanocatalyst has great potential to serve as an effective and stable catalyst with low Pd content for application in DHzHPFCs.

Sign in / Sign up

Export Citation Format

Share Document