2016
DOI: 10.1016/j.ijhydene.2016.10.009
|View full text |Cite
|
Sign up to set email alerts
|

Electrocatalysis of oxygen reduction on CoNi-decorated-Pt nanoparticles: A theoretical and experimental study

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
3
1

Citation Types

0
4
0

Year Published

2016
2016
2023
2023

Publication Types

Select...
8

Relationship

0
8

Authors

Journals

citations
Cited by 19 publications
(4 citation statements)
references
References 62 publications
0
4
0
Order By: Relevance
“…Thus, our first hypothesis is that the defected graphene will enhance the ability of the catalysts to accept and donate charge which will lower the activation energy for different steps in the Suzuki cross-coupling reaction in first-row transition-metal clusters such as nickel, iron, and copper. Our second hypothesis is that by changing the composition and size of the clusters, the activity may also be changed, with bimetallic clusters forming complementary active sites because of charge transfer and the size of the cluster affecting the electronic properties and reactivity. In particular, Pd/Ni clusters are interesting as they have promising applications as electrochemical catalysts, and their similar electronic structure make possible either site to be active towards cross-coupling catalysis. Thus, the goal of this paper is to use theoretical methods to see if the donor–acceptor concepts that explain the high activity of Pd clusters on defected graphene are generalizable to other systems, especially less expensive 3d transition metals such as nickel and bimetallic co-catalysts where charge transfer between the two metals may activate the catalyst.…”
Section: Introductionmentioning
confidence: 99%
“…Thus, our first hypothesis is that the defected graphene will enhance the ability of the catalysts to accept and donate charge which will lower the activation energy for different steps in the Suzuki cross-coupling reaction in first-row transition-metal clusters such as nickel, iron, and copper. Our second hypothesis is that by changing the composition and size of the clusters, the activity may also be changed, with bimetallic clusters forming complementary active sites because of charge transfer and the size of the cluster affecting the electronic properties and reactivity. In particular, Pd/Ni clusters are interesting as they have promising applications as electrochemical catalysts, and their similar electronic structure make possible either site to be active towards cross-coupling catalysis. Thus, the goal of this paper is to use theoretical methods to see if the donor–acceptor concepts that explain the high activity of Pd clusters on defected graphene are generalizable to other systems, especially less expensive 3d transition metals such as nickel and bimetallic co-catalysts where charge transfer between the two metals may activate the catalyst.…”
Section: Introductionmentioning
confidence: 99%
“…The mechanisms like Ostwald ripening or species migration have been recognized as the main mechanisms of the Pt degradation, however there is a need for the temporal observations to understand the pathways of the Pt movements under the dominant mechanisms. More studies are needed to understand the enhanced activity and stability of Pt alloy catalysts (e.g., using transition metals [181] specifically Co [182][183][184] ). The effect of contaminations on degradation mechanisms is not clear and how a contaminated (poisoned) electrolyte can alter the reaction pathway needs to be unraveled.…”
Section: • Catalystmentioning
confidence: 99%
“…One option for achieving these objectives is to reduce the Pt loading when developing catalysts made of Pt-alloys and other metals, such as Ni, Co, Fe, or other elements [3][4][5]. For example, some studies have shown that catalysts made from bimetallic alloys with Pt exhibit catalytic activity similar to, or higher than, carbon-supported Pt (Pt/C) catalysts [6][7][8]. In the last few years, different approaches for improving the catalytic activity of Pt bimetallic alloy catalysts have been developed by modifying the shapes, compositions, or sizes of the nanoparticles [9].…”
Section: Introductionmentioning
confidence: 99%