Efficient electrocatalytic activity for oxygen reduction reaction by phosphorus-doped graphene using supercritical fluid processing

2020 ◽  
Vol 43 (1) ◽  
Author(s):  
S Suresh Balaji ◽  
P Anandha Ganesh ◽  
Megala Moorthy ◽  
M Sathish
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Supercritical Fluid ◽  
Electrocatalytic Activity ◽  
Reduction Reaction ◽  
Doped Graphene ◽  
Phosphorus Doped ◽  
Supercritical Fluid Processing

Catalytic Activity of Silver Metal Supported on Doped Graphene in Alkaline Medium for Oxygen Reduction Reaction

2019 ◽  
Vol 1155 ◽  
pp. 55-69
Author(s):  
Nabila A. Karim ◽  
Nor Shahirah Shamsul ◽  
Siti Kartom Kamarudin
Keyword(s):  
Fuel Cell ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Adsorption Energy ◽  
Reduction Reaction ◽  
Pt Catalyst ◽  
Nitrogen And Phosphorus ◽  
Doped Graphene ◽  
Phosphorus Doped ◽  
Silver Metal

The platinum (Pt) degradation, poisoning and carbon corrosion in acidic fuel cell has led to explore the research in alkaline fuel cell. However, the high cost of Pt has brought a lot of studies to find replacement for Pt catalyst. Due to that, silver metal is selected as non-Pt catalyst and supported by the nitrogen and phosphorus-doped on graphene for oxygen reduction reaction in alkaline medium. The adsorption energy and mechanism of the oxygen reduction reaction is studied by using density functional theory (DFT) calculation. The support catalyst of graphene is doped with three atom nitrogen and phosphorus namely as N3 and P3, respectively. The Ag supported on N3 and P3 are tested on O2, OOH, O and OH species. There are two types adsorption of O2 on N3 and P3 which is side and end-on adsorption configuration. The N3-Ag has similar adsorption energy for both configurations, but P3-Ag has low adsorption energy by end-on adsorption configuration. The effect of doped atoms on graphene also have been tested on O2, OOH, O and OH species. The result shows that increasing nitrogen doping atom has decreased the adsorption energy of O2 and vice versa on phosphorus atoms. A single phosphorus doping atom on graphene has shown the lowest adsorption energy, but the end-on configuration of P3-Ag has shown most stable adsorption. The schematic free energy profile shows that both N3-Ag and P3-Ag have high possibilities to be followed in oxygen reduction reaction mechanism but P3-Ag has advantage due to stable adsorption as non-Pt catalyst. The Ag metal supported on nitrogen and phosphorus-doped graphene show promising result to be a catalyst in alkaline fuel cell.

scholarly journals (Photo)electrocatalysis of molecular oxygen reduction by S-doped graphene decorated with a star-shaped oligothiophene

Nanoscale ◽  
2019 ◽  
Vol 11 (15) ◽  
pp. 7335-7346 ◽  
Author(s):  
Anastasios Stergiou ◽  
Dimitris K. Perivoliotis ◽  
Nikos Tagmatarchis
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Molecular Oxygen ◽  
Electrocatalytic Activity ◽  
Reduction Reaction ◽  
Doped Graphene

The high (photo)electrocatalytic activity and stability towards the oxygen reduction reaction of a star-shaped oligothiophene/S-doped graphene ensemble is presented.

Easy synthesis of N-doped graphene by milling exfoliation with electrocatalytic activity towards the Oxygen Reduction Reaction (ORR)

2017 ◽  
Vol 42 (51) ◽  
pp. 30383-30388 ◽  
Author(s):  
Juan C. Carrillo-Rodríguez ◽  
Ivonne L. Alonso-Lemus ◽  
A.A. Siller-Ceniceros ◽  
E. Martínez G ◽  
Pedro Pizá-Ruiz ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Electrocatalytic Activity ◽  
Reduction Reaction ◽  
Doped Graphene

Theoretical insights on the reaction pathways for oxygen reduction reaction on phosphorus doped graphene

Carbon ◽  
2016 ◽  
Vol 105 ◽  
pp. 214-223 ◽  
Author(s):  
Xiaowan Bai ◽  
Erjun Zhao ◽  
Kai Li ◽  
Ying Wang ◽  
Menggai Jiao ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Reaction Pathways ◽  
Doped Graphene ◽  
Phosphorus Doped

scholarly journals Functional molecule guided evolution of MnOx nanostructure patterns on N-graphene and their oxygen reduction activity

RSC Advances ◽  
2019 ◽  
Vol 9 (48) ◽  
pp. 27945-27952
Author(s):  
Nibedita Behera ◽  
Swarna P. Mantry ◽  
Biswaranjan D. Mohapatra ◽  
Rajesh K. Behera ◽  
Kumar S. K. Varadwaj
Keyword(s):  
Benzoic Acid ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Electrocatalytic Activity ◽  
Reduction Reaction ◽  
Nitrogen Doped ◽  
Trimesic Acid ◽  
Reduction Activity ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene

In this work, we systematically followed the growth of MnOx nanostructures on trimesic acid (TMA)/benzoic acid (BA) functionalised nitrogen doped graphene (NG) and studied their electrocatalytic activity towards oxygen reduction reaction (ORR).

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