N-Doping of graphene oxide at low temperature for the oxygen reduction reaction

2017 ◽  
Vol 53 (5) ◽  
pp. 873-876 ◽  
Author(s):  
Hengcong Tao ◽  
Chao Yan ◽  
Alex W. Robertson ◽  
Yunnan Gao ◽  
Jingjing Ding ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Low Temperature ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Nitrogen Doping ◽  
Ammonia Solution ◽  
Reduction Reaction ◽  
N Doping ◽  
First Time

Nitrogen doping of graphene oxide was demonstrated for the first time at 5 °C in ammonia solution via ultrasonication.

scholarly journals Synthesis of amorphous and graphitized porous nitrogen-doped carbon spheres as oxygen reduction reaction catalysts

2020 ◽  
Vol 11 ◽  
pp. 1-15 ◽  
Author(s):  
Maximilian Wassner ◽  
Markus Eckardt ◽  
Andreas Reyer ◽  
Thomas Diemant ◽  
Michael S Elsaesser ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Nitrogen Content ◽  
Oxygen Reduction ◽  
Nitrogen Doping ◽  
Reduction Reaction ◽  
Model Systems ◽  
Carbon Sphere ◽  
Carbon Spheres ◽  
Nitrogen Doped ◽  
N Doping

Amorphous and graphitized nitrogen-doped (N-doped) carbon spheres are investigated as structurally well-defined model systems to gain a deeper understanding of the relationship between synthesis, structure, and their activity in the oxygen reduction reaction (ORR). N-doped carbon spheres were synthesized by hydrothermal treatment of a glucose solution yielding carbon spheres with sizes of 330 ± 50 nm, followed by nitrogen doping via heat treatment in ammonia atmosphere. The influence of a) varying the nitrogen doping temperature (550–1000 °C) and b) of a catalytic graphitization prior to nitrogen doping on the carbon sphere morphology, structure, elemental composition, N bonding configuration as well as porosity is investigated in detail. For the N-doped carbon spheres, the maximum nitrogen content was found at a doping temperature of 700 °C, with a decrease of the N content for higher temperatures. The overall nitrogen content of the graphitized N-doped carbon spheres is lower than that of the amorphous carbon spheres, however, also the microporosity decreases strongly with graphitization. Comparison with the electrocatalytic behavior in the ORR shows that in addition to the N-doping, the microporosity of the materials is critical for an efficient ORR.

Creation of oxygen reduction reaction active sites on titanium oxynitride without increasing the nitrogen doping level

2018 ◽  
Vol 20 (23) ◽  
pp. 15613-15617 ◽  
Author(s):  
Mitsuharu Chisaka
Keyword(s):  
Low Temperature ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Doping Level ◽  
Active Sites ◽  
Nitrogen Doping ◽  
Reduction Reaction ◽  
Low Temperature Annealing

Active sites were created on ORR-active titanium oxynitride by low-temperature annealing without changing the nitrogen doping level to determine their origin.

Boosting graphene electrocatalytic efficiency in oxygen reduction reaction by mechanochemically induced low-temperature nitrogen doping

2021 ◽  
pp. 139410
Author(s):  
Oleg Yu Posudievsky ◽  
Andrey S. Kondratyuk ◽  
Olga A. Kozarenko ◽  
Vsevolod V. Cherepanov ◽  
Volodymyr L. Karbivskiy ◽  
...  
Keyword(s):  
Low Temperature ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Nitrogen Doping ◽  
Reduction Reaction

Nitrogen/sulfur dual-doped reduced graphene oxide supported CuFeS2 as an efficient electrocatalyst for the oxygen reduction reaction

2018 ◽  
Vol 42 (3) ◽  
pp. 2081-2088 ◽  
Author(s):  
Man Zhang ◽  
Wei Hong ◽  
Ruinan Xue ◽  
Lingzhi Li ◽  
Guanbo Huang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Fuel Cells ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduced Graphene Oxide ◽  
Low Cost ◽  
Reduction Reaction ◽  
Reduced Graphene

At present, low-cost and efficient electrocatalysts for accelerating the oxygen reduction reaction in fuel cells are highly desired.

Synthesis and Characterization of Nitrogen Doped Reduced Graphene Oxide Based Cobalt-ZIF-8 Catalysts for Oxygen Reduction Reaction

2021 ◽  
Vol MA2021-02 (36) ◽  
pp. 1024-1024
Author(s):  
Hassan Shirzadi Jahromi ◽  
Shivi Saxena ◽  
Sudharsan Sridhar ◽  
Muralidhar K Ghantasala ◽  
Ramakrishna Guda ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduced Graphene Oxide ◽  
Reduction Reaction ◽  
Synthesis And Characterization ◽  
Nitrogen Doped ◽  
Reduced Graphene
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