scholarly journals Stöber synthesis of salen-formaldehyde resin polymer- and carbon spheres with high nitrogen content and application of the corresponding Mn-containing carbon spheres as efficient electrocatalysts for the oxygen reduction reaction

RSC Advances ◽  
2020 ◽  
Vol 10 (46) ◽  
pp. 27575-27584 ◽  
Author(s):  
Tahereh Hosseinzadeh Sanatkar ◽  
Alireza Khorshidi ◽  
Rouhollah Yaghoubi ◽  
Esmail Sohouli ◽  
Jamaladin Shakeri
Keyword(s):  
Oxygen Reduction Reaction ◽  
Nitrogen Content ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Formaldehyde Resin ◽  
Carbon Spheres ◽  
High Nitrogen Content ◽  
High Nitrogen

Stöber synthesis of salen-formaldehyde resin polymer- and carbon spheres.

A cellulose dissolution and encapsulation strategy to prepare carbon nanospheres with ultra-small size and high nitrogen content for the oxygen reduction reaction

2020 ◽  
Vol 44 (25) ◽  
pp. 10613-10620 ◽  
Author(s):  
Fuping Zhang ◽  
Liu Liu ◽  
Long Chen ◽  
Yulin Shi
Keyword(s):  
Oxygen Reduction Reaction ◽  
Nitrogen Content ◽  
Oxygen Reduction ◽  
Microcrystalline Cellulose ◽  
Reduction Reaction ◽  
Cellulose Dissolution ◽  
High Nitrogen Content ◽  
High Nitrogen ◽  
Carbon Nanospheres ◽  
Small N

Space-confined pyrolysis of microcrystalline cellulose (MCC) to prepare ultra-small N-doped carbon nanospheres (NCNs) with high nitrogen content and superior ORR performance.

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.

scholarly journals Iron, Nitrogen Co‐Doped Carbon Spheres as Low Cost, Scalable Electrocatalysts for the Oxygen Reduction Reaction

2021 ◽  
pp. 2102974
Author(s):  
Jingyu Feng ◽  
Rongsheng Cai ◽  
Emanuele Magliocca ◽  
Hui Luo ◽  
Luke Higgins ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Low Cost ◽  
Reduction Reaction ◽  
Carbon Spheres ◽  
Co Doped

Ultrafine Pt–Ni nanoparticles in hollow porous carbon spheres for remarkable oxygen reduction reaction catalysis

2021 ◽  
Author(s):  
Xian-Kai Wan ◽  
Gabor Samjeské ◽  
Hirosuke Matsui ◽  
Chaoqi Chen ◽  
Satoshi Muratsugu ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Porous Carbon ◽  
Reduction Reaction ◽  
Ni Nanoparticles ◽  
Carbon Spheres ◽  
Oxygen Reduction Reaction Activity ◽  
Porous Carbon Spheres

Small-sized Pt–Ni nanoparticles were synthesized into hollow porous carbon spheres (HPCS) under molecule assistance. Pt–Ni nanoparticle/HPCS prepared in presence of 2,2′-Dipyridylamine showed excellent oxygen reduction reaction activity/durability.

scholarly journals Cage-confinement of gas-phase ferrocene in zeolitic imidazolate frameworks to synthesize high-loading and atomically dispersed Fe–N codoped carbon for efficient oxygen reduction reaction

2019 ◽  
Vol 7 (27) ◽  
pp. 16508-16515 ◽  
Author(s):  
Guanying Ye ◽  
Qian He ◽  
Suqin Liu ◽  
Kuangmin Zhao ◽  
Yuke Su ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Nitrogen Content ◽  
Oxygen Reduction ◽  
Gas Phase ◽  
Catalytic Performance ◽  
Reduction Reaction ◽  
Iron Loading ◽  
Zeolitic Imidazolate Frameworks ◽  
High Iron ◽  
Excellent Catalytic Performance

Atomically dispersed iron doped-MOF-derived carbon with high iron loading and nitrogen content for the oxygen reduction reaction via a cage-confinement strategy shows excellent catalytic performance.

Sepia-Derived N, P Co-doped Porous Carbon Spheres as Oxygen Reduction Reaction Electrocatalyst and Supercapacitor

2018 ◽  
Vol 6 (12) ◽  
pp. 16032-16038 ◽  
Author(s):  
Guangyuan Ren ◽  
Yunan Li ◽  
Quanshui Chen ◽  
Yong Qian ◽  
Jugong Zheng ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Porous Carbon ◽  
Reduction Reaction ◽  
Carbon Spheres ◽  
Porous Carbon Spheres ◽  
Co Doped
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