Synthesis of FeCo nanocrystals encapsulated in nitrogen-doped graphene layers for use as highly efficient catalysts for reduction reactions

Nanoscale ◽  
2015 ◽  
Vol 7 (2) ◽  
pp. 450-454 ◽  
Author(s):  
Lin Hu ◽  
Ruirui Zhang ◽  
Lingzhi Wei ◽  
Fapei Zhang ◽  
Qianwang Chen

A facile strategy to fabricate FeCo nanocrystals with nitrogen-doped graphene shells has been designed, which involves one-step thermal decomposition of Prussian blue analogue (PBA) Fe3[Co(CN)6]2spheres.

2016 ◽  
Vol 4 (23) ◽  
pp. 9204-9212 ◽  
Author(s):  
Jianwei Su ◽  
Guoliang Xia ◽  
Ran Li ◽  
Yang Yang ◽  
Jitang Chen ◽  
...  

Unique nano heterojunction structures encapsulated in highly nitrogen doped graphene layers were synthesized in situ by one-step annealing of PBAs serve as bi-functional ORR and OER catalysts.


2016 ◽  
Vol 4 (38) ◽  
pp. 14567-14571 ◽  
Author(s):  
Fujian Liu ◽  
Kuan Huang ◽  
Shunmin Ding ◽  
Sheng Dai

One-step carbonization to synthesize nitrogen-doped meso-macroporous graphene as a highly efficient adsorbent for CO2 capture.


Engineering ◽  
2020 ◽  
Vol 6 (6) ◽  
pp. 680-687 ◽  
Author(s):  
Zhiyong Wang ◽  
Zhijian Zhao ◽  
Jesse Baucom ◽  
Dan Wang ◽  
Liming Dai ◽  
...  

Materials ◽  
2019 ◽  
Vol 12 (4) ◽  
pp. 666 ◽  
Author(s):  
Florent Bourquard ◽  
Yannick Bleu ◽  
Anne-Sophie Loir ◽  
Borja Caja-Munoz ◽  
José Avila ◽  
...  

Graphene-based materials are widely studied to enable significant improvements in electroanalytical devices requiring new generations of robust, sensitive and low-cost electrodes. In this paper, we present a direct one-step route to synthetize a functional nitrogen-doped graphene film onto a Ni-covered silicon electrode substrate heated at high temperature, by pulsed laser deposition of carbon in the presence of a surrounding nitrogen atmosphere, with no post-deposition transfer of the film. With the ferrocene methanol system, the functionalized electrode exhibits excellent reversibility, close to the theoretical value of 59 mV, and very high sensitivity to hydrogen peroxide oxidation. Our electroanalytical results were correlated with the composition and nanoarchitecture of the N-doped graphene film containing 1.75 at % of nitrogen and identified as a few-layer defected and textured graphene film containing a balanced mixture of graphitic-N and pyrrolic-N chemical functions. The absence of nitrogen dopant in the graphene film considerably degraded some electroanalytical performances. Heat treatment extended beyond the high temperature graphene synthesis did not significantly improve any of the performances. This work contributes to a better understanding of the electrochemical mechanisms of doped graphene-based electrodes obtained by a direct and controlled synthesis process.


Nanoscale ◽  
2019 ◽  
Vol 11 (26) ◽  
pp. 12563-12572 ◽  
Author(s):  
Yue Wang ◽  
Kaiyue Li ◽  
Feng Yan ◽  
Chunyan Li ◽  
Chunling Zhu ◽  
...  

A strategy through integrating Mo2C-embedded N-doped carbon with Co encapsulated in N-doped graphene layers for multifunctional catalysts is presented.


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