Co3ZnC/Co nano heterojunctions encapsulated in N-doped graphene layers derived from PBAs as highly efficient bi-functional OER and ORR electrocatalysts

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.

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 (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.


Nanoscale ◽  
2015 ◽  
Vol 7 (40) ◽  
pp. 17079-17087 ◽  
Author(s):  
Xiang Zhang ◽  
Chunsheng Shi ◽  
Enzuo Liu ◽  
Jiajun Li ◽  
Naiqin Zhao ◽  
...  

Nitrogen-doped graphene network supported graphene shell encapsulated Cu nanoparticles for surface-enhanced Raman scattering were constructed by in situ chemical vapor deposition.


Carbon ◽  
2019 ◽  
Vol 155 ◽  
pp. 410-420 ◽  
Author(s):  
Y. Bleu ◽  
V. Barnier ◽  
F. Christien ◽  
F. Bourquard ◽  
A.-S. Loir ◽  
...  

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.


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