Three-dimensional hybrid aerogels built from graphene and polypyrrole-derived nitrogen-doped carbon nanotubes as a high-efficiency Pt-based catalyst support

Carbon ◽  
2017 ◽  
Vol 121 ◽  
pp. 518-526 ◽  
Author(s):  
Li-Mei Zhang ◽  
Xu-Lei Sui ◽  
Lei Zhao ◽  
Guo-Sheng Huang ◽  
Da-Ming Gu ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
High Efficiency ◽  
Catalyst Support ◽  
Three Dimensional ◽  
Nitrogen Doped ◽  
Hybrid Aerogels ◽  
Nitrogen Doped Carbon

scholarly journals Nitrogen Doped Carbon Nanotubes and Nanofibers for Green Hydrogen Production: Similarities in the Nature of Nitrogen Species, Metal–Nitrogen Interaction, and Catalytic Properties

Energies ◽  
2019 ◽  
Vol 12 (20) ◽  
pp. 3976
Author(s):  
Olga Podyacheva ◽  
Alexander Lisitsyn ◽  
Lidiya Kibis ◽  
Andrei Boronin ◽  
Olga Stonkus ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Hydrogen Production ◽  
Catalytic Properties ◽  
Catalyst Support ◽  
Nitrogen Doped ◽  
Supported Platinum ◽  
Formic Acid Decomposition ◽  
Type Interaction ◽  
Nitrogen Doped Carbon ◽  
Pyridinic Nitrogen

The effect of nitrogen doped bamboo-like carbon nanotubes (N–CNTs) on the properties of supported platinum (0.2 and 1 wt %) catalysts in formic acid decomposition for hydrogen production was studied. It was shown that both impregnation and homogeneous precipitation routes led to the formation of electron-deficient platinum stabilized by pyridinic nitrogen sites of the N–CNTs. The electron-deficient platinum species strongly enhanced the activity and selectivity of the Pt/N–CNTs catalysts when compared to the catalysts containing mainly metallic platinum nanoparticles. A comparison of bamboo-like N–CNTs and herring-bone nitrogen doped carbon nanofibers (N–CNFs) as the catalyst support allowed us to conclude that the catalytic properties of supported platinum are determined by its locally one-type interaction with pyridinic nitrogen sites of the N–CNTs or N–CNFs irrespective of substantial structural differences between nanotubes and nanofibers.

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