Electrochemical estimation of the active site density on metal-free nitrogen-doped carbon using catechol as an adsorbate

2017 ◽  
Vol 19 (37) ◽  
pp. 25414-25422 ◽  
Author(s):  
Arup Chakraborty ◽  
Ruttala Devivaraprasad ◽  
Bapi Bera ◽  
Manoj Neergat
Keyword(s):  
Active Site ◽  
Electrochemical Method ◽  
Nitrogen Doped ◽  
Metal Free ◽  
Site Density ◽  
Nitrogen Doped Carbon

An electrochemical method to estimate the active site density of metal-free electrocatalysts using catechol adsorption.

scholarly journals Electrochemical estimation of active site density on a metal-free carbon-based catalyst

RSC Advances ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 466-475 ◽  
Author(s):  
Arup Chakraborty ◽  
Bapi Bera ◽  
Divya Priyadarshani ◽  
Pradipkumar Leuaa ◽  
Debittree Choudhury ◽  
...  
Keyword(s):  
Active Site ◽  
Free Carbon ◽  
Adsorption Method ◽  
Nitrogen Doped ◽  
Metal Free ◽  
Site Density ◽  
Nitrogen Doped Carbon ◽  
Carbon Based

Estimated ESA of nitrogen-doped carbon and carbon using AQS-adsorption method.

scholarly journals Unveiling the Active Site of Metal-Free Nitrogen-doped Carbon for Electrocatalytic Carbon Dioxide Reduction

2020 ◽  
Vol 1 (8) ◽  
pp. 100145 ◽  
Author(s):  
Zheng Zhang ◽  
Liang Yu ◽  
Yunchuan Tu ◽  
Ruixue Chen ◽  
Lihui Wu ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Active Site ◽  
Carbon Dioxide Reduction ◽  
Nitrogen Doped ◽  
Metal Free ◽  
Nitrogen Doped Carbon

scholarly journals High-performance electrocatalyst based on polyazine derived mesoporous nitrogen-doped carbon for oxygen reduction reaction

RSC Advances ◽  
2021 ◽  
Vol 11 (47) ◽  
pp. 29555-29563
Author(s):  
Songlin Zhao ◽  
Fushan Chen ◽  
Qunfeng Zhang ◽  
Lingtao Meng
Keyword(s):  
Renewable Energy ◽  
Oxygen Reduction Reaction ◽  
Porous Carbon ◽  
High Performance ◽  
Carbon Materials ◽  
Reduction Reaction ◽  
Nitrogen Doped ◽  
Metal Free ◽  
Energy Conversion Systems ◽  
Nitrogen Doped Carbon

Nitrogen-doped porous carbon materials have high potential in metal-free electrocatalysts, which is essential for several renewable energy conversion systems.

scholarly journals N8− Polynitrogen Stabilized on Nitrogen-Doped Carbon Nanotubes as an Efficient Electrocatalyst for Oxygen Reduction Reaction

Catalysts ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 864 ◽  
Author(s):  
Zhenhua Yao ◽  
Ruiyang Fan ◽  
Wangyang Ji ◽  
Tingxuan Yan ◽  
Maocong Hu
Keyword(s):  
Carbon Nanotubes ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Rotating Disk ◽  
Reduction Reaction ◽  
Rotating Disk Electrode ◽  
Nitrogen Doped ◽  
Metal Free ◽  
Temperature Programmed ◽  
Nitrogen Doped Carbon

In this work, non-traditional metal-free polynitrogen chain N8− deposited on a nitrogen-doped carbon nanotubes (PN-NCNT) catalyst was successfully synthesized by a facile cyclic voltammetry (CV) approach, which was further tested in an oxygen reduction reaction (ORR). The formation of PN on NCNT was confirmed by attenuated total reflectance–Fourier transform infrared spectroscopy (ATR-FTIR) and Raman spectroscopy. Partial positive charge of carbon within NCNT facilitated electron transfer and accordingly induced the formation of more PN species compared to CNT substrate as determined by temperature-programmed decomposition (TPD). Rotating disk electrode (RDE) measurements suggested that a higher current density was achieved over PN-NCNT than that on PN-CNT catalyst, which can be attributed to formation of the larger amount of N8− on NCNT. Kinetic study suggested a four-electron pathway mechanism over PN-NCNT. Moreover, it showed long stability and good methanol tolerance, which indicates its great potential application. This work provides insights on designing and synthesizing non-traditional metal-free catalysts for ORR in fuel cells.

Nitrogen-doped carbon nanotubes as a highly active metal-free catalyst for nitrobenzene hydrogenation

2020 ◽  
Vol 260 ◽  
pp. 118105 ◽  
Author(s):  
Wei Xiong ◽  
Zening Wang ◽  
Shilong He ◽  
Fang Hao ◽  
Yongzhe Yang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Nitrogen Doped ◽  
Metal Free ◽  
Nitrobenzene Hydrogenation ◽  
Highly Active ◽  
Active Metal ◽  
Nitrogen Doped Carbon

scholarly journals Nitrogen-doped carbon nanotubes on silicon carbide as a metal-free catalyst

2014 ◽  
Vol 35 (6) ◽  
pp. 906-913 ◽  
Author(s):  
Cuong Duong-Viet ◽  
Housseinou Ba ◽  
Yuefeng Liu ◽  
Lai Truong-Phuoc ◽  
Jean-Mario Nhut ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Silicon Carbide ◽  
Nitrogen Doped ◽  
Metal Free ◽  
Nitrogen Doped Carbon
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