Oxidized carbon nanotubes as an efficient metal-free electrocatalyst for the oxygen reduction reaction

RSC Advances ◽  
2015 ◽  
Vol 5 (52) ◽  
pp. 41901-41904 ◽  
Author(s):  
Xin Wang ◽  
Canbin Ouyang ◽  
Shuo Dou ◽  
Dongdong Liu ◽  
Shuangyin Wang
Keyword(s):  
Carbon Nanotubes ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Functional Groups ◽  
Reduction Reaction ◽  
Metal Free ◽  
Oxidized Carbon ◽  
Oxidized Carbon Nanotubes ◽  
Orr Activity

Acid treated method can efficiently incorporate a large number of oxygen containing functional groups including –OH, –COOH, CO which play a key role in the enhancement of ORR activity.

Bifunctionality of the pyrone functional group in oxidized carbon nanotubes towards oxygen reduction reaction

2017 ◽  
Vol 7 (9) ◽  
pp. 1868-1879 ◽  
Author(s):  
I. M. Rocha ◽  
O. S. G. P. Soares ◽  
J. L. Figueiredo ◽  
C. Freire ◽  
M. F. R. Pereira
Keyword(s):  
Carbon Nanotubes ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Functional Group ◽  
Reduction Reaction ◽  
Controlled Treatment ◽  
Different Temperatures ◽  
Oxidized Carbon ◽  
Oxidized Carbon Nanotubes

Oxidised carbon nanotubes were subjected to a controlled treatment at different temperatures under nitrogen.

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.

Boron-Doped Carbon Nanotubes as Metal-Free Electrocatalysts for the Oxygen Reduction Reaction

2011 ◽  
Vol 123 (31) ◽  
pp. 7270-7273 ◽  
Author(s):  
Lijun Yang ◽  
Shujuan Jiang ◽  
Yu Zhao ◽  
Lei Zhu ◽  
Sheng Chen ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Metal Free ◽  
Boron Doped

Synthesis of nano-TaOx oxygen reduction reaction catalysts on multi-walled carbon nanotubes connected via a decomposition of oxy-tantalum phthalocyanine

2015 ◽  
Vol 17 (12) ◽  
pp. 7643-7647 ◽  
Author(s):  
A. Ishihara ◽  
M. Chisaka ◽  
Y. Ohgi ◽  
K. Matsuzawa ◽  
S. Mitsushima ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Thermal Decomposition ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Acidic Media ◽  
Multi Walled Carbon Nanotubes ◽  
Orr Activity ◽  
Walled Carbon Nanotubes

Nano-TaOx particles were supported on MWCNTs via a thermal decomposition of oxy-tantalum phthalocyanine. The ORR activity solely-originated from nano-TaOx was above 0.9 V versus RHE with larger currents than conventional micro-TaOx in acidic media.

Fast prediction of oxygen reduction reaction activity on carbon nanotubes with a localized geometric descriptor

2020 ◽  
Vol 22 (2) ◽  
pp. 890-895 ◽  
Author(s):  
Kunran Yang ◽  
Jeremie Zaffran ◽  
Bo Yang
Keyword(s):  
Carbon Nanotubes ◽  
Structural Optimization ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Oxygen Reduction Reaction Activity ◽  
Orr Activity ◽  
Fast Prediction

By using the pyramidalization angle as a localized geometric descriptor for oxygen reduction reaction (ORR) activity of carbon nanotubes (CNTs), we show the ORR activity of these systems can be readily predicted with mere structural optimization of CNTs.

Nonporous MOF-derived dopant-free mesoporous carbon as an efficient metal-free electrocatalyst for the oxygen reduction reaction

2016 ◽  
Vol 4 (24) ◽  
pp. 9370-9374 ◽  
Author(s):  
Xin Wang ◽  
Xingyue Li ◽  
Canbin Ouyang ◽  
Zhen Li ◽  
Shuo Dou ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Specific Surface ◽  
Oxygen Reduction ◽  
Mesoporous Carbon ◽  
Mesoporous Structure ◽  
Reduction Reaction ◽  
High Specific Surface Area ◽  
Metal Free ◽  
Electrocatalytic Oxygen Reduction ◽  
Orr Activity

Dopant-/metal-free mesoporous carbon has been prepared from nonporous MOFs, which is highly efficient for the electrocatalytic oxygen reduction reaction (ORR). The excellent ORR activity is attributed to both high specific surface area and mesoporous structure.

Boron-Doped Carbon Nanotubes as Metal-Free Electrocatalysts for the Oxygen Reduction Reaction

2011 ◽  
Vol 50 (31) ◽  
pp. 7132-7135 ◽  
Author(s):  
Lijun Yang ◽  
Shujuan Jiang ◽  
Yu Zhao ◽  
Lei Zhu ◽  
Sheng Chen ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Metal Free ◽  
Boron Doped

Tuning nondoped carbon nanotubes to an efficient metal-free electrocatalyst for oxygen reduction reaction by localizing the orbital of the nanotubes with topological defects

Nanoscale ◽  
2014 ◽  
Vol 6 (23) ◽  
pp. 14262-14269 ◽  
Author(s):  
Shujuan Jiang ◽  
Zhe Li ◽  
Huayu Wang ◽  
Yun Wang ◽  
Lina Meng ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Electrocatalytic Activity ◽  
Topological Defects ◽  
Reduction Reaction ◽  
Metal Free

Nondoped CNTs were tuned to be an efficient ORR electrocatalyst by introducing topological defects to localize the orbital of CNTs, which enables the enhancement of O2 chemisorption and the electrocatalytic activity.

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