Water-Dispersible, Sulfonated Hyperbranched Poly(ether-ketone) Grafted Multiwalled Carbon Nanotubes as Oxygen Reduction Catalysts

ACS Nano ◽  
2012 ◽  
Vol 6 (7) ◽  
pp. 6345-6355 ◽  
Author(s):  
Gyung-Joo Sohn ◽  
Hyun-Jung Choi ◽  
In-Yup Jeon ◽  
Dong Wook Chang ◽  
Liming Dai ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Oxygen Reduction ◽  
Multiwalled Carbon Nanotubes ◽  
Multiwalled Carbon ◽  
Water Dispersible ◽  
Hyperbranched Poly ◽  
Oxygen Reduction Catalysts ◽  
Ether Ketone ◽  
Reduction Catalysts

In-Situ Grafting of Hyperbranched Poly(ether ketone)s onto Multiwalled Carbon Nanotubes via the A3+ B2Approach

2007 ◽  
Vol 40 (13) ◽  
pp. 4474-4480 ◽  
Author(s):  
Ja-Young Choi ◽  
Se-Jin Oh ◽  
Hwa-Jeong Lee ◽  
David H. Wang ◽  
Loon-Seng Tan ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Multiwalled Carbon Nanotubes ◽  
Multiwalled Carbon ◽  
Hyperbranched Poly ◽  
Ether Ketone

scholarly journals Water-Dispersible Multiwalled Carbon Nanotubes Obtained from Citric-Acid-Assisted Oxygen Plasma Functionalization

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Mohammad Jellur Rahman ◽  
Tetsu Mieno
Keyword(s):  
Carbon Nanotubes ◽  
Citric Acid ◽  
Acid Solution ◽  
Multiwalled Carbon Nanotubes ◽  
Oxygen Plasma ◽  
Surface Defects ◽  
Citric Acid Solution ◽  
Multiwalled Carbon ◽  
Pure Ethanol ◽  
Water Dispersible

A new and safe method has been developed to functionalize multiwalled carbon nanotubes (MWCNTs) with fewer surface defects, which significantly increases their dispersibility in water. MWCNTs are pretreated in pure ethanol by a supersonic homogenizer. Then, the mixture is dried and soaked in weak citric acid solution. Finally, the MWCNTs in the citric acid solution are treated with radio frequency (13.56 MHz) oxygen plasma. As a result, many carboxyl functional groups are attached onto the MWCNT surfaces and stable dispersion of the MWCNTs in water is obtained. The treatment conditions are optimized in this study.

Nitrogen-doped carbon coatings on carbon nanotubes as efficient oxygen reduction catalysts

Carbon ◽  
2018 ◽  
Vol 130 ◽  
pp. 843-844 ◽  
Author(s):  
Li-xiang Li ◽  
Hong-wei Zhao ◽  
Tian-yu Xing ◽  
Xin Geng ◽  
Ren-feng Song ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Oxygen Reduction ◽  
Carbon Coatings ◽  
Nitrogen Doped ◽  
Oxygen Reduction Catalysts ◽  
Nitrogen Doped Carbon ◽  
Reduction Catalysts
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