Improvement in electrochemical capacitance of activated carbon from scrap tires by nitric acid treatment

2014 ◽  
Vol 8 (4) ◽  
pp. 391-398 ◽  
Author(s):  
Yan Han ◽  
Ping-Ping Zhao ◽  
Xiao-Ting Dong ◽  
Cui Zhang ◽  
Shuang-Xi Liu
Keyword(s):  
Activated Carbon ◽  
Nitric Acid ◽  
Acid Treatment ◽  
Electrochemical Capacitance ◽  
Scrap Tires

Improvement in electrochemical capacitance of carbon materials by nitric acid treatment

2008 ◽  
Vol 184 (2) ◽  
pp. 668-674 ◽  
Author(s):  
X.L. Chen ◽  
W.S. Li ◽  
C.L. Tan ◽  
W. Li ◽  
Y.Z. Wu
Keyword(s):  
Nitric Acid ◽  
Acid Treatment ◽  
Carbon Materials ◽  
Electrochemical Capacitance

A Study of Surface Modification on Adsorption Behaviors of Nanoporous Carbon

2007 ◽  
Vol 119 ◽  
pp. 211-214 ◽  
Author(s):  
Byeoung Ku Kim ◽  
Young Seak Lee ◽  
Seung Kon Ryu ◽  
Byung Joo Kim ◽  
Soo Jin Park
Keyword(s):  
Nitric Acid ◽  
Functional Groups ◽  
Carbon Fibers ◽  
Acid Treatment ◽  
Surface Acidity ◽  
Activated Carbon Fibers ◽  
Adsorption Behaviors ◽  
Toxic Gases ◽  
Adsorption Amount ◽  
Polar Functional Groups

In this work, to introduce polar functional groups on carbon surfaces, activated carbon fibers (ACFs) were treated by nitric acid in order to enhance the adsorption capacity of propylamine which was one of toxic gases in cigarette smoke. It was found that the polar functional groups were predominantly increased up to 2.0 M of nitric acid, resulting in the increase of total surface acidity. It was found that the adsorption amount of propylamine of the modified ACFs was increased around 17% after a nitric acid treatment. From the XPS results, it was observed that propylamine was reacted with strong or weak polar (acidic) groups, such as COOH, -COO or OH existed on the ACF surfaces.

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