Selective and low potential electrocatalytic oxidation and sensing of l-cysteine using metal impurity containing carbon black modified electrode

2017 ◽  
Vol 9 (48) ◽  
pp. 6791-6800 ◽  
Author(s):  
Sundaram Sornambikai ◽  
Mohammed Rafiq Abdul Kadir ◽  
Annamalai Senthil Kumar ◽  
Nagamony Ponpandian ◽  
Chinnuswamy Viswanathan
Keyword(s):  
Carbon Black ◽  
Functional Groups ◽  
Modified Electrode ◽  
Electrocatalytic Oxidation ◽  
Metal Impurity ◽  
Metal Impurities ◽  
Oxygen Functional Groups

Cartoon for the GCE/CB modified electrode preparation and its low potential electrocatalytic oxidation of l-CySH with assistance of metal impurities and oxygen functional groups.

Non-nitrogen doped and non-metal oxygen reduction electrocatalysts based on carbon nanotubes: mechanism and origin of ORR activity

2014 ◽  
Vol 7 (6) ◽  
pp. 1950-1958 ◽  
Author(s):  
Keiko Waki ◽  
Raymond A. Wong ◽  
Haryo S. Oktaviano ◽  
Takuya Fujio ◽  
Takuro Nagai ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
High Temperature ◽  
Oxygen Reduction ◽  
Functional Groups ◽  
Topological Defects ◽  
Nitrogen Doped ◽  
Metal Impurities ◽  
Oxygen Functional Groups ◽  
Orr Activity ◽  
The Creation

The proposed origin of the improved ORR activity is unlikely to be from residual metal impurities but from the creation of topological defects caused by the removal of high temperature CO desorbing oxygen functional groups.

scholarly journals Electrochemical Evaluation of Surface Modified Free-Standing CNT Electrode for Li–O2 Battery Cathode

Energies ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 4196
Author(s):  
Ji Hyeon Lee ◽  
Hyun Wook Jung ◽  
In Soo Kim ◽  
Min Park ◽  
Hyung-Seok Kim
Keyword(s):  
Functional Groups ◽  
Atomic Layer ◽  
Free Standing ◽  
Coating Technology ◽  
Oxygen Functional Groups ◽  
Layer Deposition ◽  
Discharge Product ◽  
Effect Of Oxygen ◽  
Surface Modified ◽  
Electrochemical Evaluation

In this study, carbon nanotubes (CNTs) were used as cathodes for lithium–oxygen (Li–O2) batteries to confirm the effect of oxygen functional groups present on the CNT surface on Li–O2 battery performance. A coating technology using atomic layer deposition was introduced to remove the oxygen functional groups present on the CNT surface, and ZnO without catalytic properties was adopted as a coating material to exclude the effect of catalytic reaction. An acid treatment process (H2SO4:HNO3 = 3:1) was conducted to increase the oxygen functional groups of the existing CNTs. Therefore, it was confirmed that ZnO@CNT with reduced oxygen functional groups lowered the charging overpotential by approximately 230 mV and increased the yield of Li2O2, a discharge product, by approximately 13%. Hence, we can conclude that the ZnO@CNT is suitable as a cathode material for Li–O2 batteries.

Radiotracer Studies of Carbon Black Surface Interactions with Organic Systems. I. Experimental Approach and Initial Results from Chemisorption and Vinyl Polymerization Studies

1968 ◽  
Vol 41 (2) ◽  
pp. 382-399 ◽  
Author(s):  
Marvin L. Deviney ◽  
Lawrence E. Whittington
Keyword(s):  
Carbon Black ◽  
Functional Groups ◽  
Reaction Mechanisms ◽  
Hydrogen Abstraction ◽  
Surface Interactions ◽  
Carbon Surface ◽  
Organic Systems ◽  
Carbon Black Surface ◽  
Basic Reaction ◽  
Black Surface

Abstract Radiotracer techniques have been applied to the study of interactions of carbon black surface functional groups with two chosen organic systems. The basic reaction mechanisms demonstrated in this study may have implications in elastomer reinforcement. Direct radiochemical evidence supports the conclusions of Hallum and Drushel (based on less direct polarographic data) that surface quinonic groups exhibit hydrogen abstraction activity toward tertiary hydrogens in paraffinic hydrocarbons. Studies on the system carbon black and styrene using tritium radiotracer have provided direct evidence that phenolic hydrogens participate in the polymerization acceleration and graft polymer formation reaction and are transferred to the growing polystyrene chains as postulated by Donnet. Several methods have been developed for specifically labelling certain oxygenated functional groups on the carbon surface with tritium and for tritium labelling carbon black in aromatic hydrogen positions. The techniques developed in this work and the basic reaction mechanisms derived will permit this investigation to be extended into a radiochemical study of carbon black surface interactions with elastomer related systems of interest to the rubber industry.

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