Electrochemical behavior of Keggin-type heteropolyanion doped composite of polyaniline and multi-walled carbon nanotubes

2015 ◽  
Vol 206 ◽  
pp. 335-337 ◽  
Author(s):  
Xiulong Xia ◽  
Dawei Fan ◽  
Baiheng An ◽  
Yanyan Cai ◽  
Qin Wei
Keyword(s):  
Carbon Nanotubes ◽  
Electrochemical Behavior ◽  
Keggin Type ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

Effect of Tartaric Acid on the Electrochemical Behavior of K3[Fe(CN)6] on the Electrodes Coated with Cyclodextrin Modified Multi-Walled Carbon Nanotubes

2013 ◽  
Vol 781-784 ◽  
pp. 346-351
Author(s):  
Hai Tao Wang ◽  
Shi Zhao Kang ◽  
Qiu Ling Yang ◽  
Jin Mu
Keyword(s):  
Carbon Nanotubes ◽  
Tartaric Acid ◽  
Electrochemical Behavior ◽  
Chiral Recognition ◽  
Electrochemical Reaction ◽  
Chiral Discrimination ◽  
Molecular Chirality ◽  
Control Step ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

The effect of tartaric acid on the electrochemical behavior of K3[Fe(CN)6] was investigated on bare ITO electrodes, electrodes coated with multi-walled carbon nanotubes possessing carboxyl groups (MWNT-COOHs), and electrodes coated with cyclodextrin modified multi-walled carbon nanotubes (MWNT-CDs), respectively. It is found that the molecular chirality of tartaric acid can hardly influence the electrochemical behavior of K3[Fe(CN)6] on bare ITO electrodes. When the electrodes coated with MWNT-COOHs are used, the effect of the molecular chirality becomes distinguish. In the case of the electrodes coated with MWNT-CDs, the enhanced chiral discrimination between D-tartaric acid (D-TA) and L-tartaric acid (L-TA) can be observed. The control step in the electrochemical reaction of K3[Fe(CN)6] on the electrodes coated with MWNT-CDs is deduced to be different when D-TA or L-TA is introduced into the solution, respectively. Therefore, the enhanced chiral discrimination on the electrodes coated with MWNT-CDs is probably due to the change of the control step in the electrochemical reaction of K3[Fe(CN)6] caused by the chiral recognition of cyclodextrin moieties to D-TA and L-TA.

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