CTAB-Promoted Prussian Blue-Modified Electrode and Its Cation Transport Characteristics for K+, Na+, Li+, and NH4 + Ions
IR@CECRI: CSIR-Central Electrochemical Research Institute, Karaikudi
View Archive Info| Field | Value | |
| Title |
CTAB-Promoted Prussian Blue-Modified Electrode and Its Cation Transport Characteristics for K+, Na+, Li+, and NH4
+ Ions
|
|
| Creator |
Vittal, R.
Kim, K.J. Gomathi, H. Yegnaraman, V. |
|
| Subject |
Electrodics and Electrocatalysis
|
|
| Description |
A Prussian blue (PB) film was deposited on a glassy carbon (GC) electrode by cyclic voltammetry in the
presence of the cationic surfactant cetyltrimethylammonium bromide (CTAB). The electrode thus formed
showed 4-fold enhancements in redox current and charge values in pure KCl electrolyte as well as greater
stability than an electrode prepared in the absence of CTAB. This improved performance of a PB + CTAB
electrode versus a PB electrode was further demonstrated using SEM, XRD, and electrochemical impedance
spectroscopy (EIS) measurements. A comparative study was undertaken on the cation transport characteristics
of PB and PB + CTAB electrodes for Na+, Li+, and NH4
+ ions. We obtained a CV pattern for a CTABpromoted
PB film, which showed ideal Nernstian behavior at all scan rates from 5 to 140 mV s-1. Conditions
for the formation and preservation of these ideal and stable PB films are discussed. Possible mechanisms for
the beneficial effects of CTAB are proposed.
|
|
| Publisher |
American Chemical Society
|
|
| Date |
2008
|
|
| Type |
Article
PeerReviewed |
|
| Format |
application/pdf
|
|
| Identifier |
http://cecri.csircentral.net/358/1/107-2008.pdf
Vittal, R. and Kim, K.J. and Gomathi, H. and Yegnaraman, V. (2008) CTAB-Promoted Prussian Blue-Modified Electrode and Its Cation Transport Characteristics for K+, Na+, Li+, and NH4 + Ions. Journal of Physical Chemistry B, 112 (4). pp. 1149-1156. ISSN 1520-6106 |
|
| Relation |
http://cecri.csircentral.net/358/
|
|