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Indian Journal of Chemical Technology (IJCT) >
IJCT Vol.19 [2012] >
IJCT Vol.19(1) [January 2012] >
| Title: | Catechol encapsulated surfactant film modified glassy carbon electrode to detect thiourea at 10-7 M level |
| Authors: | Bhattacharjya, Rimki
Das, Diganta Kumar |
| Keywords: | Catechol
Cetyltrimethylammonium Bromide
Cyclic Voltammetry
Glassy Carbon Electrode
Sodium Dodecylsulphate
Thiourea |
| Issue Date: | Jan-2012 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | Glassy carbon electrode surface has been modified with catechol
encapsulated in cetyltrimethylammonium bromide (CTAB) or sodium dodecylsulphate
(SDS) surfactant film. The modified electrodes show quasi reversible cyclic
voltammograms in tris buffer at pH
7.0 with redox potential values + 0.250 V and + 0.185 V respectively, using Ag-AgCl
(3M NaCl) as reference. Addition of thiourea into the electrolytic medium
increases the cathodic and anodic currents of the modified electrodes. Anodic
current of CTAB film modified electrode is increased by 18 times while cathodic
current increased by 1.8 times. However, SDS film modified electrode shows an
increase in anodic current by 5.5 times and that in cathodic current by 8.0
times at 3×10-7 M concentration of thiourea compared to that at zero
thiourea concentration in electrolytic medium. |
| Page(s): | 52-55 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-0991 (Online); 0971-457X (Print) |
| Source: | IJCT Vol.19(1) [January 2012]
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