Electrochemical studies of U(VI)/U(IV) redox reaction in 1M H2SO4 at single-walled carbon nanotubes (SWCNTs) modified gold (Au) electrode
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Ruma Gupta
Abstract
Electrochemistry of U(VI)/U(IV) couple in 1 M H2SO4 was studied on bare and SWCNT modified gold (Au) electrodes by cyclic voltammetry (CV), differential pulse voltammetry (DPV) and electrochemical impedance spectroscopy (EIS). The gold electrode modified with single-walled carbon nanotubes (SWCNTs-Au) was characterized by scanning electron microscopy (SEM). Electrocatalysis of U(VI)/U(IV) redox reaction was observed on SWCNT-Au. The lower charge transfer resistance at SWCNT-Au promoted the rate of electron transfer reaction of U(VI)/U(IV) couple. These results are interesting to develop electroanalytical methodologies for uranium determination using SWCNT modified electrodes. To the best of our knowledge, this is the first study on the electrocatalysis of uranium on SWCNT modified electrode.
© by Oldenbourg Wissenschaftsverlag, München, Germany
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Articles in the same Issue
- Electrochemical studies of U(VI)/U(IV) redox reaction in 1M H2SO4 at single-walled carbon nanotubes (SWCNTs) modified gold (Au) electrode
- 241Pu concentrations in water, plankton and fish from the southern Baltic Sea
- The influence of temperature on selenate adsorption by goethite
- Adsorption interaction of carrier-free thallium species with gold and quartz surfaces
- An electrochemical route to prepare planar 204Tl sources for the calibration of beta surface contamination monitors
- Production and separation of 97Ru and coproduced 95Tc from 12C-induced reaction on yttrium target
- The synthesis, radiolabeling and first biological evaluation of a new 166Ho-complex for radiotherapy of bone metastases
- Gamma radiolytic eradication of methoxychlor in aqueous media: the degradation pathways using HPLC and SPME-GC-MS
- Natural radioactivity in the groundwater of Wadi Nu'man, Mecca Province, Saudi Arabia
