Electrochemical investigations of Pu(IV)/Pu(III) redox reaction using graphene modified glassy carbon electrodes and a comparison to the performance of SWCNTs modified glassy carbon electrodes

2016 ◽  
Vol 191 ◽  
pp. 530-535 ◽  
Author(s):  
Ruma Gupta ◽  
Jayashree Gamare ◽  
Manoj K. Sharma ◽  
J.V. Kamat
2016 ◽  
Vol 6 (1) ◽  
pp. 37 ◽  
Author(s):  
Katja Magdić ◽  
Višnja Horvat-Radošević ◽  
Krešimir Kvastek

<p class="PaperAbstract"><span lang="EN-GB">Different types of charge storage mechanisms at unmodified graphite vs. glassy carbon electrodes in acid sulphate supporting solution containing potassium hexacyanoferrate (II) redox active electrolyte, have been revealed by electrochemical impedance spectroscopy and supported by cyclic voltammetry experiments. Reversible charge transfer of Fe(CN)6<sup>3-/4-</sup> redox reaction detected by assessment of CVs of glassy carbon electrode, is in impedance spectra indicated by presence of bulk diffusion impedance and constant double-layer/pseudocapacitive electrode impedance compared to that measured in the pure supporting electrolyte. Some surface retention of redox species detected by assessment of CVs of graphite electrode is in impedance spectra indicated by diffusion impedance coupled in this case by diminishing of double-layer/pseudo­capacitive impedance compared to that measured in the pure supporting electrolyte. This phenomenon is ascribed to contribution of additional pseudocapacitive impedance generated by redox reaction of species confined at the electrode surface.</span></p>


2021 ◽  
Vol 379 ◽  
pp. 138181
Author(s):  
Shota Ito ◽  
Masatoshi Sugimasa ◽  
Yuichi Toshimitsu ◽  
Akihiro Orita ◽  
Masaki Kitagawa ◽  
...  

2021 ◽  
Author(s):  
Yan Jin ◽  
Tong QI ◽  
Yuqing Ge ◽  
Jin Chen ◽  
Li juan Liang ◽  
...  

In this paper, ultrasensitive electrochemical determination of phosphate in water is achieved by hydrophilic TiO2 modified glassy carbon electrodes for the first time. Differential pulse voltammetry (DPV) method is proposed...


1992 ◽  
Vol 324 (1-2) ◽  
pp. 145-159 ◽  
Author(s):  
Paolo Ugo ◽  
Barbara Ballarin ◽  
Salvatore Daniele ◽  
G.Antonio Mazzocchin

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