Electrocatalytic oxidation and determination of estradiol using an electrode modified with carbon nanotubes and an ionic liquid

A review on electrodes modified with ionic liquids

“…As for ILCPEs research on IL-CNTs is oriented towards sensing applications [26,32,[285][286][287][288][289][290][291][292][293][294][295][296][297][298][299], enzymes as microperoxidase (MP-11) [25], horseradish peroxidase [25,282,300], hemoglobin [282,301], myoglobin [300], cytochrome c [300] and laccase [28] were immobilized on IL-CNT gel electrodes and their direct electrochemistry and bioelectrocatalytic O 2 and/or H 2 O 2 reduction was reported. It has to be emphasized that rather difficult to obtain direct voltammetry glucose oxidase is possible with these electrodes.…”

Simultaneous determination of environmental estrogens: Diethylstilbestrol and estradiol using Cu-BTC frameworks-sensitized electrode

“…Although different electrochemical methods have been developed for the individual determination of DES [5][6][7] and E2 [8][9][10][11], the studies regarding the simultaneous determination of DES and E2 are very rare [12]. More importantly, the sensitivity of the reported electrochemical methods is relatively low.…”

Tyrosinase biosensor based on a glassy carbon electrode modified with multi-walled carbon nanotubes and 1-butyl-3-methylimidazolium chloride within a dihexadecylphosphate film

“…The combination of MWCNT and IL increased the electroactive surface area by a factor of 2.3 compared to the GCE. This increase can be attributed to the unfolding of MWCNT promoted by IL through 'cation-π' interactions between the imidazolium cation of the IL and the π-electrons of the MWCNT surface, increasing the number of exposed MWCNT electroactive sites[25][26][27].The influence of IL concentration from 3.0 to 10 mg mL −1 in the film, at a fixed amount of MWCNT in DHP 1.0 mg mL −1 , on the analytical signal was also investigated. For this purpose, a 1.0 × 10 −3 mol L −1 [Fe(CN) 6 ] 4− in 0.1 mol L −1 KCl solution and potential scan rate of 100 mV s −1 were used.…”