Electrode modified with nanoporous silicate submicrometre particles with appended ionic liquid

Leśniewski, Adam; Niedziółka‐Jönsson, Joanna; Sirieix-Plénet, Juliette; Gaillon, Laurent; Opałło, Marcin

doi:10.1016/j.elecom.2009.04.034

Cited by 10 publications

(8 citation statements)

References 33 publications

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“…Typically, organic polymer microparticles require other polymer matrix (for example Nafion [313]) matrix for stable immobilization. This is also possible in the absence polymeric scaffold film as shown for imidazolium-appended silicate submicroparticles deposited on ITO surface by dropping methanol suspension [314]. Due to their imidazolium functional groups, this electrode acts as a reversible sponge for electroactive anions.…”

Section: Electrodes Modified With Appended Ionic Liquidsmentioning

confidence: 97%

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A review on electrodes modified with ionic liquids

Opałło

Leśniewski

2011

Journal of Electroanalytical Chemistry

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339

171

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Section: Electrodes Modified With Appended Ionic Liquidsmentioning

confidence: 97%

“…Immobilization of IL-appended organic polymer [313] or solgel-processed silicate [314] particles represent alternative way of IL coupling to the electrode surface. Typically, organic polymer microparticles require other polymer matrix (for example Nafion [313]) matrix for stable immobilization.…”

Section: Electrodes Modified With Appended Ionic Liquidsmentioning

confidence: 99%

A review on electrodes modified with ionic liquids

Opałło

Leśniewski

2011

Journal of Electroanalytical Chemistry

Self Cite

339

171

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“…The electroactive part of the sensor was prepared from commercially available CNPs and synthesized TMA particles. The latter were prepared using the modified Stöber method as earlier described . Briefly, 537 μl of TMOS and 105.5 μl of TMA solution in 9 ml of methanol was mixed with a solution of 0.5 g CTAB and 3 ml of NH 3 (aq) in 10 ml of water.…”

Section: Methodsmentioning

confidence: 90%

Stripe‐shaped Electrochemical Biosensor for Organophosphate Pesticide

et al. 2018

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Detection of organophosphate pesticides is indispensable to improve the quality of the water and therefore required by the European Union law. Here, we propose a novel architecture of a pesticide biosensor where the enzyme and the electrode are placed into neighboring zones in the stripe form. This separation permits to use the optimal conditions for their immobilization resulting in undisrupted mechanical stability of the biosensor. The enzyme, acetylcholinesterase, generates thiocholine which is further oxidized at the carbon nanoparticles film electrode, exhibiting high electrocatalytic activity. The whole device was tested as a biosensor for malaoxon employing a wild or recombinant acetylcholinesterase. The latter allowed for incubation time decrease down to 10 minutes and lowered the detection limit to 0.25 nM. Moreover, the encapsulated enzyme activity was visualised by a scanning electrochemical microscopy.

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“…Ionic liquid precursor 1-methyl-3-(3-trimethoxysilylpropyl)imidazolium bis(trifluoromethyl sulfonyl)imide was synthesized as described earlier [24]. It was used together with TMOS for cationic silicate submicrometre particles preparation [20]. Their suspension was prepared by mixing 5 mg of particles with 1 ml of methanol and the mixture was sonicated for 30 min.…”

Section: Chemicals and Materialsmentioning

confidence: 99%

“…The first component was obtained from ionic liquid precursor. These particles adsorb on indium tin oxide (ITO) electrode from methanol and act as sponge for redox active anions in aqueous solution [20]. CNPs were earlier used for LbL film electrode preparation with the use of cationic polymer as a linker [12,[21][22][23]].…”

Section: Introductionmentioning

confidence: 99%

Carbon ceramic nanoparticulate film electrode prepared from oppositely charged particles by layer-by-layer approach

Leśniewski

Niedziółka‐Jönsson

Rizzi

et al. 2010

Electrochemistry Communications

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Carbon ceramic nanoparticulate film electrode was prepared of negatively charged sulfonated carbon nanoparticles and positively charged silicate submicrometre particles with appended imidazolium groups. They were immobilised on indium tin oxide surface by layer by layer method: alternative immersion into suspension of positive and negative particles. Film formation is confirmed by scanning electron microscopyafter larger number of immersion and withdrawal steps more material is deposited on the electrode substrate. The nanoparticulate film is stable and the obtained electrode exhibits significant increase of capacitive current and faradaic current corresponding to hydrogen peroxide electroreduction. The effect of the number of immersion and withdrawal steps is strikingly visible on dioxygen bioelectrocatalytic reduction current after adsorption of enzyme: laccase.

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Electrode modified with nanoporous silicate submicrometre particles with appended ionic liquid

Cited by 10 publications

References 33 publications

A review on electrodes modified with ionic liquids

A review on electrodes modified with ionic liquids

Stripe‐shaped Electrochemical Biosensor for Organophosphate Pesticide

Carbon ceramic nanoparticulate film electrode prepared from oppositely charged particles by layer-by-layer approach

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