Translating potentiometric detection into non-enzymatic amperometric measurement of H2O2

Yin, Tanji; Wang, Hemin; Li, Jinghui; Yuan, Baiqing; Qin, Wei

doi:10.1016/j.talanta.2021.122489

Cited by 11 publications

(5 citation statements)

References 31 publications

(35 reference statements)

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“…Following a similar principle, Yin and Yuan replaced the photoelectrode with a glassy carbon electrode for the nonenzymatic amperometric measurements of H 2 O 2 . 76 H 2 O 2 was oxidized at the glassy carbon working electrode to O 2 at a fixed potential relative to the ISE, which was connected to the reference channel. Changing the potential of the ISEs resulted in a change of anodic current.…”

Section: Ises Coupled To Photoelectrodesmentioning

confidence: 99%

Ionophore-based ion-selective electrodes: signal transduction and amplification from potentiometry

2022

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Section: Ises Coupled To Photoelectrodesmentioning

confidence: 99%

Ionophore-based ion-selective electrodes: signal transduction and amplification from potentiometry

2022

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“…The use of a single electrochemical cell in the proposed novel experimental setup was made possible by the presence of a constant BGE in the sample solution. This eliminated the need for having separate sample and detection cells connected by a salt bridge, which is an advantage over previous studies employing the ISE as the RE [13][14][15]. However, it is important to ensure that the analyte recognition takes place only at the K + -ISE.…”

Section: Potentiometric Measurementsmentioning

confidence: 99%

“…In the other compartment, a SCISE was placed and connected as reference electrode. The two compartments were connected by a salt-bridge [14,15] or Ag/AgCl wire [13]. In this work, a single-cell approach is presented which is simple and easy to miniaturize.…”

Section: Chronoamperometric and Chronocoulometric Measurementsmentioning

confidence: 99%

“…Connecting the indicator electrode (ISE) as reference electrode was originally introduced by Crespo et al [12] when employing a readout method based on electrogenerated chemiluminescence. Recently, the conversion of potentiometric responses to amperometric and coulometric signal readout modes was also employed by connecting the SCISE as RE [13][14][15]. These studies employed a two-compartment electrochemical setup.…”

Section: Introductionmentioning

confidence: 99%

“…These studies employed a two-compartment electrochemical setup. One is the "sample" compartment where analyte recognition takes place and the other is the "detection" compartment where an amperometric signal is generated from the oxidation of H 2 O 2 [15], or a redox couple in solution [13,14]. The two compartments were connected either by a salt bridge [14,15], or Ag/AgCl wire [13].…”

Section: Introductionmentioning

confidence: 99%

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Novel Experimental Setup for Coulometric Signal Transduction of Ion-Selective Electrodes

et al. 2022

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In this work, a novel and versatile experimental setup for coulometric signal transduction of ion-selective electrodes (ISEs) is introduced and studied. It is based on a constant potential coulometric measurement carried out using a one-compartment three-electrode electrochemical cell. In the setup, a potassium ion-selective electrode (K+- ISE) is connected as the reference electrode (RE). A poly(3,4-ethylenedioxythiophene) doped with polystyrene sulfonate (PEDOT:PSS)-based electrode with a dummy membrane (DM) and a glassy carbon (GC) rod are connected as the working electrode (WE) and counter electrode (CE), respectively. Adding a non-selective dummy membrane to the structure of the WE facilitates the regulation of the measured signal and response time. The results from electrochemical impedance spectroscopy measurements carried out on the WE showed that the time constant is profoundly influenced by the dummy membrane thickness. In addition, the redox capacitance of the PEDOT:PSS film shows a better correlation with the electrode area than the film thickness. Sequential addition/dilution experiments showed the improvement of current and cumulated charge signals in the new setup studied in this work compared to the setup used in the original coulometric signal transduction method. Both conventional ISEs and solid-contact ISEs (SCISEs) were used in this work. The results showed that the coulometric response was independent of the type of ISE used as RE, confirming the versatility of the novel set-up.

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Photoelectrochemical conversion for ion-selective electrodes based on CdS semiconductor film

Peng,

Shakil,

Yuan

et al. 2024

Analytica Chimica Acta

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Translating potentiometric detection into non-enzymatic amperometric measurement of H2O2

Cited by 11 publications

References 31 publications

Ionophore-based ion-selective electrodes: signal transduction and amplification from potentiometry

Ionophore-based ion-selective electrodes: signal transduction and amplification from potentiometry

Novel Experimental Setup for Coulometric Signal Transduction of Ion-Selective Electrodes

Photoelectrochemical conversion for ion-selective electrodes based on CdS semiconductor film

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