Electrochemical sensor for detecting both oxidizing and reducing compounds based on poly(ethyleneimine)/phosphotungstic acid multilayer film modified electrode

Xu, Jie; Xu, Shimei; Feng, Shun; Hao, Yanjun; Wang, Jide

doi:10.1016/j.electacta.2015.06.058

Cited by 8 publications

(1 citation statement)

References 31 publications

(34 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The alternating immersion of an ITO electrode into phosphotungstic acid and PEI resulted in the development of an electrochemical sensor for the determination of ascorbic acid and H 2 O 2 [34]. Entrapping positively charged iron(III)-porphyrin between poly(sodium 4-styrenesulphonate) (PSS) layers for the electrochemical determination of bromate was reported by Lee at al.…”

Section: Sensing Film Consisting Of Two Alternate Deposited Layers: Pe and A Sensing/mediating/transducing Componentmentioning

confidence: 99%

Polyelectrolytes Assembly: A Powerful Tool for Electrochemical Sensing Application

Rončević

Krivić

Buljac

et al. 2020

Sensors

View full text Add to dashboard Cite

The development of sensing coatings, as important sensor elements that integrate functionality, simplicity, chemical stability, and physical stability, has been shown to play a major role in electrochemical sensing system development trends. Simple and versatile assembling procedures and scalability make polyelectrolytes highly convenient for use in electrochemical sensing applications. Polyelectrolytes are mainly used in electrochemical sensor architectures for entrapping (incorporation, immobilization, etc.) various materials into sensing layers. These materials can often increase sensitivity, selectivity, and electronic communications with the electrode substrate, and they can mediate electron transfer between an analyte and transducer. Analytical performance can be significantly improved by the synergistic effect of materials (sensing material, transducer, and mediator) present in these composites. As most reported methods for the preparation of polyelectrolyte-based sensing layers are layer-by-layer and casting/coating methods, this review focuses on the use of the latter methods in the development of electrochemical sensors within the last decade. In contrast to many reviews related to electrochemical sensors that feature polyelectrolytes, this review is focused on architectures of sensing layers and the role of polyelectrolytes in the development of sensing systems. Additionally, the role of polyelectrolytes in the preparation and modification of various nanoparticles, nanoprobes, reporter probes, nanobeads, etc. that are used in electrochemical sensing systems is also reviewed.

show abstract

Section: Sensing Film Consisting Of Two Alternate Deposited Layers: Pe and A Sensing/mediating/transducing Componentmentioning

confidence: 99%

Polyelectrolytes Assembly: A Powerful Tool for Electrochemical Sensing Application

Rončević

Krivić

Buljac

et al. 2020

Sensors

View full text Add to dashboard Cite

show abstract

Electrochemical Sensor based on Indium Tin Oxide Glass Modified with Poly(Ethyleneimine)/Phosphomolybdic Acid Composite Multilayers

et al. 2017

Self Cite

View full text Add to dashboard Cite

In this work, one novel electrochemical sensor was prepared by alternative deposition of phosphomolybdic acid (PMoA) and poly(ethyleneimine) (PEI) on an indium tin oxide glass substrate through layer‐by‐layer assembly. The performance of as‐prepared electrode was evaluated with both of oxidizing compounds of iodate and H2O2 and reducing compounds of dopamine and ascorbic acid as models. The results showed that corresponding current response of redox peak increased linearly with the concentration of above compounds increasing in certain ranges, respectively. Limits of detection to them were in the range of 1.0×10−4 ‐ 4.3×10−4 mg mL−1 with cyclic voltammetry (CV) in 0.1 mol L−1 NaAc‐HAc buffer (pH 5.0). The electrode showed high stability and remained 95 % of its initial activity even after 100 cycles of CV scan. When applied in real samples of table salts, juice and human serum, high recoveries of 96.84 to 100.33 % were achieved with relative standard deviations of 1.11‐3.96 % (n=3) at three spiked levels. Moreover, it was also successfully applied for the simultaneous determination of dopamine and ascorbic acid in human serum with differential pulse voltammetry. The results indicated that PMoA/PEI multilayer modified electrode can be used as a universal electrochemical sensor for sensitive detection of redox compounds.

show abstract

Cetyltrimethylammonium bromide assisted self-assembly of phosphotungstic acid on graphene oxide nanosheets for selective determination of tryptophan

Yang

2016

J Solid State Electrochem

View full text Add to dashboard Cite

Electrochemical sensor for detecting both oxidizing and reducing compounds based on poly(ethyleneimine)/phosphotungstic acid multilayer film modified electrode

Cited by 8 publications

References 31 publications

Polyelectrolytes Assembly: A Powerful Tool for Electrochemical Sensing Application

Polyelectrolytes Assembly: A Powerful Tool for Electrochemical Sensing Application

Electrochemical Sensor based on Indium Tin Oxide Glass Modified with Poly(Ethyleneimine)/Phosphomolybdic Acid Composite Multilayers

Cetyltrimethylammonium bromide assisted self-assembly of phosphotungstic acid on graphene oxide nanosheets for selective determination of tryptophan

Contact Info

Product

Resources

About