Enzymeless Electrocatalytic Detection of Uric Acid Using Polydopamine/Polypyrrole Copolymeric film

Adeosun, Waheed A.; Asiri, Abdullah M.; Marwani, Hadi M.; Rahman, Mohammed M.

doi:10.1002/slct.201903628

Cited by 56 publications

(33 citation statements)

References 55 publications

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“…Scan rate gives vital information on the electrochemical behavior of an analyte on the electrode surface [ 50 ]. For instance, the scan rate gives information about the diffusivity or absorptivity of the reaction.…”

Section: Resultsmentioning

confidence: 99%

Novel Aminosilane (APTES)-Grafted Polyaniline@Graphene Oxide (PANI-GO) Nanocomposite for Electrochemical Sensor

et al. 2021

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Lead is a potentially toxic element (PTE) that has several adverse medical effects in humans. Its presence in the environment became prominent due to anthropogenic activities. The current study explores the use of newly developed composite materials (organic–inorganic hybrid) based on PANI-GO-APTES for electrochemical detection of Pb2+ in aqueous solution. The composite material (PANI-GO-APTES) was synthesized by chemical method and was characterized with SEM, XPS, XEDS, XRD, TGA, FTIR, EIS and CV. The result of characterization indicates the successful synthesis of the intended material. The PANI-GO-APTES was successfully applied for electrochemical detection of Pb2+ using cyclic voltammetry and linear sweep voltammetry method. The limit of detection of Pb2+ was 0.0053 µM in the linear range of 0.01 µM to 0.4 µM. The current response produced during the electrochemical reduction of Pb2+ catalyzed by PANI-GO-APTES was also very repeatable, reproducible and rapid. The application of PANI-GO-APTES-modified GCE in real sample analysis was also established. Therefore, PANI-GO-APTES is presented as a potential Pb2+ sensor for environmental and human health safety.

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Section: Resultsmentioning

confidence: 99%

Novel Aminosilane (APTES)-Grafted Polyaniline@Graphene Oxide (PANI-GO) Nanocomposite for Electrochemical Sensor

et al. 2021

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“…As it was mentioned above, uric acid is an electro-active compound that has oxidation potential close to +0.6 (±0.1 V) V vs. Ag/AgCl [ 10 , 12 , 52 ]. Electrochemical methods were used only for uric acid or for simultaneous determination of several target molecules including uric acid in previous studies [ 53 , 54 , 55 , 56 , 57 , 58 ]. For the discussion of interfering molecules, it should be noted that the primarily predicted purpose of the sensor, for example, for dopamine or ascorbic acid [ 59 , 60 ] or any other target molecule detection, in most cases, means the optimized conditions at which the molecules are identified as interfering and analyzed at the optimized conditions of analysis.…”

Section: The Main Interfering Molecules For Uric Acid Determinationmentioning

confidence: 99%

Molecular Imprinting Technology for Determination of Uric Acid

Ratautaitė

Samukaitė-Bubnienė

Plaušinaitis

et al. 2021

IJMS

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The review focuses on the overview of electrochemical sensors based on molecularly imprinted polymers (MIPs) for the determination of uric acid. The importance of robust and precise determination of uric acid is highlighted, a short description of the principles of molecular imprinting technology is presented, and advantages over the others affinity-based analytical methods are discussed. The review is mainly concerned with the electro-analytical methods like cyclic voltammetry, electrochemical impedance spectroscopy, amperometry, etc. Moreover, there are some scattered notes to the other electrochemistry-related analytical methods, which are capable of providing additional information and to solve some challenges that are not achievable using standard electrochemical methods. The significance of these overviewed methods is highlighted. The overview of the research that is employing MIPs imprinted with uric acid is mainly targeted to address these topics: (i) type of polymers, which are used to design uric acid imprint structures; (ii) types of working electrodes and/or other parts of signal transducing systems applied for the registration of analytical signal; (iii) the description of the uric acid extraction procedures applied for the design of final MIP-structure; (iv) advantages and disadvantages of electrochemical methods and other signal transducing methods used for the registration of the analytical signal; (vi) overview of types of interfering molecules, which were analyzed to evaluate the selectivity; (vi) comparison of analytical characteristics such as linear range, limits of detection and quantification, reusability, reproducibility, repeatability, and stability. Some insights in future development of uric acid sensors are discussed in this review.

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“…A non-enzymatic sensor for sulfite has been developed by Marwani [117], based on polypyrrole-chitosan biocomposite modified glassy carbon electrode.…”

Section: Contaminants and Additivesmentioning

confidence: 99%

“…For instance, polypyrrole is a conducting polymer because of delocalized π electrons enhancing the mobility of ions, polarons, solitons and bipolarons [118]. The electrical conductivity could be further improved including dopants (p-doing) into the polymeric matrix [117]. Chitosan is a natural biopolymer with good biocompatibility and its amine group and hydroxyl moieties could improve hydrogen bonding to the polypyrrole backbone [117].…”

Section: Contaminants and Additivesmentioning

confidence: 99%

“…The electrical conductivity could be further improved including dopants (p-doing) into the polymeric matrix [117]. Chitosan is a natural biopolymer with good biocompatibility and its amine group and hydroxyl moieties could improve hydrogen bonding to the polypyrrole backbone [117]. Further, the combination of PPY with chitosan increases its adhesion onto the electrodic surface.…”

Section: Contaminants and Additivesmentioning

confidence: 99%

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Recent Advances in Electrochemical Chitosan-Based Chemosensors and Biosensors: Applications in Food Safety

Petrucci¹,

Pasquali²,

Scaramuzzo³

et al. 2021

Preprint

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Chitosan is a biopolymer derived from chitin. It is a non-toxic, biocompatible, bioactive, and biodegradable polymer. Due to its properties, chitosan has found applications in several and different fields such as agriculture, food industry, medicine, paper fabrication, textile industry, and water treatment. In addition to these properties, chitosan has a good film-forming ability which allows it to be widely used for the development of sensors and biosensors. This review is focused on the use of chitosan for the formulation of electrochemical chemosensors. It also aims to provide an overview of the advantages of using chitosan as an immobilization platform for biomolecules by highlighting its applications in electrochemical biosensors. Finally, applications of electro-chemical chitosan-based chemosensors and biosensors in food safety are illustrated

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Enzymeless Electrocatalytic Detection of Uric Acid Using Polydopamine/Polypyrrole Copolymeric film

Cited by 56 publications

References 55 publications

Novel Aminosilane (APTES)-Grafted Polyaniline@Graphene Oxide (PANI-GO) Nanocomposite for Electrochemical Sensor

Novel Aminosilane (APTES)-Grafted Polyaniline@Graphene Oxide (PANI-GO) Nanocomposite for Electrochemical Sensor

Molecular Imprinting Technology for Determination of Uric Acid

Recent Advances in Electrochemical Chitosan-Based Chemosensors and Biosensors: Applications in Food Safety

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