Startseite Naturwissenschaften Evaluation of the catalytic activity of graphene oxide and zinc oxide nanoparticles on the electrochemical sensing of T1R2-Rebaudioside A complex supported by in silico methods
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Evaluation of the catalytic activity of graphene oxide and zinc oxide nanoparticles on the electrochemical sensing of T1R2-Rebaudioside A complex supported by in silico methods

  • Krishna Bisetty EMAIL logo , Suvardhan Kanchi und Phathisanani Hloma
Veröffentlicht/Copyright: 28. Juni 2021
Pure and Applied Chemistry
Aus der Zeitschrift Pure and Applied Chemistry Band 93 Heft 10

Abstract

Herein, we report on the performance of graphene oxide (GOx) and zinc oxide nanoparticles (ZnONPs) on a platinum (Pt) electrode, immobilized with the human T1R2 sweet taste receptor subunit for the detection of rebaudioside A (Reb-A). The characterization studies performed in this work confirmed the thin-layered structure of GOx and the polydispersed nature of ZnONPs. The elucidation of the mass loss observed by TGA demonstrates the stability of GOx. The cyclic voltammetry results for Pt/GOx revealed good catalytic activity over Pt/ZnONPs for adsorption of the T1R2-Reb-A complex. In addition, a series of computational modelling studies were carried out to better understand the surface adsorption phenomena of GOx and ZnONPs to mimic the layer-by-layer electrode modification strategies independently. The strongest interaction energy observed (−573 kcal mol−1) for the direct interaction of ZnONPs onto the Pt electrode surface, demonstrates a stronger adsorption in contrast to the GOx modified Pt electrode (−23 kcal mol−1). However, the overall results for the layered-nanocomposite revealed that the GOx (−256 kcal mol−1) were more strongly adsorbed in contrast to ZnONPs (−231 kcal mol−1) for the detection of the T1R2-ReB-A complex, demonstrating the reliability of our GOx electrode functionalization strategy. The results of this study can potentially be used to improve the design of rapid Reb-A sensors for the food and beverage industry.

Keywords: Adsorption studies; chemistry and its applications; graphene oxide; rebaudioside A; T1R2; VCCA-2020; zinc oxide nanoparticles
Corresponding author: Krishna Bisetty, Department of Chemistry, Durban University of Technology, P.O. Box 1334, Durban, 4000, South Africa, e-mail:

Article note: A collection of invited papers based on presentations at the Virtual Conference on Chemistry and its Applications (VCCA-2020) held on-line, 1–31 August 2020.

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Published Online: 2021-06-28
Published in Print: 2021-10-26

© 2021 IUPAC & De Gruyter. This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. For more information, please visit: http://creativecommons.org/licenses/by-nc-nd/4.0/

Artikel in diesem Heft

  1. Frontmatter
  2. In this issue
  3. Preface
  4. Celebrating a centenary of macromolecules
  5. Invited papers
  6. Hermann Staudinger – Organic chemist and pioneer of macromolecules
  7. On cellulose spatial organization and interactions as unraveled by diffraction and spectroscopic methods throughout the 20th century
  8. Dielectric properties of processed cheese
  9. Drawing inspiration from nature to develop anti-fouling coatings: the development of biomimetic polymer surfaces and their effect on bacterial fouling
  10. Mitigating the charge trapping effects of D-sorbitol/poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) polymer blend contacts to crystalline silicon
  11. Influence of thermal treatment on the properties and intermolecular interactions of epoxidized natural rubber-salt systems
  12. Leveraging diversity and inclusion in the polymer sciences: the key to meeting the rapidly changing needs of our world
  13. Preface
  14. The virtual conference on chemistry and its applications, VCCA-2020, 1–31 August 2020
  15. Conference papers
  16. Effect of non-competitive inhibitors of aminopeptidase N on viability of human and murine tumor cells
  17. Evaluation of the catalytic activity of graphene oxide and zinc oxide nanoparticles on the electrochemical sensing of T1R2-Rebaudioside A complex supported by in silico methods
  18. Maximizing student learning through the use of demonstrations
  19. Molecular spaces and the dimension paradox
  20. Reaction of •OH with CHCl=CH-CHF2 and its atmospheric implication for future environmental-friendly refrigerant
  21. In silico study of the synergistic anti-tumor effect of hybrid topoisomerase-HDAC inhibitors
  22. Structural and electronic properties of Cu4O3 (paramelaconite): the role of native impurities
https://doi.org/10.1515/pac-2020-1104
Schlagwörter für diesen Artikel
Adsorption studies; chemistry and its applications; graphene oxide; rebaudioside A; T1R2; VCCA-2020; zinc oxide nanoparticles

Artikel in diesem Heft

  1. Frontmatter
  2. In this issue
  3. Preface
  4. Celebrating a centenary of macromolecules
  5. Invited papers
  6. Hermann Staudinger – Organic chemist and pioneer of macromolecules
  7. On cellulose spatial organization and interactions as unraveled by diffraction and spectroscopic methods throughout the 20th century
  8. Dielectric properties of processed cheese
  9. Drawing inspiration from nature to develop anti-fouling coatings: the development of biomimetic polymer surfaces and their effect on bacterial fouling
  10. Mitigating the charge trapping effects of D-sorbitol/poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) polymer blend contacts to crystalline silicon
  11. Influence of thermal treatment on the properties and intermolecular interactions of epoxidized natural rubber-salt systems
  12. Leveraging diversity and inclusion in the polymer sciences: the key to meeting the rapidly changing needs of our world
  13. Preface
  14. The virtual conference on chemistry and its applications, VCCA-2020, 1–31 August 2020
  15. Conference papers
  16. Effect of non-competitive inhibitors of aminopeptidase N on viability of human and murine tumor cells
  17. Evaluation of the catalytic activity of graphene oxide and zinc oxide nanoparticles on the electrochemical sensing of T1R2-Rebaudioside A complex supported by in silico methods
  18. Maximizing student learning through the use of demonstrations
  19. Molecular spaces and the dimension paradox
  20. Reaction of •OH with CHCl=CH-CHF2 and its atmospheric implication for future environmental-friendly refrigerant
  21. In silico study of the synergistic anti-tumor effect of hybrid topoisomerase-HDAC inhibitors
  22. Structural and electronic properties of Cu4O3 (paramelaconite): the role of native impurities
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