A kinetics study of diffusion-adsorption of antibiotics chloramphenicol, tinidazole, and ofloxacine, and anti-inflammatory agent piroxicam at MnO2/ErGO and AgNPs/MnO2/ErGO-modified glassy-carbon electrode
Vol. 134 No. 1A (2025), Original Article
Vol. 134 No. 1A (2025)

A kinetics study of diffusion-adsorption of antibiotics chloramphenicol, tinidazole, and ofloxacine, and anti-inflammatory agent piroxicam at MnO2/ErGO and AgNPs/MnO2/ErGO-modified glassy-carbon electrode

Original Article
https://doi.org/10.26459/hueunijns.v134i1A.7504
Published 2025-03-19
Ho Xuan Anh Vu*
Faculty of Chemistry, University of Sciences, Hue University, 77 Nguyen Hue St., Hue, Vietnam
Trung Hieu Le
Faculty of Chemistry, University of Sciences, Hue University, 77 Nguyen Hue St., Hue, Vietnam
Dang Giang Chau Nguyen
Department of Chemistry, University of Sciences, Hue University, 77 Nguyen Hue St., Hue, Vietnam
Hai Phong Nguyen
Department of Chemistry, University of Sciences, Hue University, 77 Nguyen Hue St., Hue, Vietnam
Khac Lieu Pham
Faculty of Environment, University of Sciences, Hue University, Vietnam
PDF (Vietnamese)

Keywords

MnO2/ErGO
AgNPs/MnO2/ErGO
antibiotics
anti-inflammatory drug
adsorption kinetics
diffusion kinetics MnO2/ErGO
AgNPs/MnO2/ErGO
chất kháng sinh
chất kháng viêm
động học hấp phụ
động học khuếch tán

How to Cite

1.
Hồ XAV, Lê TH, Nguyễn Đăng GC, Nguyễn HP, Phạm KL. A kinetics study of diffusion-adsorption of antibiotics chloramphenicol, tinidazole, and ofloxacine, and anti-inflammatory agent piroxicam at MnO2/ErGO and AgNPs/MnO2/ErGO-modified glassy-carbon electrode. hueuni-jns [Internet]. 2025Mar.19 [cited 2025May6];134(1A):77-88. Available from: https://jos.hueuni.edu.vn/index.php/hujos-ns/article/view/7504
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Abstract

A glassy carbon (GC) electrode was modified with MnO2/GO and AgNPs/MnO2/GO composite materials. After electrochemical reduction, the reduced MnO2/ErGO and AgNPs/MnO2/ErGO materials exhibited large electrochemical active surface areas of 0.079 cm2 and 0.087 cm2, respectively; the charge transfer resistance (Rct) was relatively small, at 0.188 kΩ and 0.077 kΩ, respectively. In this study, two antibiotics, namely chloramphenicol (CAP) and tinidazole (TNZ) were adsorbed onto the surface of MnO2/ErGO-GCE, and the antibiotic ofloxacine (OFX) was adsorbed onto the surface of AgNPs/MnO2/ErGO-GCE. The results show that the adsorption process took place within 3 minutes and followed a pseudo-second-order kinetic model with saturation adsorption capacities of 1,310.16, 1,873.41, and 1,140.93 mg.g-1, respectively. For the anti-inflammatory drug piroxicam (PRX), the diffusion process across the solution – AgNPs/MnO2/ErGO-GCE electrode interface was more dominant than the adsorption process, with the diffusion process occurring rapidly within less than 30 s. This study provides further insights into the mechanism of the diffusion-adsorption processes of antibiotics and anti-inflammatory agents on electrode-modified surfaces.

https://doi.org/10.26459/hueunijns.v134i1A.7504
PDF (Vietnamese)

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