Electrochemically reducing α-MnO2/GO material and its application to analysing eye ointment
Vol. 132 No. 1C (2023), Original Article
Vol. 132 No. 1C (2023)

Electrochemically reducing α-MnO2/GO material and its application to analysing eye ointment

Original Article
https://doi.org/10.26459/hueunijns.v132i1C.7242
Published 2023-09-30
Ho Xuan Anh Vu*
Faculty of Chemistry, University of Sciences, Hue University, 77 Nguyen Hue St., Hue, Vietnam
Nguyen Van Tuan Vu
Trang Bang High School, Tay Ninh, Vietnam
Le Trung Hieu
Faculty of Chemistry, University of Sciences, Hue University, 77 Nguyen Hue St., Hue, Vietnam
Vo Chau Ngoc Anh
Faculty of Basic Science, University of Medicine and Pharmacy, Hue University, Vietnam
Nguyen Hai Phong
Faculty of Chemistry, University of Sciences, Hue University, 77 Nguyen Hue St., Hue, Vietnam
Hoang Duong Thuy Dan
Drug, cosmetic and food quality control center of Thua Thien Hue province, Vietnam
PDF (Vietnamese)

Keywords

α-MnO2/ErGO
chronoamperometry
chloramphenicol
tinidazole
eye ointment α-MnO2/ErGO
điện thế thời gian
chloramphenicol
tinidazole
thuốc mỡ tra mắt

How to Cite

1.
Hồ Xuân AV, Vũ NVT, Hiếu LT, Anh VCN, Phong NH, Đan HDT. Electrochemically reducing α-MnO2/GO material and its application to analysing eye ointment. hueuni-jns [Internet]. 2023Sep.30 [cited 2024Jul.3];132(1C):51-9. Available from: https://jos.hueuni.edu.vn/index.php/hujos-ns/article/view/7242
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Abstract

Manganese dioxide (MnO2) was directly synthesized on a graphene oxide (GO) substrate. The electrochemical reduction process of α-MnO2/GO was investigated by using cyclic voltammetry (CV) and chronoamperometry (i-T) techniques. The obtained materials were studied by using FT-IR spectroscopy, Raman spectroscopy, surface area analysis, and electrochemical impedance spectroscopy. The α-MnO2 structure was determined through FT-IR spectroscopy and Raman spectroscopy spectra at  507 and 642.5 cm–1. The α-MnO2/ErGOCV and α-MnO2/ErGOi-T reduction materials exhibit low electrochemical impedance (0,188 and 0,147 kΩ) and a large surface area of 1.7 times greater than that of α-MnO2/GO), indicating the superior properties of the α-MnO2/ErGO composite material. These properties facilitate electron transfer and enhance the electrocatalytic activity of the sensor on the modified electrode surface. The LS-AdCSV method utilizing the α-MnO2/ErGO electrode can be employed for the simultaneous analysis of chloramphenicol and tinidazole. The chloramphenicol content in eye ointment determined with the proposed method agrees well with the labelled value.

https://doi.org/10.26459/hueunijns.v132i1C.7242
PDF (Vietnamese)

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