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عبد الرحمن بن ابراهيم المنصور Abdulrahman Almansour

Professor

استاذ الكيمياء العضوية

كلية العلوم
كلية العلوم قسم الكيمياء مكتب 2ب 96
المنشورات
مقال فى مجلة
2022
تم النشر فى:

Investigation of the one-step electrochemical deposition of graphene oxide-doped poly(3,4- ethylenedioxythiophene)–polyphenol oxidase as a dopamine sensor

In this paper, we fabricated poly(3,4-ethylenedioxythiophene) (PEDOT)–graphene oxide–polyphenol oxidase (PEDOT–GO–PPO) as a dopamine sensor. The morphology of PEDOT–GO–PPO was observed using scanning electron microscopy. Cyclic voltammetry was conducted to study the oxidation–reduction characteristics of dopamine. To optimize the pH, potential and limit of detection of dopamine, the amperometric technique was employed. The found limit of detection was 8 109 M, and the linear range was from 5 108 to 8.5 105 M. The Michaelis–Menten constant (Km) was calculated to be 70.34 mM, and the activation energy of the prepared electrode was 32.75 kJ mol1. The electrode shows no significant change in the interference study. The modified electrode retains up to 80% of its original activity after 2 months. In the future, the biosensor can be used for the quantification of dopamine in human urine samples. The present modified electrode constitutes a tool for the electrochemical analysis of dopamine.

رقم المجلد
12
الصفحات
15575
مزيد من المنشورات
publications

This paper describes a simple phyto-remediation of feather-like silver/copper bi-matrix (BMs) was constructed by employing pommagrant waste peel (PWP) extract as crucial role of reducing agent and…

2023
publications

Using natural dyes in dyeing industries becomes an alternative to synthetic dyes, which are known to contain harmful chemicals that can pose risks to the environment and human health.

2023
publications

A novel spiroheterocyclic hybrid comprising several privileged structures comprising pyrrolidine,…

بواسطة Abdulrahman I. Almansour, Khloud Ibrahim Al-Shemaimari, Shatha Ibhrahim Alaqeel
2023