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Journals / Gümüşhane Üniversitesi Fen Bilimleri Dergisi / 2019 / Cilt: 9 - Sayı: 4

Simultaneous Electrochemical Detection of Ascorbic Acid and Dopamine on PbO-Graphene Electrode

PbO-Grafen Elektrot Yüzeyinde Askorbik Asit ile Dopaminin Eşzamanlı Elektrokimyasal Tespiti

Hülya ÖZTÜRK DOĞA
Bingül KURT URHAN
Tuba ÖZNÜLÜER ÖZER
Pages
742–750
Publication Date
2022-10-18
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

This PbO-G nanocomposite-modified electrode provided a novel, simple, and low-cost route for the electrochemical detection and amperometric sensing of DA in the presence of AA.

📌 3 Key Takeaways

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Objective & Hypothesis:In this study, cathodic electrodeposition of lead oxide-graphene (PbO-G) nanocomposites on Au electrode surface was carried out by a new one-pot electrochemical method in the same solution containing Pb+2 and graphene oxide.
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Key Findings & Data:Also, the amperometric detection of dopamine on PbO-G electrode surface was investigated and the limit of detection was estimated as 0.001 µM in the linear range from 0.5 µM to 100 µM (at a signal-to-noise ratio of 3.0).
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Conclusion & Impact:This PbO-G nanocomposite-modified electrode provided a novel, simple, and low-cost route for the electrochemical detection and amperometric sensing of DA in the presence of AA.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Askorbik asit · Dopamin · Grafen

Abstract

In this study, cathodic electrodeposition of lead oxide-graphene (PbO-G) nanocomposites on Au electrode surface was carried out by a new one-pot electrochemical method in the same solution containing Pb+2 and graphene oxide. XRD, XPS, SEM, and EDS spectroscopy techniques were employed to analyze the morphological and structural characteristics of the composite materials. For simultaneous electrochemical detection of ascorbic acid (AA) and dopamine (DA), the PbO-G nanocomposite exhibited a higher current density and lower oxidation potential than the bare Au and PbO-modified Au electrodes. Also, the amperometric detection of dopamine on PbO-G electrode surface was investigated and the limit of detection was estimated as 0.001 µM in the linear range from 0.5 µM to 100 µM (at a signal-to-noise ratio of 3.0). This PbO-G nanocomposite-modified electrode provided a novel, simple, and low-cost route for the electrochemical detection and amperometric sensing of DA in the presence of AA.

Özet

Bu çalışmada, kurşun oksit-grafen (PbO-G) nanokompozitlerinin Au elektrot yüzeyinde katodik elektrodepozisyonu; yeni bir elektrokimyasal metot kullanılarak Pb+2 ve grafen oksit ihtiva eden aynı çözelti içerisinde, sabit tek bir potansiyelde gerçekleştirildi. Elde edilen kompozit malzemenin morfolojik ve yapısal özelliklerini analiz etmek için XRD, XPS, SEM ve EDS spektroskopisi teknikleri kullanıldı. PbO-G nanokompoziti askorbik asit (AA) ile dopaminin (DA) eşzamanlı elektrokimyasal tespiti için çıplak Au ve PbO-modifiye edilmiş Au elektrotlardan daha yüksek bir akım yoğunluğu ve daha düşük oksidasyon potansiyeli gösterdi. Ayrıca DA’in PbO-G elektrot yüzeyinde amperometrik tayini incelendi ve 0.5 µM ile 100 µM arasındaki doğrusal aralıkta tayin sınırı (sinyal/gürültü oranı=3 için) 0.001±0.00028 µM olarak hesaplandı. PbO-G nanokompozit modifiye elektrot, AA varlığında DA’in elektrokimyasal tespiti ve amperometrik tayini için yeni, basit ve düşük maliyetli bir analiz yöntemi sağlamaktadır.

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Cite This Article

DOĞA, H. Ö., URHAN, B. K., ÖZER, T. Ö. (2022). Simultaneous Electrochemical Detection of Ascorbic Acid and Dopamine on PbO-Graphene Electrode. Gümüşhane Üniversitesi Fen Bilimleri Dergisi, Cilt: 9 - Sayı: 4, 742–750. https://ajindex.com/articles/527053

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