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Journals / Gazi Üniversitesi Fen Bilimleri Dergisi Part C: Tasarım ve Teknoloji / 2022 / Cilt: 10 - Sayı: 1

Investigation of Electrochemical Behavior and Voltammetric Determination of 2-Nitrophenol Using Modified Electrode Prepared by Electropolymerization of 4,4'-Diaminobenzophenone on Pencil Graphite Electrode Surface

Grafit Uç Elektrot Yüzeyinde 4,4’-diaminobenzofenon’un Elektropolimerleşmesi ile Hazırlanan Modifiye Elektrot Kullanılarak 2-Nitrofenolün Elektrokimyasal Davranışının İncelenmesi ve Voltametrik Tayini

Gülşen TAŞKIN ÇAKICI
Tuğba TABANLIGİL CALAM
Süleyman ÇALIŞKAN
Pages
15–26
Publication Date
2022-10-18
DOI
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AI Summary & Key Takeaways

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

The determination of 2-NP in tap water by using the modified electrode has been successfully performed using the standard addition method with a good recovery and low relative standard deviation.

📌 3 Key Takeaways

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Objective & Hypothesis:In this study, a 44-DABP/PGE modified electrode was prepared by coating graphite pencil electrode (PGE) surface with 4,4'-diaminobenzophenone (44-DABP) molecule.
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Key Findings & Data:The coating process was carried out using the cyclic voltammetry (CV) method, in 1×10-4 mol L-1 44-DABP solution, with the number of 10 cycles between -1.5 V and +1.5 V with 0.1 Vs-1 scan rate.
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Conclusion & Impact:The determination of 2-NP in tap water by using the modified electrode has been successfully performed using the standard addition method with a good recovery and low relative standard deviation.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Elektropolimerleşme · modifikasyon · 2-nitrofenol

Abstract

In this study, a 44-DABP/PGE modified electrode was prepared by coating graphite pencil electrode (PGE) surface with 4,4'-diaminobenzophenone (44-DABP) molecule. The coating process was carried out using the cyclic voltammetry (CV) method, in 1×10-4 mol L-1 44-DABP solution, with the number of 10 cycles between -1.5 V and +1.5 V with 0.1 Vs-1 scan rate. The prepared 44-DABP/PGE electrode was characterized by electrochemical methods using CV and electrochemical impedance spectroscopy (EIS) techniques. In addition, the electrochemical behavior of 2-nitrophenol (2-NP) on the 44-DABP/PGE surface was investigated using CV and differential pulse voltammetry (DPV) techniques, and then the voltammetric determination was performed with the DPV technique. With the 44-DABP/PGE electrode, optimum conditions such as supporting electrolyte and pH suitable for 2-NP determination were determined. Under optimum conditions, it was determined that the current value of the reduction peak of 2-NP increased approximately 20 times by modifying the PGE electrode surface with 44-DABP. The working range for 2-NP with 44-DABP/PGE modified electrode was found as 0.75–15 µM and the detection limit (LOD) was 0.51 µM. It has been found that the 44-DABP/PGE electrode has good repeatability for the 2-NP determination. The determination of 2-NP in tap water by using the modified electrode has been successfully performed using the standard addition method with a good recovery and low relative standard deviation.

Özet

Bu çalışmada, 4,4’-diaminobenzofenon (44-DABP) molekülünün grafit kalem uç elektrot (PGE) yüzeyinde elektropolimerleşmesi ile 44-DABP/PGE modifiye elektrodu hazırlanmıştır. Elektropolimerleşme yöntemi ile kaplama işlemi, dönüşümlü voltametri (CV) yöntemi kullanılarak 1×10-4 molL-1 44-DABP çözeltisi içerisinde, 10 çevrim sayısı ile -1,5 V ile +1,5 V arasında 0,1 Vs-1 tarama hızıyla potansiyel taraması yapılarak gerçekleştirilmiştir. Hazırlanan 44-DABP/PGE elektrodu CV ve elektrokimyasal impedans spektroskopisi (EIS) teknikleri kullanılarak elektrokimyasal yöntemlerle karakterize edilmiştir. Ayrıca, 44-DABP/PGE yüzeyinde 2-nitrofenolün (2-NP) elektrokimyasal davranışı CV ve diferansiyel puls voltametrisi (DPV) teknikleri kullanılarak incelenmiş ve ardından DPV tekniği ile voltametrik tayini gerçekleştirildi. 44-DABP/PGE elektrodu ile 2-NP tayini için uygun olan destek elektrolit ve pH gibi optimum çalışma şartları belirlendi. Optimum şartlarda, PGE elektrot yüzeyinin 44-DABP filmi ile modifiye edilmesiyle, 2-NP’nin indirgenme pikinin akım değerinde yaklaşık 20 kat artış olduğu belirlendi. 44-DABP/PGE modifiye elektrot ile 2-NP için çalışma aralığı 0,75–15 µM ve gözlenebilme sınırı (LOD) 0,51 µM olarak belirlendi. 44-DABP/PGE elektrodunun 2-NP tayininde iyi bir tekrarlanabilirliğe sahip olduğu tespit edildi. Son olarak modifiye elektrotla, musluk suyunda standart ekleme yöntemi kullanarak iyi bir geri kazanım ve düşük bağıl standart sapma (BSS) değerleri ile 2-NP tayini başarıyla gerçekleştirilmiştir.

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Cite This Article

ÇAKICI, G. T., CALAM, T. T., ÇALIŞKAN, S. (2022). Investigation of Electrochemical Behavior and Voltammetric Determination of 2-Nitrophenol Using Modified Electrode Prepared by Electropolymerization of 4,4'-Diaminobenzophenone on Pencil Graphite Electrode Surface. Gazi Üniversitesi Fen Bilimleri Dergisi Part C: Tasarım ve Teknoloji, Cilt: 10 - Sayı: 1, 15–26. https://ajindex.com/articles/521841

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