Porous Copper‐Modified Graphite Pencil Electrode for the Amperometric Detection of 4‐Nitrophenol

Kawde, Abdel‐Nasser; Aziz, Md. Abdul

doi:10.1002/elan.201400281

Cited by 40 publications

(19 citation statements)

References 39 publications

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“…A variety of efforts have been applied toward preventing electrode surface fouling by phenols. For example, glassy carbon electrodes 32, boron‐doped diamond electrodes 33, and porous copper‐modified graphite pencil electrodes 34 have been tested in electrochemical phenol detection devices. A new approach to determining the presence or quantity of phenol in a water sample has been developed.…”

Section: Introductionmentioning

confidence: 99%

Open‐circuit Electrochemical Polymerization for the Sensitive Detection of Phenols

Rana

Kawde

2015

Electroanalysis

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We report on a novel electrochemical method for electro‐polymerizing phenols under open‐circuit conditions. The method developed here is simple, sensitive, rapid, and overcomes the well‐documented surface fouling of carbon electrodes by phenols. A pre‐charged disposable graphite pencil electrode (pCGPE) was found to be useful for both phenol sampling and sensing. The pCGPE was prepared by charging the surface of a graphite pencil electrode by applying a cyclic voltammetry electrochemical treatment in a NaOH solution. Phenol sampling was accomplished by immersing the pCGPE into a phenol solution. This method permitted phenol detection with a detection limit of 4.17 nM (0.39 ppt).

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Section: Introductionmentioning

confidence: 99%

Open‐circuit Electrochemical Polymerization for the Sensitive Detection of Phenols

Rana

Kawde

2015

Electroanalysis

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“…The relatively small change in the peak current from the first cycle to the second may have been due the stabilization of the electrode. This type of phenomenon has been observed for other nano/micro‐structured modified electrodes . We compared the electrocatalytic properties of NSCE 850 and the glassy carbon electrode (GCE) by also recording CVs using the GCE.…”

Section: Resultsmentioning

confidence: 99%

A Simple and Direct Preparation of a Substrate-Free Interconnected Nanostructured Carbon Electrode from Date Palm Leaflets for Detecting Hydroquinone

et al. 2017

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Preparation of carbon nanomaterials from agro-waste is a promising research area due to the low cost and high availability of agro-waste and the unique physical, chemical and electrochemical properties of agro-waste-derived carbon. Such prepared nanomaterials have been used as electrode materials after immobilizing them on other solid substrates such as glassy carbon, Au, and Pt electrodes. However, this immobilizing step is tedious and the substrate electrodes are expensive. Here we present a simple pyrolytic preparation of a substrate-free electrode consisting of interconnected nanostructured carbon from date palm leaflets for direct use as an inexpensive electrode material. The prepared nanostructure was characterized using field emission scanning electron micro-scopy, energy dispersive spectroscopy, X-ray photoelectron spectroscopy, Raman spectroscopy, and cyclic voltammetry. The cyclic voltammetry studies revealed the electrocatalytic properties of the prepared nanostructured electrode toward K 4 [Fe 4 (CN) 6 ] and hydroquinone (HQ) to be superior to those of the commonly employed glassy carbon electrode. The prepared nanostructured carbon electrode was deployed using amperometry to sensitively detect HQ, and showed a detection limit for HQ of 6.1 mM. This electrode was highly stable and selective for HQ in the presence of several test interferents. The developed electrode may thus be considered as a promising tool for sensing HQ.[a] Dr.

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“…As can be seen in Table 4, the linearity range is wider than that for the DP voltammetric determination of nitrofurantoin (NF) at a mercury meniscus modified silver solid amalgam electrode (2-100 µ M), 36 determination of 2-amino-6-nitrobenzothiazole (ANBT) at a silver solid amalgam electrode modified by a microcrystalline natural graphite polystyrene composite film (0.2-10 µ M), 33 amperometric detection of nitrophenol (NP) at a porous copper modified PGE (50-850 µ M), 38 and cyclic voltammetric determination of trinitrotoluene (TNT) (2.5-40 and 40-120 mg L −1 ) and dinitrotoluene (DNT) (2-40 and 40-140 mg L −1 ) . 30,31 The sensitivity of the proposed method is higher than that of determination of NF, 36 ANBT and 5-nitrobenzimidazole (5-NBIA), 33 NP, 38 TNT, and DNT. 30,31 Moreover, it is comparable to that obtained with determination of niclosamide at a PGE 39 and determination of aromatic nitro compounds (nitrobenzene, TNT, and DNT) at a Pd nanoparticle graphene modified GCE.…”

Section: Differential Pulse Voltammetric Determination Of Nitro Benzamentioning

confidence: 99%

Electrochemical behavior and voltammetric determination of some nitro-substituted benzamide compounds

2018

Turk J Chem

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Voltammetric behaviors of six nitro-substituted benzamides, which are potential prodrug candidates for nitroreductase-based cancer therapy, were investigated using cyclic voltammetry (CV) and differential pulse voltammetry (DPV). The electrochemical behavior of aromatic nitro (ArNO 2) compounds by CV indicates that compounds involve various reduction/oxidation steps including the formation of aromatic nitro radical, nitroso, hydroxylamine, and amine groups. Applicability of the voltammetric determination of these prodrug candidates was studied by recording their DPVs, carried out in mixed media (Britton Robinson buffer solution + DMF) at various pH values on a pencil graphite electrode (PGE). Results show that the PGE can offer a disposable, low-cost, and sensitive electrochemical determination method for identifying nitro benzamide compounds. Under the experimental conditions, the PGE had a linear response range from 0.5 to 100 µ M 4-nitro-N -(2-nitrophenyl)benzamide (compound 2). This voltammetric procedure indicates that nitro-substituted benzamide drugs can be successfully determined in pharmaceutical samples.

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Porous Copper‐Modified Graphite Pencil Electrode for the Amperometric Detection of 4‐Nitrophenol

Cited by 40 publications

References 39 publications

Open‐circuit Electrochemical Polymerization for the Sensitive Detection of Phenols

Open‐circuit Electrochemical Polymerization for the Sensitive Detection of Phenols

A Simple and Direct Preparation of a Substrate-Free Interconnected Nanostructured Carbon Electrode from Date Palm Leaflets for Detecting Hydroquinone

Electrochemical behavior and voltammetric determination of some nitro-substituted benzamide compounds

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