Graphene Oxide Electroreduced onto Boron-Doped Diamond and Electrodecorated with Silver (Ag/GO/BDD) Electrode for Tetracycline Detection in Aqueous Solution

A new electrochemical sensor designed by modifying the commercial boron-doped diamond (BDD) electrode with graphene oxide (GO) reduced electrochemically and further electrodecorated with silver (Ag), named the Ag/GO/BDD electrode, was selected among a series of the BDD, GOelectroreduced onto BDD (GO/BDD) and silver electrodeposited onto BDD (Ag/BDD) electrodes for the detection of tetracycline (TC) in aqueous solution. The best results regarding the sensitivity of 46.6 µA·µM−1·cm−2 and the lowest limit of detection of 5 nM was achieved using square-wave voltammetry (SWV) operated at the step potential of 5 mV, modulation amplitude of 200 mV and the frequency of 10 Hz in alkaline medium. The application of the alkaline supporting electrolyte-based procedure is limited for water monitoring due to the presence of chloride that interferes with TC detection; however, it can be applied for quantitative determination of pharmaceutical formulations. 0.1 M Na2SO4 supporting electrolyte eliminated chloride interference and can be used for the application of Ag/GO/BDD in practical detection of TC in water.

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Sensitive Voltammetric Detection of Chloroquine Drug by Applying a Boron-Doped Diamond Electrode

C – Journal of Carbon Research ◽

10.3390/c6040075 ◽

2020 ◽

Vol 6 (4) ◽

pp. 75

Author(s):

Geiser Gabriel Oliveira ◽

Déborah Christine Azzi ◽

Tiago Almeida Silva ◽

Paulo Roberto de Oliveira ◽

Orlando Fatibello-Filho ◽

...

Keyword(s):

Square Wave Voltammetry ◽

Limit Of Detection ◽

Boron Doped Diamond ◽

Bdd Electrode ◽

Diamond Electrode ◽

Boron Doped ◽

Wave Voltammetry ◽

Boron Doped Diamond Electrode ◽

Analytical Curve ◽

Voltammetric Detection

In this research, a boron-doped diamond (BDD) electrode has been explored to detect the chloroquine drug. The electrochemical performance of BDD electrode towards the irreversible anodic response of chloroquine was investigated by subjecting this electrode to the cathodic (−0.5 A cm−2 by 180 s, generating a predominantly hydrogen-terminated surface) and anodic (+0.5 A cm−2 by 30 s, oxygen-terminated surface) pretreatments. The cathodically pretreated BDD electrode ensured a better-defined anodic peak and higher current intensity. Thus, by applying the cathodically pretreated BDD electrode and square-wave voltammetry (SWV), the analytical curve was linear from 0.01 to 0.25 µmol L−1 (correlation coefficient of 0.994), with sensitivity and limit of detection of 12.2 µA L µmol−1 and 2.0 nmol−1, respectively. This nanomolar limit of detection is the lowest recorded so far with modified and unmodified electrodes.

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Analytical determination of aliskiren in pharmaceutical formulations using boron-doped diamond electrodes

Analytical Methods ◽

10.1039/c5ay00911a ◽

2015 ◽

Vol 7 (18) ◽

pp. 7461-7466 ◽

Cited By ~ 4

Author(s):

Flávio H. O. Carvalho ◽

Alessandra Cintra ◽

Odonírio Abrahão ◽

Roseli A. S. Gomes ◽

Giancarlo R. Salazar-Banda ◽

...

Keyword(s):

Pharmaceutical Formulations ◽

Analytical Determination ◽

Diamond Electrodes ◽

Boron Doped Diamond ◽

Bdd Electrode ◽

Boron Doped

Electrooxidation of aliskiren on a BDD electrode.

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Electrochemical oxidation and electroanalysis of paracetamol on a boron-doped diamond anode material in aqueous electrolytes

Journal of Electrochemical Science and Engineering ◽

10.5599/jese.932 ◽

2021 ◽

Author(s):

Kouakou Etienne Kouadio ◽

Ollo Kambiré ◽

Konan Sylvestre Koffi ◽

Lassine Ouattara

Keyword(s):

Electrolyte Solution ◽

Current Density ◽

Supporting Electrolyte ◽

Current Intensity ◽

Applied Current ◽

Boron Doped Diamond ◽

Preparative Electrolysis ◽

Applied Current Density ◽

Bdd Electrode ◽

Boron Doped

Electrochemical oxidation of paracetamol on boron-doped diamond (BDD) anode has been studied by cyclic voltammetry and preparative electrolysis. Quantification of paracetamol during electrolysis has been mainly realized by differential pulse voltammetry technique in the Britton-Robinson buffer solutions used as the supporting electrolyte. Various parameters such as current intensity, nature of the supporting electrolyte, temperature, and initial concentration of paracetamol have been investigated. The electrochemical characterization by the outer sphere Fe(III)/Fe(II) redox couple has also been performed, showing the metallic character of BDD electrode. The obtained linear dependency of the oxidation peak current intensity and paracetamol concentration indicates that BDD electrode can be used as an electrochemical sensor for the detection and quantification of paracetamol. The investigation of paracetamol degradation during preparative electrolysis showed that: (i) the degradation rate of paracetamol increases with increase of current intensity applied; (ii) for the initial concentrations of 10, 6 and 1 mM of paracetamol, its oxidation rate reaches 60, 78 and 99 % respectively, after 1 h of electrolysis in 0.3 M H2SO4 (pH 0.6) at applied current density of 70 mA cm-2; (iii) at temperatures of electrolyte solution of 28, 55 and 75 °C, paracetamol oxidation rate reached 85, 92 and 97 % respectively, after 2 h at applied current density of 70 mA cm2. From the investigation of the effect of pH value of electrolyte solution, it appears that oxidation of paracetamol is more favorable in acidic solution at pH 3 than solutions of higher pH values.

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Fabrication and application of boron doped diamond BDD electrode in olive mill wastewater treatment in Jordan

Journal of Water Reuse and Desalination ◽

10.2166/wrd.2016.062 ◽

2016 ◽

Vol 7 (4) ◽

pp. 502-510 ◽

Cited By ~ 9

Author(s):

Inshad Jum'h ◽

Arwa Abdelhay ◽

Hussein Al-Taani ◽

Ahmad Telfah ◽

Mohammad Alnaief ◽

...

Keyword(s):

Supporting Electrolyte ◽

Oxygen Demand ◽

Chemical Vapor ◽

Electrochemical Reactor ◽

Olive Mill Wastewater ◽

Boron Doped Diamond ◽

Ph Variation ◽

Bdd Electrode ◽

Boron Doped ◽

Olive Mill

A boron doped diamond (BDD) electrode was employed in an electrochemical reactor to oxidize the phenolic content of Jordanian olive mill wastewater. The BDD anode was fabricated using hot filament chemical vapor deposition on niobium and the morphology of the BDD electrode was characterized using an atomic force microscope. Then, electrolysis batch runs were carried out at laboratory scale to test the effect of different process parameters, namely, initial chemical oxygen demand (COD) load (72.9, 33.8, and 0.18 g/L), the addition of Na2SO4 as supporting electrolyte, and adding NaCl along with Na2SO4, on the efficiency of the treatment process. The results were reported in terms of COD, color and turbidity removal, and pH variation. The experiments revealed that electrochemical oxidation using BDD significantly reduced the COD by 85% with no supporting electrolytes. It was observed that adding Na2SO4 with NaCl brought the COD removal to higher than 90% after 7 hours of treatment for COD loads of 72.9 and 33.8 g/L, and after 2 hours for a COD load of 0.18 g/L. Likewise, color was completely removed regardless of the initial COD load. The turbidity for samples with 72.9 and 33.8 g/L as COD load reached a minimal value of 2.5 and 1 NTU respectively.

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Photocatalytically-assisted electrochemical degradation of p-aminophenol in aqueous solutions using zeolite-supported TiO2 catalyst

Chemical Papers ◽

10.2478/s11696-011-0009-2 ◽

2011 ◽

Vol 65 (3) ◽

Cited By ~ 8

Author(s):

Cornelia Ratiu ◽

Florica Manea ◽

Carmen Lazau ◽

Corina Orha ◽

Georgeta Burtica ◽

...

Keyword(s):

Oxygen Evolution ◽

Supporting Electrolyte ◽

Degradation Process ◽

Open Circuit ◽

Electrochemical Degradation ◽

Boron Doped Diamond ◽

Tio2 Catalyst ◽

Bdd Electrode ◽

Boron Doped ◽

Supported Tio2

AbstractThis paper reports the results of an investigation into enhancement of the electrochemical oxidation of p-aminophenol (4-AP) in an aqueous solution with a boron-doped diamond (BDD) electrode, assisted by photocatalysis using a zeolite-supported TiO2 (Z-TiO2) catalyst. The BDD electrode was characterised in 0.1 M Na2SO4-supporting electrolyte and the presence of 4-AP by open-circuit potential behaviour (OCP) and cyclic voltammetry (CV). The electrode behaviour was investigated in the dark and following UV irradiation and in the absence/presence of the Z-TiO2 catalyst. The electro-oxidation process was carried out using chronoamperometry (CA) and multiple-pulsed amperometry (MPA) at the selected potential under potentiostatic conditions. The electrochemical degradation process of 4-AP on the BDD electrode was improved by the application of a pulsed potential, which allowed both in-situ electrochemical cleaning of the electrode and indirect oxidation of 4-AP by oxygen evolution. The application of photocatalysis using Z-TiO2 in the 4-AP electrochemical degradation exhibited an enhanced effect when the anodic potential was set at +1.25 V vs. Ag/AgCl in the water stability region, close to the oxygen evolution potential.

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Copper-Modified Boron-Doped Diamond (Cu/Bdd) Electrode for the Electrochemical Detection of Paclitaxel and Oxaliplatin in Aqueous Solutions

Revista de Chimie ◽

10.37358/rc.19.12.7799 ◽

2020 ◽

Vol 70 (12) ◽

pp. 4605-4610

Keyword(s):

Electrochemical Detection ◽

Supporting Electrolyte ◽

Boron Doped Diamond ◽

Easy Method ◽

Potential Value ◽

Bdd Electrode ◽

Diamond Electrode ◽

Boron Doped ◽

Boron Doped Diamond Electrode ◽

Electrocatalytic Effect

The aim of this study was to obtain a simple and fast modified electrode for the detection of paclitaxel (PCX) and oxaliplatin (OXA) in aqueous solution. PCX and OXA are some of the most used cytostatic drugs suitable to treat various types of cancer, e.g., ovarian, breast, lung, cervical, pancreatic, Kaposi’s sarcoma. The development of an easy method for its determination is required for both the dosage in cancer therapy and due its potential presence in environment and especially, in water samples. Boron doped diamond (BDD) electrode was electrochemically modified with copper (Cu) by chronoamperometry (CA) operated under optimized conditions of -0.75 V/SCE potential level for 120 minutes. Copper-modified boron-doped diamond (Cu/BDD) exhibited the electrocatalytic effect towards the paclitaxel and oxaliplatin oxidation, allowing their detection in 0.1 M NaOH supporting electrolyte. The limiting anodic current was noticed at the potential value of +0.75 V/SCE that increased linearly with PCX concentration, and at the potential value of + 0.6V/SCE for the oxaliplatin. Some mechanical aspects related to the PCX oxidation at Cu/BDD electrode in 0.1 M NaOH supporting electrolyte were determined using cyclic voltammetry (CV) recorded at various scan rates. CV was based on compounds detection and achieved the sensitivity of 0.65 μA/µM for oxaliplatin and respective, 5.47 μA/µM for paclitaxel. Keywords: copper, electrochemical detection, modified boron-doped diamond electrode paclitaxel, oxaliplatin

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Electrochemical Transduction at Modified Boron Doped Diamond Interfaces

Journal of Nano Research ◽

10.4028/www.scientific.net/jnanor.44.51 ◽

2016 ◽

Vol 44 ◽

pp. 51-62

Author(s):

Lisebo Phelane ◽

Siyabulela Hamnca ◽

Priscilla Gloria Lorraine Baker ◽

Emmanuel Iheanyichukwu Iwuoha

Keyword(s):

Electron Transfer ◽

Graphene Oxide ◽

Electrochemical Impedance ◽

Material Synthesis ◽

Boron Doped Diamond ◽

Bdd Electrode ◽

Dimethyl Acetamide ◽

Boron Doped ◽

Wave Voltammetry ◽

Complex Architectures

Innovation in nanoscience depends fully on the ability to synthesize nanomaterials as well as to assemble them efficiently into complex architectures. The discovery of graphene and graphene polymer nanocomposites is playing a key role in modern nanoscience and nanotechnology. Graphene oxide (GO), is a derivative of graphene obtained by the use of strong oxidizing agents to obtain graphene oxide, a nonconductive hydrophilic carbon material. Synthesis of graphene oxide was performed using the Hummers method. Graphene oxide was integrated into the polysulfone (PSF) matrix to form polysulfone/graphene oxide nanocomposite. Polysulfone casting suspension was prepared by dissolving polysulfone in N,N-dimethyl acetamide. The polymer composites consisted of homogeneously blended polysulfone and graphene oxide casting solutions and drop coated onto boron-doped diamond electrodes (BDD). Interfacial electrochemical dynamics were characterised using cyclic voltammetry (CV), square wave voltammetry (SWV), and electrochemical impedance spectroscopy (EIS). Scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FTIR) and Raman spectroscopy were used to study the morphology and structure of the prepared materials. Modifying with polysulfone blocks electron transfer in the redox reaction of K3Fe(CN)6. PSF /GO enhances electron transfer even when compared to bare BDD. The diffusion coefficient and sensitivity for PSF-GO/BDD electrode was calculated to be 2.660 x10-4 cm2 s-1 and 6.7587 x10-6 mV s-1 / A.

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