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Ahmed YM, Eldin MA, Galal A, Atta NF. Electrochemical sensor based on PEDOT/CNTs-graphene oxide for simultaneous determination of hazardous hydroquinone, catechol, and nitrite in real water samples. Sci Rep 2024; 14:5654. [PMID: 38454022 PMCID: PMC10920748 DOI: 10.1038/s41598-024-54683-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Accepted: 02/15/2024] [Indexed: 03/09/2024] Open
Abstract
Hydroquinone (HQ), catechol (CC) and nitrite (NT) are considered aquatic environmental pollutants. They are highly toxic, harm humans' health, and damage the environment. Thus, in the present work we introduce a simple and efficient electrochemical sensor for determination of HQ, CC, and NT simultaneously in wastewater sample. The sensor is fabricated by modifying the surface of a glassy carbon electrode (GCE) by two successive thin films from poly(3,4-ethylenedioxythiophene) (PEDOT) and a mixture of carbon nanotubes-graphene oxide (CNT-GRO). Under optimized conditions the HQ, CC, and NT are successfully detected simultaneously in wastewater sample with changing their concentrations in the ranges (0.04 → 100 µM), (0.01 → 100 µM) and (0.05 → 120 µM), the detection limits are 8.5 nM, 3.8 nM and 6.1 nM, respectively. Good potential peak separations: 117 mV and 585 mV are obtained between the HQ-CC, and CC-NT. The sensor has an excellent catalytic capability toward the oxidation of HQ, CC, and NT due to good synergism between its composite components: PEDOT, GRO and CNTs. The features of the sensor are large active surface area, good electrical conductivity, perfect storage stability, good reproducibility, anti-interference capability and accepted recovery rate for HQ, CC, and NT determination in wastewater sample.
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Affiliation(s)
- Yousef M Ahmed
- Chemistry Department, Faculty of Science, Cairo University, Giza, 12613, Egypt
| | - Mahmoud A Eldin
- Chemistry Department, Faculty of Science, Cairo University, Giza, 12613, Egypt
| | - Ahmed Galal
- Chemistry Department, Faculty of Science, Cairo University, Giza, 12613, Egypt
| | - Nada F Atta
- Chemistry Department, Faculty of Science, Cairo University, Giza, 12613, Egypt.
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Ahmed YM, Eldin MA, Galal A, Atta NF. Electrochemical sensor for simultaneous determination of antiviral favipiravir drug, paracetamol and vitamin C based on host-guest inclusion complex of β-CD/CNTs nanocomposite. Sci Rep 2023; 13:19910. [PMID: 37963918 PMCID: PMC10645768 DOI: 10.1038/s41598-023-45353-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Accepted: 10/18/2023] [Indexed: 11/16/2023] Open
Abstract
Favipiravir (FVI) is extensively used as an effective medication against several diverse infectious RNA viruses. It is widely administered as an anti-influenza drug. Combination therapy formed from FVI, paracetamol (PAR) and vitamin C (VC) is needed for treating patients diseased by RNA viruses. Thus, an efficient electrochemical sensor is developed for detecting FVI in human serum samples. The sensor is fabricated by casting a thin layer of carbon nanotubes (CNTs) over a glassy carbon (GC) electrode surface followed by electrodeposition of another layer of β-cyclodextrin (β-CD). Under optimized conditions, the sensor shows excellent catalytic effect for FVI, PAR and VC oxidation in the concentration ranges (0.08 µM → 80 µM), (0.08 µM → 50 µM) and (0.8 µM → 80 µM) with low detection limits of 0.011 μM, 0.042 μM and 0.21 μM, respectively. The combined effect of host-guest interaction ability of β-CD for the drugs, and a large conductive surface area of CNTs improves the sensing performance of the electrode. The sensor exhibits stable response over 4 weeks, good reproducibility, and insignificant interference from common species present in serum samples. The reliability of using the sensor in serum samples shows good recovery of FVI, PAR and VC.
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Affiliation(s)
- Yousef M Ahmed
- Chemistry Department, Faculty of Science, Cairo University, Giza, 12613, Egypt
| | - Mahmoud A Eldin
- Chemistry Department, Faculty of Science, Cairo University, Giza, 12613, Egypt
| | - Ahmed Galal
- Chemistry Department, Faculty of Science, Cairo University, Giza, 12613, Egypt
| | - Nada F Atta
- Chemistry Department, Faculty of Science, Cairo University, Giza, 12613, Egypt.
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Ahmed YM, Eldin MA, Galal A, Atta NF. Electrochemical sensor for simultaneous determination of trifluoperazine and dopamine in human serum based on graphene oxide-carbon nanotubes/iron-nickel nanoparticles. RSC Adv 2023; 13:25209-25217. [PMID: 37622009 PMCID: PMC10445055 DOI: 10.1039/d3ra04334g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Accepted: 08/15/2023] [Indexed: 08/26/2023] Open
Abstract
Trifluoperazine (TFLP) is an important psychiatric medication that balances the dopamine (DA) level in the brain for patients suffering from neurological disorder diseases. An efficient electrochemical sensor is developed for detecting TFLP in real human serum samples. The sensor is fabricated by casting the GC surface with two consecutive thin layers, namely a graphene oxide-carbon nanotubes mixture (GRO-CNT), and iron-nickel nanoparticles (Fe-Ni). The diffusion-controlled oxidation process of TFLP at the composite surface includes one electron transfer process. Under optimized conditions, the sensor in human serum shows excellent catalytic effect for simultaneous determination of TFLP and dopamine (DA) in the same concentration range (0.5 μM to 18 μM) with low detection limits of 0.13 μM and 0.32 μM respectively. The combined effect of a large conductive surface area and the excellent catalytic activity of the nanocomposite improves the sensor's performance. The sensor exhibits a stable current response over four weeks, excellent reproducibility, and insignificant interference from common species present in human serum samples. The reliability test of using the sensor in serum samples shows good recovery of TFLP.
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Affiliation(s)
- Yousef M Ahmed
- Chemistry Department, Faculty of Science, Cairo University 12613 Giza Egypt
| | - Mahmoud A Eldin
- Chemistry Department, Faculty of Science, Cairo University 12613 Giza Egypt
| | - Ahmed Galal
- Chemistry Department, Faculty of Science, Cairo University 12613 Giza Egypt
| | - Nada F Atta
- Chemistry Department, Faculty of Science, Cairo University 12613 Giza Egypt
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Atta NF, Galal A, El-Gohary AR. Electrochemical sensing of dobutamine, paracetamol, amlodipine, and daclatasvir in serum based on thiourea SAMs over nano-gold particles-CNTs composite. NEW J CHEM 2022. [DOI: 10.1039/d2nj01822e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report in this work a one-step approach for the formation of self-assembled monolayers (SAMs) from thiourea (TU) over gold nanoparticles dispersed in carbon nanotubes (CNTs-Aunano). The fabrication of the...
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Atta NF, Galal A, El-Gohary AR. Novel designed electrochemical sensor for simultaneous determination of linezolid and meropenem pneumonia drugs. J Electroanal Chem (Lausanne) 2021. [DOI: 10.1016/j.jelechem.2021.115814] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Atta NF, Galal A, El-Gohary AR. Novel method of one pot preparation of thiourea self-assembled monolayers over gold nanoparticles-carbon nanotubes composite for sensing application of phenolic compounds. J Electroanal Chem (Lausanne) 2021. [DOI: 10.1016/j.jelechem.2021.115795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Atta NF, Abdo GG, Elzatahry A, Galal A, Hassan SH. Designed electrochemical sensor based on metallocene modified conducting polymer composite for effective determination of tramadol in real samples. CAN J CHEM 2021. [DOI: 10.1139/cjc-2020-0199] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A novel composite for the electrochemical sensing of tramadol (Tr) was developed by the inclusion of a metallocene mediator between two layers of conducting poly(3,4-ethylenedioxythiophene) (PEDOT) polymer, in the presence of sodium dodecyl sulfate (SDS), i.e., P/mediator/P⋯SDS. Three charge transfer mediators were evaluated: ferrocene carboxylic acid (FC1), ferrocene (FC2), and cobaltocene (CC) for Tr electrocatalytic oxidation. The FC1 charge mediator showed a relatively higher current response that was assisted by the electronic conduction of the polymer film. Moreover, SDS presented a great impact, resulting in the enhancement of the preconcentration and (or) accumulation of Tr ions at the interface, leading to faster electron transfer. In addition, the practical application of the proposed FC1 composite for the determination of Tr in real urine and serum samples was successfully achieved with adequate recovery results. Very low detection limits of 18.6 nM and 16 nM in the linear dynamic ranges of 7–300 µM and 5–280 µM, respectively, were obtained at the proposed sensor. Furthermore, the simultaneous determination of Tr with common interfering species, paracetamol (APAP), morphine (MO), dopamine (DA), ascorbic acid (AA) and uric acid (UA), proved excellent, with good resolution and large potential peaks separation. The excellent characteristics of the proposed composite such as high reproducibility, good sensitivity, selectivity, anti-interference ability, and good stability enhanced its application for determination of other narcotic drugs.
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Affiliation(s)
- Nada F. Atta
- Department of Chemistry, Faculty of Science, Cairo University, 12613, Giza, Egypt
| | - Ghada G. Abdo
- College of Pharmacy, Qatar University, P.O. Box, Doha 2713, Qatar
| | - Ahmed Elzatahry
- Materials Science and Technology Program, College of Arts and Sciences, Qatar University, Doha, 2713, Qatar
| | - Ahmed Galal
- Department of Chemistry, Faculty of Science, Cairo University, 12613, Giza, Egypt
| | - Samar H. Hassan
- Department of Chemistry, Faculty of Science, Cairo University, 12613, Giza, Egypt
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Atta NF, Galal A, Ahmed YM, Abdelkader MG. Development of an Innovative Nitrite Sensing Platform Based on the Construction of an Electrochemical Composite Sensor of Polymer Coated CNTs and Decorated with Magnetite Nanoparticles. ELECTROANAL 2021. [DOI: 10.1002/elan.202060598] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Nada F. Atta
- Chemistry Department, Faculty of Science Cairo University 12613 Giza Egypt
| | - Ahmed Galal
- Chemistry Department, Faculty of Science Cairo University 12613 Giza Egypt
| | - Yousef M. Ahmed
- Chemistry Department, Faculty of Science Cairo University 12613 Giza Egypt
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Atta NF, Galal A, Ahmed YM, Abdelkader MG. Host guest inclusion complex/polymer-CNT composite for efficient determination of uric acid in presence of interfering species. J Electroanal Chem (Lausanne) 2021. [DOI: 10.1016/j.jelechem.2021.115012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Atta NF, Abdel Gawad SA, Galal A, Razik AA, El-Gohary AR. Efficient electrochemical sensor for determination of H2O2 in human serum based on nano iron‑nickel alloy/carbon nanotubes/ionic liquid crystal composite. J Electroanal Chem (Lausanne) 2021. [DOI: 10.1016/j.jelechem.2020.114953] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Galal A, Hassan HK, Atta NF. Voltammetric Study of the Electrocatalytic Oxidation of Formaldehyde on Pt−Pd Co‐catalyst Supported on Reduced Graphene Oxide
¶. ELECTROANAL 2020. [DOI: 10.1002/elan.202060263] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ahmed Galal
- Department of Chemistry Faculty of Science Cairo University 12613 Giza Egypt
| | - Hagar K. Hassan
- Department of Chemistry Faculty of Science Cairo University 12613 Giza Egypt
| | - Nada F. Atta
- Department of Chemistry Faculty of Science Cairo University 12613 Giza Egypt
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Atta NF, Galal A, Hassan SH. Comparative Study of Metallocene Modified Gold Nanoparticles Polymer Electrodes for Effective Determination of Dopamine. ELECTROANAL 2020. [DOI: 10.1002/elan.202060309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Nada F. Atta
- Department of Chemistry Faculty of Science Cairo University 12613 Giza Egypt
| | - Ahmed Galal
- Department of Chemistry Faculty of Science Cairo University 12613 Giza Egypt
| | - Samar H. Hassan
- Department of Chemistry Faculty of Science Cairo University 12613 Giza Egypt
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Atta NF, Galal A, El-Gohary ARM. New insight for simultaneous determination of hazardous di-hydroxybenzene isomers at crown ether modified polymer/carbon nanotubes composite sensor. J Hazard Mater 2020; 388:122038. [PMID: 31968302 DOI: 10.1016/j.jhazmat.2020.122038] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 12/31/2019] [Accepted: 01/06/2020] [Indexed: 06/10/2023]
Abstract
A new insight is presented in the fabrication of a reliable electrochemical sensor for di-hydroxybenzene isomers; hydroquinone (HQ), catechol (CC), and resorcinol (RC) which have been considered as common pollutants in environment and water samples. The sensor is based on modifying the glassy carbon electrode (GC) with successive layers, multi-walled carbon nanotubes (CNT), poly-hydroquinone (PHQ) and benzo-12-crown-4 (CE); GC/CNT/PHQ/CE. CE is introduced for the first time as a receptor for the di-hydroxybenzene isomers based on host-guest size matching. Other cycling compound with different cavity diameter as β-cyclodextrin (β-CD) (6.0-6.5 Å) was examined displaying lower current responses. CE exhibited "fit" cavity size (1.20-1.50 Å). Thus, the inclusion complexes formed between β-CD and di-hydroxybenzene isomers are less stable. The layered sensor showed highly electro-catalytic activity for simultaneous determination of isomers; HQ, CC and RC in the concentration ranges of 0.03-100 μM, 0.01-100 μM and 0.05-100 μM with low detection limit values of 0.156 nM, 0.118 nM and 0.427 nM, respectively. The practical impact of the sensor was illustrated for determination of di-hydroxybenzene isomers in real water matrices from two different sources. Moreover, anti-interference ability of the layered sensor for determination of di-hydroxybenzene isomers was successfully achieved in presence of common interfering ions and organic pollutants.
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Affiliation(s)
- Nada F Atta
- Chemistry Department, Faculty of Science, Cairo University, 12613 Giza, Egypt.
| | - Ahmed Galal
- Chemistry Department, Faculty of Science, Cairo University, 12613 Giza, Egypt
| | - Asmaa R M El-Gohary
- Chemistry Department, Faculty of Science, Cairo University, 12613 Giza, Egypt
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Atta NF, Galal A, El-Gohary AR. Crown ether modified poly(hydroquinone)/carbon nanotubes based electrochemical sensor for simultaneous determination of levodopa, uric acid, tyrosine and ascorbic acid in biological fluids. J Electroanal Chem (Lausanne) 2020. [DOI: 10.1016/j.jelechem.2020.114032] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Atta NF, Galal A, El-Said DM. Electrochemical sensor based on incorporation of gold nanoparticles, ionic liquid crystal, and β-cyclodextrin into carbon paste composite for ultra-sensitive determination of norepinephrine in real samples. CAN J CHEM 2019. [DOI: 10.1139/cjc-2019-0025] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A novel, reliable electrochemical sensor is fabricated for direct and sensitive determination of norepinephrine (NE) based on gold nanoparticles, ionic liquid crystal, and β-cyclodextrin modified carbon paste electrode, namely AuILCCDCPE. The ionic liquid crystal (ILC) played a key role in improving the current response of electro-oxidation of NE compared with other ionic liquids modified electrodes. The ILC increased the ionic conductivity of the paste and formed noncovalent interactions with both host (CD) and guest (NE) compounds. The solid state structure of the ILC helped in the formation of ordered films in the paste. Furthermore, CD and Au nanoparticles raised the stability and the electrocatalytic ability of the proposed sensor. Under optimized conditions, the fabricated electrochemical sensor showed a good electrochemical response towards NE in human urine in the linear dynamic ranges of 0.05–10 μmol/L and 20–300 μmol/L with a correlation coefficient of 0.999 and detection limit of 3.12 × 10−9 mol/L in the low concentration range. The practical analytical performance of the sensor was attained for determination of NE in real samples with satisfied recovery results. This sensor has great ability to be extended for electrochemical applications in assays of other drugs.
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Affiliation(s)
- Nada F. Atta
- Chemistry Department, Faculty of Science, Cairo University, Giza 12613, Egypt
- Chemistry Department, Faculty of Science, Cairo University, Giza 12613, Egypt
| | - Ahmed Galal
- Chemistry Department, Faculty of Science, Cairo University, Giza 12613, Egypt
- Chemistry Department, Faculty of Science, Cairo University, Giza 12613, Egypt
| | - Dalia M. El-Said
- Chemistry Department, Faculty of Science, Cairo University, Giza 12613, Egypt
- Chemistry Department, Faculty of Science, Cairo University, Giza 12613, Egypt
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Atta NF, Galal A, El-Said DM. Novel Design of a Layered Electrochemical Dopamine Sensor in Real Samples Based on Gold Nanoparticles/β-Cyclodextrin/Nafion-Modified Gold Electrode. ACS Omega 2019; 4:17947-17955. [PMID: 31720498 PMCID: PMC6843716 DOI: 10.1021/acsomega.9b01222] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2019] [Accepted: 09/23/2019] [Indexed: 06/01/2023]
Abstract
Change in the level of dopamine (DA) concentration in the human body causes critical diseases such as schizophrenia and Parkinson's disease. Therefore, the determination of DA concentration and monitoring its level in human body fluids is of great importance. An electrochemical sensor based on modification of the gold electrode surface with Nafion (NF), β-cyclodextrin (CD), and gold nanoparticles (AuNPs) was fabricated for the determination of DA in biological fluids. Combined impact of all the modifiers enhances the catalytic activity of the sensor. Gold nanoparticles increase the surface area of the sensor and enhance the electron transfer rate. CD plays a main role in enhancing the accumulation of protonated DA and forming stable complexes via electrostatic interactions and hydrogen bond formation. In addition, extra preconcentration of positively charged DA is achieved through ionic selectivity of NF. High electrocatalytic activity was achieved using the modified sensor for determination of DA in real urine samples in a wide concentration range, 0.05-280 μM with a low detection limit of 0.6 nM in the small linear dynamic range, 0.05-20 μM. Furthermore, common overlapped oxidation peaks of DA in presence of biologically interfering compounds at the gold electrode were resolved by using the modified sensor. Excellent recovery results were obtained using the proposed method for determination of DA in real urine samples.
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Galal A, Hassan HK, Atta NF, Abdel-Mageed AM, Jacob T. Synthesis, structural and morphological characterizations of nano-Ru-based perovskites/RGO composites. Sci Rep 2019; 9:7948. [PMID: 31138882 PMCID: PMC6538664 DOI: 10.1038/s41598-019-43726-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Accepted: 04/23/2019] [Indexed: 11/25/2022] Open
Abstract
Highly-dispersed Ru-based perovskites supported on reduced graphene oxide (A-RG) nanocomposites are prepared using different A-metal salts (Sr(NO3)2, Ba(NO3)2 and Ca(NO3)2). The procedure is based on a redox reaction between the metal precursors and graphene oxide (GO) using two different routes of reaction initiation: through thermal heating or by microwave-assisted heating. The resulting nanocomposites do not require further calcination, making this method less energy-demanding. In addition, no additional chemical reagents are required for either the GO reduction or the metal precursor oxidation, leading to an overall simple and direct synthesis method. The structure and morphology of the as-prepared A-RG (non-calcined) nanocomposites are characterized using various structural analyses including XRD, XPS, SEM/EDX and HR-TEM. Changing metal A in the perovskite as well as the “activation method” resulted in significant structural and morphological changes of the formed composites. SrRuO3 and BaRuO3 in combination with RuO2 are obtained using a conventional combustion method, while SrRuO3 (~1 nm size) in combination with Ru nanoparticles are successfully prepared using microwave irradiation. For the first time, a microwave-assisted synthesis method (without calcination) was used to form crystalline nano-CaRuO3.
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Affiliation(s)
- Ahmed Galal
- Department of Chemistry, Faculty of Science, Cairo University, 12613, Giza, Egypt.
| | - Hagar K Hassan
- Department of Chemistry, Faculty of Science, Cairo University, 12613, Giza, Egypt
| | - Nada F Atta
- Department of Chemistry, Faculty of Science, Cairo University, 12613, Giza, Egypt
| | - Ali M Abdel-Mageed
- Department of Chemistry, Faculty of Science, Cairo University, 12613, Giza, Egypt.,Institute of Surface Chemistry and Catalysis, Ulm University, 89069, Ulm, Germany
| | - Timo Jacob
- Institute of Electrochemistry, Ulm University, 89081, Ulm, Germany.,Helmholtz-Institute-Ulm (HIU), Helmholtzstr. 11, 89081, Ulm, Germany.,Karlsruhe Institute of Technology (KIT), P.O. Box 3640, 76021, Karlsruhe, Germany
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Atta NF, Galal A, Hassan SH. Ultrasensitive determination of nalbuphine and tramadol narcotic analgesic drugs for postoperative pain relief using nano-cobalt oxide/ionic liquid crystal/carbon nanotubes-based electrochemical sensor. J Electroanal Chem (Lausanne) 2019. [DOI: 10.1016/j.jelechem.2019.03.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Galal A, Hassan HK, Atta NF, Jacob T. Energy and cost-efficient nano-Ru-based perovskites/RGO composites for application in high performance supercapacitors. J Colloid Interface Sci 2019; 538:578-586. [PMID: 30553090 DOI: 10.1016/j.jcis.2018.12.018] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2018] [Revised: 12/01/2018] [Accepted: 12/04/2018] [Indexed: 10/27/2022]
Abstract
Nano-Ru-based perovskites RGO are prepared simultaneously in presence of various A-metal salts (A = Sr, Ba or Ca salts) using two different methods for reaction initiation. No further calcination step is needed for the formation of well-defined perovskite structure. Graphene oxide (GO) is used as a fuel to prepare various Ru-based perovskites for the first time. The resulted low-Ru content nanocomposites are used as supercapacitor electrodes in a neutral electrolyte (1.0 M NaNO3). The results show that the specific capacitance of the resulted nanocomposites strongly depends on the method of their preparation as well as the type of A-site of the nanocomposites. Ru-based perovskites RGO nanocomposites that are prepared by combustion method show higher specific capacitance than those prepared by microwave irradiation. The maximum specific capacitance of Sr-, Ba- and Ca-RG-C composites at scan rate 2 mV s-1 are 564 (598 mF cm-2), 460 (487 mF cm-2) and 316 (336 mF cm-2) F g-1, respectively. This value is higher than our previous work using a physical mixture between the individually prepared RGO and SrRuO3. Lowest values for specific capacitance are obtained when using CaRuO3/RGO prepared using microwave-assisted method (Ca-RG-M). The resulted A-RG-nanocomposites show very high cycling stability and good specific capacitance compared to other Ru-based structures previously reported in the literature. A correlation is defined between the structure and specific capacitance of the nanocomposites. It is confirmed that the nanocomposite size, morphology and distribution over the RGO matrix influence the supercapacitor characteristics.
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Affiliation(s)
- Ahmed Galal
- Department of Chemistry, Faculty of Science, University of Cairo, 12613 Giza, Egypt.
| | - Hagar K Hassan
- Department of Chemistry, Faculty of Science, University of Cairo, 12613 Giza, Egypt
| | - Nada F Atta
- Department of Chemistry, Faculty of Science, University of Cairo, 12613 Giza, Egypt
| | - Timo Jacob
- Institute of Electrochemistry, Ulm University, 89081 Ulm, Germany; Helmholtz-Institute-Ulm (HIU) [d], Helmholtzstr. 11, 89081 Ulm, Germany; Karlsruhe Institute of Technology (KIT), P.O. Box 3640, 76021 Karlsruhe, Germany.
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Atta NF, El-Ads EH, Galal A, Galal AE. Electrochemical Sensing Platform Based on Nano-Perovskite/Glycine/Carbon Composite for Amlodipine and Ascorbic Acid Drugs. ELECTROANAL 2018. [DOI: 10.1002/elan.201800577] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Nada F. Atta
- Chemistry Department; Faculty of Science; Cairo University; 12613 Giza Egypt
| | - Ekram H. El-Ads
- Chemistry Department; Faculty of Science; Cairo University; 12613 Giza Egypt
| | - Ahmed Galal
- Chemistry Department; Faculty of Science; Cairo University; 12613 Giza Egypt
| | - Aya E. Galal
- Chemistry Department; Faculty of Science; Cairo University; 12613 Giza Egypt
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Atta NF, Ahmed YM, Galal A. Layered-designed composite sensor based on crown ether/Nafion®/polymer/carbon nanotubes for determination of norepinephrine, paracetamol, tyrosine and ascorbic acid in biological fluids. J Electroanal Chem (Lausanne) 2018. [DOI: 10.1016/j.jelechem.2018.09.029] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Amin HMA, El-Kady MF, Atta NF, Galal A. Gold Nanoparticles Decorated Graphene as a High Performance Sensor for Determination of Trace Hydrazine Levels in Water. ELECTROANAL 2018. [DOI: 10.1002/elan.201800125] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Hatem M. A. Amin
- Department of Chemistry, Faculty of Science; Cairo University; Giza 12613 Egypt
| | - Maher F. El-Kady
- Department of Chemistry and Biochemistry and California NanoSystems Institute; University of California, Los Angeles (UCLA); Los Angeles, CA 90095 United States
| | - Nada F. Atta
- Department of Chemistry, Faculty of Science; Cairo University; Giza 12613 Egypt
| | - Ahmed Galal
- Department of Chemistry, Faculty of Science; Cairo University; Giza 12613 Egypt
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Galal A, Atta NF, El-Ads EH, El-Gohary ARM. Fabrication of β-Cyclodextrin/Glycine/Carbon Nanotubes Electrochemical Neurotransmitters Sensor - Application in Ultra-sensitive Determination of DOPAC in Human Serum. ELECTROANAL 2018. [DOI: 10.1002/elan.201800046] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Ahmed Galal
- Chemistry Department, Faculty of Science; Cairo University; 12613 Giza Egypt
| | - Nada F. Atta
- Chemistry Department, Faculty of Science; Cairo University; 12613 Giza Egypt
| | - Ekram H. El-Ads
- Chemistry Department, Faculty of Science; Cairo University; 12613 Giza Egypt
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Atta NF, Ahmed YM, Galal A. Electrochemical Determination of Neurotransmitters at Crown Ether Modified Carbon Nanotube Composite: Application for Sub‐nano‐sensing of Serotonin in Human Serum. ELECTROANAL 2018. [DOI: 10.1002/elan.201800065] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Nada F. Atta
- Chemistry Department, Faculty of ScienceCairo University 12613 Giza Egypt
| | - Yousef M. Ahmed
- Chemistry Department, Faculty of ScienceCairo University 12613 Giza Egypt
| | - Ahmed Galal
- Chemistry Department, Faculty of ScienceCairo University 12613 Giza Egypt
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Galal A, Hassan HK, Jacob T, Atta NF. Enhancing the specific capacitance of SrRuO3 and reduced graphene oxide in NaNO3, H3PO4 and KOH electrolytes. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2017.12.026] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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26
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Galal A, Hassan HK, Atta NF, Jacob T. An Efficient and Durable Electrocatalyst for Hydrogen Production Based on Earth-Abundant Oxide-Graphene Composite. ChemistrySelect 2017. [DOI: 10.1002/slct.201701408] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Ahmed Galal
- Department of Chemistry, Faculty of Science; Cairo University; 1 Gamaa Al Kahira Street 12613 Giza Egypt
| | - Hagar K. Hassan
- Department of Chemistry, Faculty of Science; Cairo University; 1 Gamaa Al Kahira Street 12613 Giza Egypt
| | - Nada F. Atta
- Department of Chemistry, Faculty of Science; Cairo University; 1 Gamaa Al Kahira Street 12613 Giza Egypt
| | - Timo Jacob
- Institute of Electrochemistry; Ulm University; 89081 Ulm Germany
- Helmholtz-Institute-Ulm (HIU); Helmholtzstr. 11 89081 Ulm Germany
- Karlsruhe Institute of Technology (KIT); P.O. Box 3640 76021 Karlsruhe Germany
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Galal A, Amin KM, Atta NF, Abd El-Rehim HA. Protective ability of graphene prepared by γ-irradiation and impregnated with organic inhibitor applied on AISI 316 stainless steel. Journal of Alloys and Compounds 2017; 695:638-647. [DOI: 10.1016/j.jallcom.2016.11.081] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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28
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F. Atta N. Effect of Titania Nanoparticles Loading in Sol-Gel Films for Corrosion Protection of Aluminum AA2024-T3 Alloy in 3.5% Sodium Chloride Solution. INT J ELECTROCHEM SC 2017. [DOI: 10.20964/2017.02.40] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Hassan HK, Atta NF, Hamed MM, Galal A, Jacob T. Ruthenium nanoparticles-modified reduced graphene prepared by a green method for high-performance supercapacitor application in neutral electrolyte. RSC Adv 2017. [DOI: 10.1039/c6ra27415c] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Here, we report a one-pot preparation of a ruthenium-based reduced graphene oxide hybrid (Runano-based RGO) for supercapacitors applications.
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Affiliation(s)
- Hagar K. Hassan
- Department of Chemistry
- Faculty of Science
- Cairo University
- 12613 Giza
- Egypt
| | - Nada F. Atta
- Department of Chemistry
- Faculty of Science
- Cairo University
- 12613 Giza
- Egypt
| | - Maher M. Hamed
- Department of Chemistry
- Faculty of Science
- Cairo University
- 12613 Giza
- Egypt
| | - Ahmed Galal
- Department of Chemistry
- Faculty of Science
- Cairo University
- 12613 Giza
- Egypt
| | - Timo Jacob
- Institute of Electrochemistry
- Ulm University
- 89081 Ulm
- Germany
- Helmholtz-Institute-Ulm (HIU) [d]
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El-Ads EH, Galal A, Atta NF. The effect of A-site doping in a strontium palladium perovskite and its applications for non-enzymatic glucose sensing. RSC Adv 2016. [DOI: 10.1039/c5ra24107c] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The catalytic activity of a strontium palladium perovskite, Sr2PdO3, toward non-enzymatic glucose sensing is strongly affected by the Sr2+ A-site partial substitution by Ca2+ ions; Sr2−xCaxPdO3 with x = 0–0.7.
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Affiliation(s)
- Ekram H. El-Ads
- Chemistry Department
- Faculty of Science
- Cairo University
- 12613 Giza
- Egypt
| | - Ahmed Galal
- Chemistry Department
- Faculty of Science
- Cairo University
- 12613 Giza
- Egypt
| | - Nada F. Atta
- Chemistry Department
- Faculty of Science
- Cairo University
- 12613 Giza
- Egypt
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Atta NF, Ibrahim AH, Galal A. Nickel oxide nanoparticles/ionic liquid crystal modified carbon composite electrode for determination of neurotransmitters and paracetamol. NEW J CHEM 2016. [DOI: 10.1039/c5nj01804h] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ionic liquid crystals mimic the natural bio-based ionic liquid crystals such as cell membrane structures in their interactions with drugs.
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Affiliation(s)
- Nada F. Atta
- Chemistry Department
- Faculty of Science
- Cairo University
- 12013 Giza
- Egypt
| | - Asmaa H. Ibrahim
- Chemistry Department
- Faculty of Science
- Cairo University
- 12013 Giza
- Egypt
| | - Ahmed Galal
- Chemistry Department
- Faculty of Science
- Cairo University
- 12013 Giza
- Egypt
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Galal A, Atta NF, Azab SM, Ibrahim AH. Electroanalysis of Benazepril Hydrochloride Antihypertensive Drug Using an Ionic Liquid Crystal Modified Carbon Paste Electrode. ELECTROANAL 2015. [DOI: 10.1002/elan.201400652] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Atta NF, Amin KM, Abd El-Rehim HA, Galal A. Graphene prepared by gamma irradiation for corrosion protection of stainless steel 316 in chloride containing electrolytes. RSC Adv 2015; 5:71627-71636. [DOI: 10.1039/c5ra11287g] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/02/2023] Open
Abstract
Graphene prepared by gamma irradiation of GO and used as a coating against pitting corrosion of AISI 316 in NaCl.
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Affiliation(s)
- Nada F. Atta
- Department of Chemistry
- Faculty of Science
- Cairo University
- 12613 Giza
- Egypt
| | - Khaled M. Amin
- National Center for Radiation Research and Technology
- Atomic Energy Authority
- Nasr City
- Egypt
| | - Hassan A. Abd El-Rehim
- National Center for Radiation Research and Technology
- Atomic Energy Authority
- Nasr City
- Egypt
| | - Ahmed Galal
- Department of Chemistry
- Faculty of Science
- Cairo University
- 12613 Giza
- Egypt
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Atta NF, Galal A, Abdel‐Gawad FM, Mohamed EF. Electrochemical Morphine Sensor Based on Gold Nanoparticles Metalphthalocyanine Modified Carbon Paste Electrode. ELECTROANAL 2014. [DOI: 10.1002/elan.201400464] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Nada F. Atta
- Chemistry Department, Faculty of Science, Cairo University, 12013 Giza, Egypt, Tel: +20 0237825266; fax: +20 0235727556
| | - Ahmed Galal
- Chemistry Department, Faculty of Science, Cairo University, 12013 Giza, Egypt, Tel: +20 0237825266; fax: +20 0235727556
- Present address: Kuwait University, Faculty of Science, Chemistry Department, Kuwait
| | | | - Eman F. Mohamed
- National Organization for Drug Control and Research, Giza, Egypt
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Atta NF, Hassan HK, Galal A. Rapid and simple electrochemical detection of morphine on graphene–palladium-hybrid-modified glassy carbon electrode. Anal Bioanal Chem 2014; 406:6933-42. [DOI: 10.1007/s00216-014-7999-x] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Revised: 06/02/2014] [Accepted: 06/25/2014] [Indexed: 10/25/2022]
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Hassan HK, Atta NF, Galal A. Electrodeposited nanostructured Pt–Ru co-catalyst on graphene for the electrocatalytic oxidation of formaldehyde. J Solid State Electrochem 2013. [DOI: 10.1007/s10008-013-2008-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Atta NF, Ahmed RA, Amin HMA, Galal A. Monodispersed Gold Nanoparticles Decorated Carbon Nanotubes as an Enhanced Sensing Platform for Nanomolar Detection of Tramadol. ELECTROANAL 2012. [DOI: 10.1002/elan.201200344] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Atta NF, Galal A, El-Ads EH. Gold nanoparticles-coated poly(3,4-ethylene-dioxythiophene) for the selective determination of sub-nano concentrations of dopamine in presence of sodium dodecyl sulfate. Electrochim Acta 2012. [DOI: 10.1016/j.electacta.2012.02.082] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Galal A, Atta NF, El-Ads EH. Probing cysteine self-assembled monolayers over gold nanoparticles – Towards selective electrochemical sensors. Talanta 2012; 93:264-73. [DOI: 10.1016/j.talanta.2012.02.032] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2011] [Revised: 02/11/2012] [Accepted: 02/15/2012] [Indexed: 11/28/2022]
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Atta NF, Galal A, El-Ads EH. A novel sensor of cysteine self-assembled monolayers over gold nanoparticles for the selective determination of epinephrine in presence of sodium dodecyl sulfate. Analyst 2012; 137:2658-68. [DOI: 10.1039/c2an16210e] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Abstract
A novel and effective electrochemical sensor for the determination of morphine (MO) in 0.04 mol L(-1) universal buffer solution (pH 7.4) is introduced using gold nanoparticles electrodeposited on a Nafion modified carbon paste electrode. The effect of various experimental parameters including pH, scan rate and accumulation time on the voltammetric response of MO was investigated. At the optimum conditions, the concentration of MO was determined using differential pulse voltammetry (DPV) in a linear range of 2.0 × 10(-7) to 2.6 × 10(-4) mol L(-1) with a correlation coefficient of 0.999, and a detection limit of 13.3 × 10(-10) mol L(-1), respectively. The effect of common interferences on the current response of morphine namely ascorbic acid (AA) and uric acid (UA) is studied. The modified electrode can be used for the determination of MO spiked into urine samples, and excellent recovery results were obtained.
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Affiliation(s)
- Nada F Atta
- Department of Chemistry, Faculty of Science, Cairo University, Giza, Egypt.
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Atta NF, Galal A, Abu-Attia FM, Azab SM. Simultaneous determination of paracetamol and neurotransmitters in biological fluids using a carbon paste sensor modified with gold nanoparticles. ACTA ACUST UNITED AC 2011. [DOI: 10.1039/c1jm11795e] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Atta NF, El-Kady MF, Galal A. Simultaneous determination of catecholamines, uric acid and ascorbic acid at physiological levels using poly(N-methylpyrrole)/Pd-nanoclusters sensor. Anal Biochem 2010; 400:78-88. [DOI: 10.1016/j.ab.2010.01.001] [Citation(s) in RCA: 127] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2009] [Revised: 12/17/2009] [Accepted: 01/06/2010] [Indexed: 10/20/2022]
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Atta NF, Abdel-Mageed AM. Smart electrochemical sensor for some neurotransmitters using imprinted sol–gel films. Talanta 2009; 80:511-8. [DOI: 10.1016/j.talanta.2009.07.014] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2009] [Revised: 07/02/2009] [Accepted: 07/06/2009] [Indexed: 11/15/2022]
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Galal A, Atta NF, Darwish SA, Abdallah AM. Electrochemistry and Characterization of Conducting Poly(3-methylthiophene) Electrodes Containing Ferrocene Moieties. BCSJ 1997. [DOI: 10.1246/bcsj.70.1769] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Rubinson JF, Neff S, Mark HB, Galal A, Atta NF. Characterization and investigation of the electrocatalytic properties of poly-p-phenylene modified electrodes. J Electroanal Chem (Lausanne) 1995. [DOI: 10.1016/0022-0728(94)03727-k] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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