scholarly journals An Alternative Electrochemical Approach to Detect 4-Nitrophenylhydrazine With ZnO/SnO2 Nanoparticles Decorated Glassy Carbon Electrode

2021 ◽  
Author(s):  
Md Mahmud Alam ◽  
M.T. Uddin ◽  
Mohammed M. Rahman ◽  
Abdullah M. Asiri ◽  
M.A. Islam
Keyword(s):  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Dynamic Range ◽  
Sno2 Nanoparticles ◽  
Active Surface ◽  
Xrd Analysis ◽  
Carbon Electrode ◽  
Electrochemical Approach ◽  
Versus Concentration

Abstract The 4-NPHyd (4-nitrophenylhydrazine) electrochemical sensor assembled using wet-chemically prepared ZnO/SnO2 nanoparticle (NPs) decorated a glassy carbon electrode (GCE) with conductive Nafion binder. The synthesized NPs characterized by XPS, ESEM, EDS, and XRD analysis. The calibration of the proposed sensor obtained from current versus concentration of 4-NPHyd found linear over a concentration (0.1nM~0.01mM) of 4-NPHyd, which denoted as the dynamic range (LDR) for detection of 4-NPHyd. The 4-NPHyd sensor sensitivity calculated using the LDR slope considering the active surface of GCE (0.0316 cm2), which is equal to be 7.6930 µAµM-1cm-2, an appreciable value. The detection limit (LOD) at signal/noise (S/N=3) estimated, and outstanding lower value at 94.63±4.73 pM perceived. The analytical parameters such as reproducibility, long-term performing ability and response time are found as appreciable. Finally, the projected sensor shows exceptional performances in the detection of 4-NPHyd in environmental samples.

scholarly journals A reliable electrochemical sensor developed based on ZnO/SnO₂ nanoparticles modified glassy carbon electrode

2021 ◽  
Vol 2 (1) ◽  
pp. 24-34
Author(s):  
M. Mahmud Alam ◽  
◽  
M. T. Uddin ◽  
Mohammed M. Rahman ◽  
Abdullah M. Asiri ◽  
...  
Keyword(s):  
Electrochemical Sensor ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Dynamic Range ◽  
Active Surface ◽  
Xrd Analysis ◽  
Carbon Electrode ◽  
Sno2 Nanoparticle ◽  
Versus Concentration

The 4-NPHyd (4-nitrophenylhydrazine) electrochemical sensor assembled using wet-chemically prepared ZnO/SnO2 nanoparticle (NPs) decorated a glassy carbon electrode (GCE) with conductive Nafion binder. The synthesized NPs characterized by XPS, ESEM, EDS, and XRD analysis. The calibration of the proposed sensor obtained from current versus concentration of 4-NPHyd found linear over a concentration (0.1 nM ~ 0.01 mM) of 4-NPHyd, which denoted as the dynamic range (LDR) for detection of 4-NPHyd. The 4-NPHyd sensor sensitivity calculated using the LDR slope considering the active surface of GCE (0.0316 cm2), which is equal to be 7.6930 µAµM/cm2, an appreciable value. The detection limit (LOD) at signal/noise (S/N = 3) estimated, and outstanding lower value at 94.63±4.73 pM perceived. The analytical parameters such as reproducibility, long-term performing ability and response time are found as appreciable. Finally, the projected sensor shows exceptional performances in the detection of 4-NPHyd in environmental samples.

scholarly journals An Electrochemical Approach for the Selective Detection of Cancer Metabolic Creatine Biomarker with Porous Nano-Formulated CMNO Materials Decorated Glassy Carbon Electrode

Sensors ◽  
2020 ◽  
Vol 20 (24) ◽  
pp. 7060
Author(s):  
Mohammed M. Rahman ◽  
Md. M. Alam ◽  
Abdullah M. Asiri ◽  
Firoz. A. D. M. Opo
Keyword(s):  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Dynamic Range ◽  
Mixed Metal Oxide ◽  
Active Surface Area ◽  
Carbon Electrode ◽  
X Ray ◽  
Mixed Metal ◽  
Electrochemical Approach ◽  
Sensor Probe

The facile wet-chemical technique was used to prepare the low-dimensional nano-formulated porous mixed metal oxide nanomaterials (CuO.Mn2O3.NiO; CMNO NMs) in an alkaline medium at low temperature. Detailed structural, morphological, crystalline, and functional characterization of CMNO NMs were performed by X-ray photoelectron spectroscopy (XPS), powder X-ray diffraction (XRD), ultraviolet-visible spectroscopy (UV-vis), Fourier-transform infrared spectroscopy (FTIR), field emission scanning electron microscopy (FESEM), and energy-dispersive X-ray spectroscopy (EDS) analyses. An efficient and selective creatine (CA) sensor probe was fabricated by using CMNO NMs decorated onto glassy carbon electrode (GCE) as CMNO NMs/GCE by using Nafion adhesive (5% suspension in ethanol). The relation of current versus the concentration of CA was plotted to draw a calibration curve of the CMNO NMs/GCE sensor probe, which was found to have a very linear value (r2 = 0.9995) over a large dynamic range (LDR: 0.1 nM~0.1 mM) for selective CA detection. The slope of LDR by considering the active surface area of GCE (0.0316 cm2) was applied to estimate the sensor sensitivity (14.6308 µAµM−1 cm−2). Moreover, the detection limit (21.63 ± 0.05 pM) of CMNO MNs modified GCE was calculated from the signal/noise (S/N) ratio at 3. As a CA sensor probe, it exhibited long-term stability, good reproducibility, and fast response time in the detection of CA by electrochemical approach. Therefore, this research technique is introduced as a promising platform to develop an efficient sensor probe for cancer metabolic biomarker by using nano-formulated mixed metal oxides for biochemical as well as biomedical research for the safety of health care fields.

scholarly journals Hydrazine sensors development based on a glassy carbon electrode modified with a nanostructured TiO2 films by electrochemical approach

2017 ◽  
Vol 184 (7) ◽  
pp. 2123-2129 ◽  
Author(s):  
Mohammed M. Rahman ◽  
Valero G. Alfonso ◽  
Francisco Fabregat-Santiago ◽  
Juan Bisquert ◽  
Abdullah M. Asiri ◽  
...  
Keyword(s):  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Carbon Electrode ◽  
Tio2 Films ◽  
Nanostructured Tio2 ◽  
Electrochemical Approach

Assessment of environmentally unsafe pollutants using facile wet-chemically prepared CeO2–ZrO2 nanocomposites by the electrochemical approach

2020 ◽  
Vol 44 (46) ◽  
pp. 20285-20293
Author(s):  
Mohammed M. Rahman ◽  
M. M. Alam ◽  
Abdullah M. Asiri ◽  
Jamal Uddin
Keyword(s):  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Chemical Sensor ◽  
Carbon Electrode ◽  
Modified Glassy Carbon Electrode ◽  
Electrochemical Approach ◽  
Sensor Probe ◽  
Co Doped

Selective and sensitive 4-methoxyphenol chemical sensor was developed with a co-doped CeO2–ZrO2 nanocomposite modified glassy carbon electrode as a sensor probe by electrochemical approach for the safety of environmental and ecological fields in broad scales.

Development of Cd2+ sensor based on BZNA/Nafion/Glassy carbon electrode by electrochemical approach

2018 ◽  
Vol 352 ◽  
pp. 225-231 ◽  
Author(s):  
Reda M. El-Shishtawy ◽  
Huda A. Al-Ghamdi ◽  
M.M. Alam ◽  
Zahra M. Al-amshany ◽  
Abdullah M. Asiri ◽  
...  
Keyword(s):  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Carbon Electrode ◽  
Electrochemical Approach

Electrocatalytic Response and Determination of Noradrenaline in the Presence of L-Ascorbic and Uric Acids with Poly(Eriochrome Black T)-Modified Electrode

2007 ◽  
Vol 72 (9) ◽  
pp. 1177-1188 ◽  
Author(s):  
Xinhua Lin ◽  
Wei Li ◽  
Hong Yao ◽  
Yuanyuan Sun ◽  
Liying Huang ◽  
...  
Keyword(s):  
Glassy Carbon Electrode ◽  
Modified Electrode ◽  
Glassy Carbon ◽  
Dynamic Range ◽  
Differential Pulse ◽  
Carbon Electrode ◽  
Modified Glassy Carbon Electrode ◽  
Eriochrome Black T ◽  
Wide Linear Dynamic Range

A poly(Eriochrome Black T) chemically modified glassy carbon electrode modified with Eriochrome Black T was prepared by cyclic voltammetry. The modified electrode showed an excellent electrocatalytic activity in oxidation of noradrenaline (NA) and could separate its electrochemical responses from those of L-ascorbic acid (AA) and uric acid (UA). Differences of the oxidation peak potentials for NA-AA and UA-NA were about 150 mV. The responses to NA, AA and UA of the modified electrode are relatively independent. Using differential pulse voltammetry, the peak currents of NA at modified glassy carbon electrode increased linearly with the concentration of NA from 0.5 to 100 μmol l-1. The detection limit was 0.2 μmol l-1. With the modified electrode, UA could be selectively determined in the presence of AA. The method showing a wide linear dynamic range and excellent sensitivity was successfully applied to the determination of NA in pharmaceutical injections and various samples.

scholarly journals A New Cr3+ Electrochemical Sensor Based on ATNA/Nafion/Glassy Carbon Electrode

Materials ◽  
2020 ◽  
Vol 13 (12) ◽  
pp. 2695
Author(s):  
Reda M. El-Shishtawy ◽  
Mohammed M. Rahman ◽  
Tahir Ali Sheikh ◽  
Muhammad Nadeem Arshad ◽  
Fatimah A. M. Al-Zahrani ◽  
...  
Keyword(s):  
Electrochemical Sensor ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Dynamic Range ◽  
Condensation Reaction ◽  
Intramolecular Hydrogen Bonding ◽  
Spectroscopic Techniques ◽  
Carbon Electrode ◽  
Heavy Metal Cations ◽  
Intramolecular Hydrogen

A new electrochemical sensor of metal cation in an aqueous solution based on homobifunctional tridentate disulfide Schiff base and named 1,1′-(-((disulfanediylbis(2,1-phenylene))bis(azaneylylidene))bis(methaneylylidene))bis(naphthalene-2-ol) (ATNA) was easily obtained quantitatively from the condensation reaction of 2-hydroxy-1-naphthaldehyde and 2-aminothiophenol, and then fully characterized by spectroscopic techniques for structure elucidation. The molecular structure of ATNA was also confirmed by a single-crystal X-ray diffraction study to reveal a new conformation in which the molecule was stabilized by the O–H…N type intramolecular hydrogen bonding interactions in both moieties. The ATNA was used as a selective electrochemical sensor for the detection of chromium ion (Cr3+). A thin film of ATNA was coated on to the flat surface of glassy carbon electrode (GCE) followed by 5 % ethanolic Nafion in order to make the modified GCE (ATNA/Nafion/GCE) as an efficient and sensitive electrochemical sensor. It was found to be very effective and selective against Cr3+ cations in the company of other intrusive heavy metal cations such as Al3+, Ce3+, Co2+, Cu2+, Ga3+, Hg2+, Mn2+, Pb2+, and Y3+. The detection limit at 3 S/N was found to be 0.013 nM for Cr3+ ions within the linear dynamic range (LDR) (0.1 nM–10.0 mM) of Cr3+ ions with r2 = 0.9579. Moreover; this work instigates a new methodology for developing the sensitive as well as selective electrochemical toxic cationic sensors in the field of environmental and health care.

Voltammetry Determination of Cefotaxime on Zinc Oxide Nanorod Modified Electrode

2020 ◽  
Vol 17 (1) ◽  
pp. 40-46
Author(s):  
Vanitha Vasantharaghavan ◽  
Ravichandran Cingaram
Keyword(s):  
Zinc Oxide ◽  
Glassy Carbon Electrode ◽  
Modified Electrode ◽  
Glassy Carbon ◽  
Dynamic Range ◽  
Limit Of Detection ◽  
Accurate Determination ◽  
Voltammetric Determination ◽  
Carbon Electrode

Background: The Glassy Carbon Electrode (GCE) was modified with zinc oxide nanoparticles to enhance the electrocatalytic activity of the redox behavior of cefotaxime ion. ATOMIC Force Microscopy (AFM) photographic studies showed the nanorod like structure of the zinc oxide, which was coated uniformly on the electrode surface. Methods: The zinc oxide nanorod modified electrode was used as novel voltammetric determination of cefotaxime. The results of voltammetric behavior are satisfactory in the electro oxidation of cefotaxime, and exhibit considerable improvement compared to glassy carbon electrode. Results: Under the optimized experimental conditions, the ZnO nanorod modified electrode exhibit better linear dynamic range from 300 ppb to 700 ppb with lower limit of detection 200 ppb for the stripping voltammetric determination of cefotaxime. Conclusion: The pharmaceutical and clinical formulation of cefotaxime was successfully applied for accurate determination of trace amounts on ZnO nanomateials modified electrode.

scholarly journals An alternative electrochemical approach for toluene detection with ZnO/MgO/Cr2O3 nanofibers on a glassy carbon electrode for environmental monitoring

RSC Advances ◽  
2020 ◽  
Vol 10 (73) ◽  
pp. 44641-44653
Author(s):  
M. M. Alam ◽  
Abdullah M. Asiri ◽  
M. T. Uddin ◽  
Mohammed M. Rahman ◽  
M. A. Islam
Keyword(s):  
Environmental Monitoring ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Carbon Electrode ◽  
Electrochemical Approach ◽  
Sensor Probe

In situ fabrication of a sensitive electrochemical toluene sensor probe using wet-chemically prepared ternary ZnO/MgO/Cr2O3 nanofiber (NF)-decorated glassy carbon electrode (GCE) with Nafion adhesive was the approach of this study.

scholarly journals Fabrication of Sb3+sensor based on 1,1′-(-(naphthalene-2,3-diylbis(azanylylidene))bis(methanylylidene))bis(naphthalen-2-ol)/nafion/glassy carbon electrode assembly by electrochemical approach

RSC Advances ◽  
2018 ◽  
Vol 8 (35) ◽  
pp. 19754-19764 ◽  
Author(s):  
Mohammed M. Rahman ◽  
Tahir Ali Sheikh ◽  
Reda M. El-Shishtawy ◽  
Muhammad Nadeem Arshad ◽  
Fatimah A. M. Al-Zahrani ◽  
...  
Keyword(s):  
Schiff Base ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Structure Elucidation ◽  
Condensation Reaction ◽  
Spectroscopic Techniques ◽  
Carbon Electrode ◽  
Electrochemical Approach

A new Schiff base named 1,1′-(-(naphthalene-2,3-diylbis(azanylylidene))bis(methanylylidene))bis(naphthalen-2-ol) (NDNA) was synthesized by condensation reaction and then characterized by spectroscopic techniques for structure elucidation.

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