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.

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.

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

scholarly journals Performance of graphene-zinc oxide nanocomposite coated-glassy carbon electrode in the sensitive determination of para-nitrophenol

2022 ◽  
Vol 12 (1) ◽  
Author(s):  
Riyaz Ahmad Dar ◽  
Gowhar Ahmad Naikoo ◽  
Ashwini Kumar Srivastava ◽  
Israr Ul Hassan ◽  
Shashi P. Karna ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Spectroscopic Techniques ◽  
Current Response ◽  
Carbon Electrode ◽  
X Ray ◽  
Model Complex ◽  
Sensitive Determination

AbstractGraphene: zinc oxide nanocomposite (GN:ZnO NC) platform was tried for the sensitive determination of para-nitrophenol (p-NP) through the electrochemical method. ZnO nanoparticles (NPs) were synthesized by the modified wet-chemical method where in potassium hydroxide and zinc nitrate were used as precursors and starch as a stabilizing agent. A green and facile approach was applied to synthesize GN:ZnO NC in which glucose was employed as a reductant to reduce graphene-oxide to graphene in the presence of ZnO NPs. The synthesized NC was characterized using scanning and high-resolution transmission electron microscopy, energy dispersive x-ray analysis, X-ray diffraction and Raman spectroscopic techniques to examine the crystal phase, crystallinity, morphology, chemical composition and phase structure. GN:ZnO NC layer deposited over the glassy carbon electrode (GCE) was initially probed for its electrochemical performance using the standard 1 mM K3[Fe(CN)6] model complex. GN:ZnO NC modified GCE was monitored based on p-NP concentration. An enhanced current response was observed in 0.1 M phosphate buffer of pH 6.8 for the determination of p-NP in a linear working range of 0.09 × 10–6 to 21.80 × 10–6 M with a lower detection limit of 8.8 × 10–9 M employing square wave adsorptive stripping voltammetric technique at a deposition-potential and deposition-time of − 1.0 V and 300 s, respectively. This electrochemical sensor displayed very high specificity for p-NP with no observed interference from some other possible interfering substances such as 2, 4-di-NP, ortho-NP, and meta-NP. The developed strategy was useful for sensitive detection of p-NP quantity in canals/rivers and ground H2O samples with good recoveries.

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 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.

Detection of uric acid based on doped ZnO/Ag2O/Co3O4 nanoparticle loaded glassy carbon electrode

2019 ◽  
Vol 43 (22) ◽  
pp. 8651-8659 ◽  
Author(s):  
M. M. Alam ◽  
Abdullah M. Asiri ◽  
M. T. Uddin ◽  
M. A. Islam ◽  
Md. Rabiul Awual ◽  
...  
Keyword(s):  
Uric Acid ◽  
Glassy Carbon Electrode ◽  
Glassy Carbon ◽  
Future Development ◽  
Carbon Electrode ◽  
Highly Sensitive ◽  
Electrochemical Approach ◽  
The Future ◽  
Doped Zno ◽  
Doped Nanomaterials

Highly sensitive and selective uric acid sensor was fabricated using facile wet-chemically prepared ternary doped ZnO/Ag2O/Co3O4 nanoparticles onto glassy carbon electrode by electrochemical approach, which introduced a prospective and reliable route to the future development of enzyme-free sensor by doped nanomaterials in broad scales.

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