One-step wet-chemical synthesis of ternary ZnO/CuO/Co3O4 nanoparticles for sensitive and selective melamine sensor development

2019 ◽  
Vol 43 (12) ◽  
pp. 4849-4858 ◽  
Author(s):  
M. M. Alam ◽  
Abdullah M. Asiri ◽  
M. T. Uddin ◽  
Inamuddin Inamuddin ◽  
M. A. Islam ◽  
...  
Keyword(s):  
Chemical Sensor ◽  
Dynamic Range ◽  
Fast Response ◽  
Co3o4 Nanoparticles ◽  
Linear Dynamic Range ◽  
Wet Chemical Synthesis ◽  
Electrochemical Approach ◽  
One Step ◽  
Wet Chemical ◽  
Sensor Probe

Using one-step wet-chemically synthesized ternary ZnO/CuO/Co3O4 nanoparticles (NPs) fabricated GCE sensor probe, a selective and sensitive melamine chemical sensor was developed by electrochemical approach, which exhibited the highest sensitivity, better repeatability, broad linear dynamic range, good linearity, fast response time, and lowest detection limit.

scholarly journals Potential application of mixed metal oxide nanoparticle-embedded glassy carbon electrode as a selective 1,4-dioxane chemical sensor probe by an electrochemical approach

RSC Advances ◽  
2019 ◽  
Vol 9 (72) ◽  
pp. 42050-42061 ◽  
Author(s):  
Mohammed M. Rahman ◽  
M. M. Alam ◽  
Abdullah M. Asiri
Keyword(s):  
Chemical Sensor ◽  
Mixed Metal Oxide ◽  
Carbon Electrode ◽  
Metal Oxide Nanoparticle ◽  
Electrochemical Approach ◽  
Wet Chemical ◽  
Oxide Nanoparticle ◽  
Co Precipitation ◽  
Low Dimensional ◽  
Sensor Probe

Low-dimensional ternary ZnO/NiO/MnO2 nanoparticles were prepared by wet-chemical co-precipitation in alkaline medium and then used to develop a selective and ultra-sensitive 1,4-dioxane sensor using electrochemistry for the safety of healthcare and the environment.

Comparative performances of phenolic sensors based on various CeO2-carbon material nanocomposites for environmental safety

Sensor Review ◽  
2018 ◽  
Vol 38 (4) ◽  
pp. 467-477 ◽  
Author(s):  
Faisal K. Algethami ◽  
Hadi M. Marwani ◽  
Abdullah M. Asiri ◽  
Mohammed M. Rahman
Keyword(s):  
Detection Limit ◽  
Carbon Material ◽  
Chemical Sensor ◽  
Ultra Violet ◽  
Limit Of Quantification ◽  
Content Type ◽  
Electrochemical Approach ◽  
Vis Spectroscopy ◽  
Wet Chemical ◽  
Sensor Probe

Purpose The purpose of this study is to prepare various CeO2-based carbon material (CNT, CB, GO) nanocomposites through a wet chemical process for the development of a sensor probe to detect various environmental toxins by using an electrochemical approach under room temperature conditions. A comparative study on sensitive and selective phenolic sensor (4-methoxyphenol; 4-MP) has been fabricated by modifying a glassy carbon electrode (GCE) with various nanocomposites (NCs) such as CeO2, CeO2–CNT (carbon nanotubes), CeO2–CB (carbon black) and CeO2–GO (graphene oxide) NCs. Design/methodology/approach The CeO2–CNT NCs were prepared by the wet chemical method at low temperature. NCs were characterized by various methods such as transmission electron microscopy (TEM), Fourier-transform infra-red (FTIR), ultra-violet/visible (UV-Vis) spectroscopy and XRD (X-ray diffraction). CeO2–CNT NCs were immobilized as a film on the flat surface of the GCE by using binders (5% Nafion). The electrochemical measurements of the 4-MP detection with the CeO2–CNT NCs/Nafion/GCE sensor were studied by the current-voltage method. Findings In the optimal conditions, the sensitivity, detection limit and limit of quantification of 4-MP sensor probe were found to be 47.56 µAcm-2 µM−1, 12.0 ± 0.2 nM and 40.0 ± 0.5 nM (S/N of 3), respectively. Research limitations/implications This electrochemical sensor showed an acceptable analytical performance in the detection of 4-MP with higher sensitivity, lower detection limit, large dynamic concentration range, good reproducibility and fast response time. Practical implications This electrochemical approach can be applied practically for the determination of selective 4-MP in real environmental and extracted samples. Social implications CeO2–CNT NCs/Nafion/GCE sensor probe was used for the safety of environmental and health-care fields at larger scales. Originality/value This electrochemical approach is a significant achievement on the development of sensor probe. The results are indicated as being technically detailed with an up-to-date account of recent chemical sensor research studies.

scholarly journals Rapid and sensitive detection of selective 1,2-diaminobenzene based on facile hydrothermally prepared doped Co3O4/Yb2O3 nanoparticles

PLoS ONE ◽  
2021 ◽  
Vol 16 (2) ◽  
pp. e0246756
Author(s):  
Mohammed M. Rahman
Keyword(s):  
Chemical Sensor ◽  
Dynamic Range ◽  
Electrochemical Technique ◽  
Carbon Electrode ◽  
Linear Dynamic Range ◽  
Linear Dynamic ◽  
Low Dimensional ◽  
Sensor Probe ◽  
Broad Scale

In this approach, the performance of a newly developed sensor probe coated with low-dimensional Co3O4/Yb2O3 nanoparticles (NPs) in rapidly detecting 1,2-diaminobenzene was evaluated by an electrochemical technique. The sensor probe was fabricated by depositing a very thin layer consisting of synthesized Co3O4/Yb2O3 NPs using a 5% Nafion conducting binder onto a glassy carbon electrode (GCE). The facile hydrothermally prepared Co3O4/Yb2O3 NPs were totally characterized by conventional methods such as FTIR, UV-vis, TEM, XPS, EDS, and XRD analyses. The fabricated chemical sensor probe was found to exhibit long-term activity, stability in electrochemical response, good sensitivity (5.6962 μAμM-1cm-2), lowest detection limit (0.02±0.001 pM), and broad linear dynamic range (0.1 pM to 0.01 mM). The observed performances suggest that the newly introduced sensor could play an efficient role in detecting 1,2-diaminobenzene especially in healthcare and environmental applications on a broad scale.

scholarly journals Fabrication of Novel and Potential Selective 4-Cyanophenol Chemical Sensor Probe Based on Cu-Doped Gd2O3 Nanofiber Materials Modified PEDOT:PSS Polymer Mixtures with Au/µ-Chip for Effective Monitoring of Environmental Contaminants from Various Water Samples

Polymers ◽  
2021 ◽  
Vol 13 (19) ◽  
pp. 3379
Author(s):  
Mohammed Muzibur Rahman ◽  
S. Y. Alfaifi
Keyword(s):  
Chemical Sensor ◽  
Dynamic Range ◽  
Fast Response ◽  
Polymer Mixtures ◽  
X Ray Diffraction ◽  
Limit Of Quantification ◽  
Wide Linear Dynamic Range ◽  
Sensor Probe ◽  
Excellent Reproducibility

Herein, a novel copper-doped gadolinium oxide (Cu-doped Gd2O3; CGO) nanofiber was synthesized by a simple solution method in the basic phase and successfully characterized. We have used Fourier Transform Infrared Spectroscopy (FTIR), X-ray Diffraction (XRD), Field Emission Scanning Electron Microscope (FESEM) and Energy-Dispersive Spectroscopy (EDS) techniques for characterization of the CGO nanofiber. The CGO nanofiber was used later to modify Au-coated μ-Chips with poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) polymer mixtures (coating binder) to selectively detect 4-cyanophenol (4-CP) in an aqueous medium. Notable sensing performance was achieved with excellent sensitivity (2.4214 µAµM−1 cm−2), fast response time (~12 s), wide linear dynamic range (LDR = 1.0 nM–1.0 mM: R2 = 0.9992), ultra-low detection limit (LoD; 1.3 ± 0.1 pM at S/N = 3), limit of quantification (LoQ; 4.33 pM), and excellent reproducibility and repeatability for CGO/Au/μ-Chip sensor. This CGO modified Au/μ-chip was further applied with appropriate quantification and determination results in real environmental sample analyses.

Xanthine sensor development based on ZnO–CNT, ZnO–CB, ZnO–GO and ZnO nanoparticles: an electrochemical approach

2017 ◽  
Vol 41 (14) ◽  
pp. 6262-6271 ◽  
Author(s):  
Mohammed M. Rahman ◽  
Hadi M. Marwani ◽  
Faisal K. Algethami ◽  
Abdullah M. Asiri
Keyword(s):  
Zno Nanoparticles ◽  
Dynamic Range ◽  
Linear Dynamic Range ◽  
Wet Chemical Method ◽  
Linear Dynamic ◽  
Lower Detection Limit ◽  
Electrochemical Approach ◽  
Lower Detection ◽  
Wet Chemical ◽  
Higher Sensitivity

The wet-chemical method was used to prepare the various ZnO–CNT, ZnO–CB, ZnO–GO nanocomposites, and ZnO nanoparticles in higher pH medium, which were finally utilized with 5% nafion to produce a thin film of NCs/Nafion/GCE sensor that has a faster response towards selected xanthine with higher sensitivity, lower detection limit, and large linear dynamic range by 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.

One-step, seedless wet-chemical synthesis of gold@palladium nanoflowers supported on reduced graphene oxide with enhanced electrocatalytic properties

2014 ◽  
Vol 2 (43) ◽  
pp. 18177-18183 ◽  
Author(s):  
Shan-Shan Li ◽  
Ai-Jun Wang ◽  
Yuan-Yuan Hu ◽  
Ke-Ming Fang ◽  
Jian-Rong Chen ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Catalytic Activity ◽  
Chemical Synthesis ◽  
Alkaline Media ◽  
Chemical Route ◽  
Wet Chemical Synthesis ◽  
Reduced Graphene ◽  
One Step ◽  
Wet Chemical ◽  
Wet Chemical Route

A simple, seedless wet-chemical route was designed for synthesis of well-dispersed Au@Pd nanoflowers on rGO. The as-prepared nanocomposites exhibited enhanced catalytic activity and better stability for ORR and EG oxidation in alkaline media.

scholarly journals Highly porous palladium nanodendrites: wet-chemical synthesis, electron tomography and catalytic activity

2019 ◽  
Vol 48 (11) ◽  
pp. 3758-3767 ◽  
Author(s):  
Stefanos Mourdikoudis ◽  
Verónica Montes-García ◽  
Sergio Rodal-Cedeira ◽  
Naomi Winckelmans ◽  
Ignacio Pérez-Juste ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Chemical Synthesis ◽  
Electron Tomography ◽  
Simple Procedure ◽  
Wet Chemical Synthesis ◽  
One Step ◽  
Wet Chemical ◽  
Highly Porous

A simple procedure to obtain highly porous hydrophilic palladium nanodendrites in one step is described.

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.

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