A sensor of <i>m</i>‐cresol nanopolymer/Pt‐electrode film for detection of lead ions by potentiometric methods

Sayyah, El-Said M.; Abukhadra, Mostafa R.; Rabia, Mohamed

doi:10.1002/adv.21788

Cited by 39 publications

(33 citation statements)

References 30 publications

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“…From the figure, there are many bands appeared that confirm the structure of the prepared PANI material. The absorption band at 3401 cm −1 is attributed to NH stretching vibrations of amino groups . The 2918 cm −1 band is corresponding to the vibration of CH aliphatic .…”

Section: Resultsmentioning

confidence: 99%

“…The average crystallite size of the PANI crystal particles is determined from the full width at half maximum (W) data, considering the single main peak at 25.55 [37,40]. The calculation was carried out using Scherrer's formula; D = 0.9λ/W cos θ; where θ is the Bragg's angle, W is in radians, λ is the X-ray wavelength (CuKα = 0.15405 nm).…”

Section: Characterization Of the Prepared Filmsmentioning

confidence: 99%

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Effect of plasmonic au nanoparticles on the photoactivity of polyaniline/indium tin oxide electrodes for water splitting

Rabia

Abukhadra

Ahmed

et al. 2019

Env Prog and Sustain Energy

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Three nanomaterials based on polyaniline (PANI) are prepared on indium tin oxide (ITO) and applied as electrodes for H2 generation due to the water‐splitting process. PANI/ITO films are prepared using oxidation polymerization method at 25°C, then coated with Au nanoparticles with different thicknesses (sputter time from 1 to 2 min). The three prepared electrodes; PANI/ITO (Electrode (0), 1‐min‐Au/PANI/ITO (Electrode (I)), and 2‐min‐Au/PANI/ITO (Electrode (II)) are compared for H2 generation from H2O. Scanning electron microscope, X‐ray diffraction, UV‐Vis spectrophotometer, and Fourier‐transform infrared spectroscopy analyses have been carried out, in which the average PANI crystal size was ~20 nm. Moreover, the bandgaps were determined, in which 2‐min‐Au/PANI/ITO has the optimum bandgap of 2.25 eV. The characteristic behavior of the H2 generation took place depending on the current density (Jph) value by using Jph–V and Jph–time study. Also, the incident photon‐to‐current conversion efficiency (IPCE) and the applied bias photon‐to‐current efficiency (ABPE) were calculated for the Electrode (II) at 25°C. The optimum IPCE and ABPE efficiency were 18.7 and 0.99%, respectively, at 390 nm. By increasing the temperature to 70°C, the IPCE efficiency increases to about 37%. Finally, activation energy (Ea), enthalpy (ΔH*), and entropy (ΔS*) were determined, in which the values were 24.32 kJ mol−1, 10.90 kJ mol−1, and 74.99 J K−1 mol−1, respectively. © 2019 American Institute of Chemical Engineers Environ Prog, 38:e13146, 2019

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Section: Resultsmentioning

confidence: 99%

Section: Characterization Of the Prepared Filmsmentioning

confidence: 99%

Effect of plasmonic au nanoparticles on the photoactivity of polyaniline/indium tin oxide electrodes for water splitting

Rabia

Abukhadra

Ahmed

et al. 2019

Env Prog and Sustain Energy

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“…For instance, Platinum wire electrode was applied for lead determination in waste water by cyclic voltammetry method, the limit of detection (LOD) obtained is 0.9029 mg/L . A sensor of m ‐cresol polymer film‐coated platinum electrode was fabricated and studied for the detection of lead (II) ions (Pb 2+ ) in aqueous solutions using potentiometric method . This film has Nernstian response slope of 26.5 mV/decade with a detection limit of 1.0×10 −7 M at 293 K by the simple potentiometric method.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Nano Flower‐shaped Platinum on Glassy Carbon Electrode as a Sensitive Sensor for Lead Electrochemical Analysis

Nguyen

Cao²,

Pham

et al. 2019

Electroanalysis

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Platinum nanoflowers modified glassy carbon electrodes (PtNFs/GCE) was fabricated simply for lead determination in water samples. The modified electrodes were prepared by electrodeposition in hexachloroplatinic acid solution at constant potential. The influence of deposition time and potential on surface morphology, chemical composition, electrochemical properties of electrode were investigated. At À 0.2 V of potential and 150 s of deposition duration, platinum developed as nanoflower shape and scattered densely all over the glassy carbon surface, producing the largest electrochemically active surface areas. The highest differential pulse stripping voltammetry (DPSV) signal of lead was obtained by using the prepared electrode. Under optimized experimental condition of electrolyte, accumulation potential and time, the peak current was found to be linear proportion to lead concentration in range of 1 to 100 μg L À 1 (slope = 0.371) with a limit of detection of 0.398 μg L À 1 . The method has good repeatability and reproducibility with relative standard deviations of 1.47 % and 4.83 %, respectively. The modified PtNFs/GCE also demonstrated an excellent long-term stability with only 9 % decrease in Pb peak current over 30 days. Moreover, the performance of the modified PtNFs/GCE in determination of Pb(II) in two industrial wastewaters was good agreement with data obtained by a graphite furnace atomic absorption spectrometry (GFAAS) method.

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“…4 b. From the figure, the TiO 2 nanotube has a strong absorbance in the UV that is related to Π–Π* of the titanium ions 37 , 38 .…”

Section: Resultsmentioning

confidence: 95%

Preparation of hexagonal nanoporous Al2O3/TiO2/TiN as a novel photodetector with high efficiency

Elsayed

Rabia

Shaban

et al. 2021

Sci Rep

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The unique optical properties of metal nitrides enhance many photoelectrical applications. In this work, a novel photodetector based on TiO2/TiN nanotubes was deposited on a porous aluminum oxide template (PAOT) for light power intensity and wavelength detection. The PAOT was fabricated by the Ni-imprinting technique through a two-step anodization method. The TiO2/TiN layers were deposited by using atomic layer deposition and magnetron sputtering, respectively. The PAOT and PAOT/TiO2/TiN were characterized by several techniques such as X-ray diffraction (XRD), scanning electron microscope (SEM), and energy dispersive X-ray (EDX). The PAOT has high-ordered hexagonal nanopores with dimensions ~ 320 nm pore diameter and ~ 61 nm interpore distance. The bandgap of PAOT/TiO2 decreased from 3.1 to 2.2 eV with enhancing absorption of visible light after deposition of TiN on the PAOT/TiO2. The PAOT/TiO2/TiN as photodetector has a responsivity (R) and detectivity (D) of 450 mAW-1 and 8.0 × 1012 Jones, respectively. Moreover, the external quantum efficiency (EQE) was 9.64% at 62.5 mW.cm−2 and 400 nm. Hence, the fabricated photodetector (PD) has a very high photoelectrical response due to hot electrons from the TiN layer, which makes it very hopeful as a broadband photodetector.

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A sensor of m‐cresol nanopolymer/Pt‐electrode film for detection of lead ions by potentiometric methods

Cited by 39 publications

References 30 publications

Effect of plasmonic au nanoparticles on the photoactivity of polyaniline/indium tin oxide electrodes for water splitting

Effect of plasmonic au nanoparticles on the photoactivity of polyaniline/indium tin oxide electrodes for water splitting

Fabrication of Nano Flower‐shaped Platinum on Glassy Carbon Electrode as a Sensitive Sensor for Lead Electrochemical Analysis

Preparation of hexagonal nanoporous Al2O3/TiO2/TiN as a novel photodetector with high efficiency

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