High-Performance pH Sensor Electrodes Based on a Hexagonal Pt Nanoparticle Array-Coated Nanoporous Alumina Membrane

Altowyan, Abeer S.; Shaban, Mohamed; Gamel, Asmaa; Gamal, Ahmed; Ali, Mona F.; Rabia, Mohamed

doi:10.3390/ma15196515

Cited by 7 publications

(2 citation statements)

References 59 publications

(70 reference statements)

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“…The roll-GO/PANI composite demonstrates a good optical property rather than the PANI material alone due to its improved composition gathering both PANI and roll-GO materials' properties. The absorbance covers the UV, Vis, and IR regions, with an optimum absorbance peak at 310 and 650 nm assigned to electron transition under the photon incidence [20][21][22].…”

Section: Analysesmentioning

confidence: 99%

Impact of Rolled Graphene Oxide Grown on Polyaniline for Photodetection: Future Challenging Opto-Device

et al. 2023

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Rolled graphene oxide (roll-GO) with anew morphological properties than normal graphene is synthesized using modified Hummer. Then, the roll-GO/PANI composite is prepared through the adsorption of roll-GO on the surface of the PANI film, that performed through the oxidative polymerization method. The developed composite displays a small bandgap of 1.9 eV and shows a high optical property extends through a wide optical region from UV to IR regions. The chemical structure and function groups are confirmed using the XRD and FTIR. The roll-GO/PANI composite was investigated as a photodetector. The effects of different irradiation light conditions and the monochromatic wavelengths were tested through the measurements of the produced current density, Jph. The optical photon response exhibited excellent light sensitivity of the photodetector. The Jph enhanced highly under light (0.34 mA·cm−2) compared to dark conditions (0.007 mA·cm−2). Jph reached 0.24, 0.23, 0.14, and 0.09 mA·cm−2 under 340, 440, 540, and 730 nm, respectively. The photodetector detectivity (D) and photoresponsivity (R) are found to equal 0.45 × 109 Jones and 2.25 mA·W−1, respectively.

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Section: Analysesmentioning

confidence: 99%

Impact of Rolled Graphene Oxide Grown on Polyaniline for Photodetection: Future Challenging Opto-Device

et al. 2023

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“…The use of thin film technology allows for efficient sensing of heavy metals, as it provides a large surface area for interaction with the target ions. This high surface area enhances the sensitivity and responsiveness of the sensor, making it suitable for detecting trace amounts of heavy metals 14 – 16 . Another advantage of thin film membrane sensors is their portability and versatility.…”

Section: Introductionmentioning

confidence: 99%

Sensing of heavy metal Pb2+ ions in water utilizing the photonic structure of highly controlled hexagonal TiON/TiO2 nanotubes

Elsayed,

Ahmed,

Tammam

et al. 2024

Sci Rep

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The detection of heavy metals in water, especially Pb2+ ions, is important due to their severe hazardous effects. To address this issue, a highly controlled hexagonal TiON/TiO2 heterostructure has been synthesized in this study. The fabrication process involved the utilization of atomic layer deposition and direct current sputtering techniques to deposit TiO2 and TiON layers onto a porous Al2O3 membrane used as a template. The resulting heterostructure exhibits a well-ordered hollow tube structure with a diameter of 345 nm and a length of 1.2 µm. The electrochemical sensing of Pb2+ ions in water is carried out using a cyclic voltammetry technique under both light and dark conditions. The concentration range for the Pb2+ ions ranges from 10–5 to 10–1 M. The sensitivity values obtained for the sensor are 1.0 × 10–6 in dark conditions and 1.0 × 10–4 in light conditions. The remarkable enhancement in sensitivity under light illumination can be attributed to the increased activity and electron transfer facilitated by the presence of light. The sensor demonstrates excellent reproducibility, highlighting its reliability and consistency. These findings suggest that the proposed sensor holds great promise for the detection of Pb2+ ions in water, thereby facilitating environmental monitoring, water quality assessment, and safety regulation across various industries. Furthermore, the eco-friendly and straightforward preparation techniques employed in its fabrication provide a significant advantage for practical and scalable implementation.

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Poly(O-mercaptoaniline)-iodide nanofiber composite as a promising potentiometric sensor for the detection of Hg2+ ions in water

Alnuwaiser,

Rabia

2024

J Mater Sci: Mater Electron

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High-Performance pH Sensor Electrodes Based on a Hexagonal Pt Nanoparticle Array-Coated Nanoporous Alumina Membrane

Cited by 7 publications

References 59 publications

Impact of Rolled Graphene Oxide Grown on Polyaniline for Photodetection: Future Challenging Opto-Device

Impact of Rolled Graphene Oxide Grown on Polyaniline for Photodetection: Future Challenging Opto-Device

Sensing of heavy metal Pb2+ ions in water utilizing the photonic structure of highly controlled hexagonal TiON/TiO2 nanotubes

Poly(O-mercaptoaniline)-iodide nanofiber composite as a promising potentiometric sensor for the detection of Hg2+ ions in water

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