A novel miniaturized pH potentiometric electrode based on a nano bismuth oxide film deposited on a fluorine doped nano tin oxide glass substrate

A novel thin film of bismuth oxide (Bi2O3) deposited on a fluorine doped tin oxide glass substrate (FTO), using a spray pyrolysis technique, was prepared and used as a pH sensing membrane. The deposited Bi2O3 film was characterized using X-ray diffraction (XRD), field emission scanning electron micr...

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Veröffentlicht in:Sensors and actuators. B, Chemical Chemical, 2023-04, Vol.380, p.133397, Article 133397
Hauptverfasser: Hassan, Saad S.M., Fathy, Mahmoud Abdelwahab, Moussa, Ibrahim, Obaida, M., Kamel, Ayman H.
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container_title Sensors and actuators. B, Chemical
container_volume 380
creator Hassan, Saad S.M.
Fathy, Mahmoud Abdelwahab
Moussa, Ibrahim
Obaida, M.
Kamel, Ayman H.
description A novel thin film of bismuth oxide (Bi2O3) deposited on a fluorine doped tin oxide glass substrate (FTO), using a spray pyrolysis technique, was prepared and used as a pH sensing membrane. The deposited Bi2O3 film was characterized using X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), energy-dispersive X-ray spectroscopy (EDS), and atomic force microscopy (AFM). Film prepared by pyrolysis at 550 °C displayed a tetragonal β-phase of Bi2O3 with a porous structure, high roughness surface and nano cracks. The fabricated Bi2O3/FTO film was used as a miniaturized potentiometric electrode for monitoring a wide range of pH (pH 2 – 12) in aqueous solutions. The electrode exhibited an ideal near-Nernstian response (slope of −60.2 ± 0.3 mV/decade), high potential stability, mechanical durability and good selectivity toward some common interfering cations and anions, supporting its applicability for quality control/quality assurance purposes. The performance characteristics of the electrode and validation measurements, according to the standard methods, were evaluated. The Bi2O3/FTO-based electrode was satisfactorily used for monitoring the pH of some real water, beverages and fruit juice samples and the results compared fairly well with data obtained by the conventional pH glass electrode. [Display omitted] •Preparation of pH electrode based on bismuth based nano material.•Electrochemical impedance spectroscopy (EIS) measurements of the electrodes are described.•The electrode is used for accurate measurement of pH of real natural samples.
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The deposited Bi2O3 film was characterized using X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), energy-dispersive X-ray spectroscopy (EDS), and atomic force microscopy (AFM). Film prepared by pyrolysis at 550 °C displayed a tetragonal β-phase of Bi2O3 with a porous structure, high roughness surface and nano cracks. The fabricated Bi2O3/FTO film was used as a miniaturized potentiometric electrode for monitoring a wide range of pH (pH 2 – 12) in aqueous solutions. The electrode exhibited an ideal near-Nernstian response (slope of −60.2 ± 0.3 mV/decade), high potential stability, mechanical durability and good selectivity toward some common interfering cations and anions, supporting its applicability for quality control/quality assurance purposes. The performance characteristics of the electrode and validation measurements, according to the standard methods, were evaluated. The Bi2O3/FTO-based electrode was satisfactorily used for monitoring the pH of some real water, beverages and fruit juice samples and the results compared fairly well with data obtained by the conventional pH glass electrode. [Display omitted] •Preparation of pH electrode based on bismuth based nano material.•Electrochemical impedance spectroscopy (EIS) measurements of the electrodes are described.•The electrode is used for accurate measurement of pH of real natural samples.</description><identifier>ISSN: 0925-4005</identifier><identifier>EISSN: 1873-3077</identifier><identifier>DOI: 10.1016/j.snb.2023.133397</identifier><language>eng</language><publisher>Lausanne: Elsevier B.V</publisher><subject>Aqueous solutions ; Beverages ; Bismuth oxides ; Bismuth trioxide ; Control charts ; Electrodes ; Field emission microscopy ; Fluorine ; Fluorine doped nano tin oxide glass ; Glass substrates ; Method validation ; Microscopy ; Monitoring ; Nano bismuth oxide film ; Oxide coatings ; pH electrode ; Quality assurance ; Quality control ; Selectivity ; Spray pyrolysis ; Thin films ; Tin oxides</subject><ispartof>Sensors and actuators. 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B, Chemical</title><description>A novel thin film of bismuth oxide (Bi2O3) deposited on a fluorine doped tin oxide glass substrate (FTO), using a spray pyrolysis technique, was prepared and used as a pH sensing membrane. The deposited Bi2O3 film was characterized using X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), energy-dispersive X-ray spectroscopy (EDS), and atomic force microscopy (AFM). Film prepared by pyrolysis at 550 °C displayed a tetragonal β-phase of Bi2O3 with a porous structure, high roughness surface and nano cracks. The fabricated Bi2O3/FTO film was used as a miniaturized potentiometric electrode for monitoring a wide range of pH (pH 2 – 12) in aqueous solutions. The electrode exhibited an ideal near-Nernstian response (slope of −60.2 ± 0.3 mV/decade), high potential stability, mechanical durability and good selectivity toward some common interfering cations and anions, supporting its applicability for quality control/quality assurance purposes. The performance characteristics of the electrode and validation measurements, according to the standard methods, were evaluated. The Bi2O3/FTO-based electrode was satisfactorily used for monitoring the pH of some real water, beverages and fruit juice samples and the results compared fairly well with data obtained by the conventional pH glass electrode. 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The Bi2O3/FTO-based electrode was satisfactorily used for monitoring the pH of some real water, beverages and fruit juice samples and the results compared fairly well with data obtained by the conventional pH glass electrode. [Display omitted] •Preparation of pH electrode based on bismuth based nano material.•Electrochemical impedance spectroscopy (EIS) measurements of the electrodes are described.•The electrode is used for accurate measurement of pH of real natural samples.</abstract><cop>Lausanne</cop><pub>Elsevier B.V</pub><doi>10.1016/j.snb.2023.133397</doi></addata></record>
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subjects Aqueous solutions
Beverages
Bismuth oxides
Bismuth trioxide
Control charts
Electrodes
Field emission microscopy
Fluorine
Fluorine doped nano tin oxide glass
Glass substrates
Method validation
Microscopy
Monitoring
Nano bismuth oxide film
Oxide coatings
pH electrode
Quality assurance
Quality control
Selectivity
Spray pyrolysis
Thin films
Tin oxides
title A novel miniaturized pH potentiometric electrode based on a nano bismuth oxide film deposited on a fluorine doped nano tin oxide glass substrate
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