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Abstract
Background: Hydrogen peroxide (H2O2) is a common reagent in the production and living, but excessive H2O2 may enhance the danger to the human body. Consequently, it is very important to develop economical, fast and accurate techniques for detecting H2O2.
Methods: A simple two-step electrodeposition process was applied to synthesize Pd-Cu/Cu2O nanocomposite for non-enzymatic H2O2 sensor. Cu/Cu2O nanomaterial was firstly electrodeposited on FTO by potential oscillation technique, and then Pd nanoparticles were electrodeposited on Cu/Cu2O nanomaterial by cyclic voltammetry. The chemical structure, component, and morphology of the synthesized Pd-Cu/Cu2O nanocomposite were characterized by X-ray diffraction, scanning electron microscopy and X-ray photoelectron spectroscopy. The electrochemical properties of Pd-Cu/Cu2O nanocomposite were studied by cyclic voltammetry and amperometry.
Results: Under optimal conditions, the as-fabricated sensor displayed a broad linear range (5-4000 μM) and low detection limit (1.8 μM) for the determination of H2O2. The proposed sensor showed good selectivity and reproducibility. Meanwhile, the proposed sensor has been successfully applied to detect H2O2 in milk.
Conclusion: The Pd-Cu/Cu2O/FTO biosensor exhibits excellent electrochemical activity for H2O2 reduction, which has great potential application in the field of food safety.
Keywords: Pd-Cu/Cu2O, nanocomposite, determination, electrodeposition, H2O2, electrochemical sensor.
Current Analytical Chemistry
Title:A Two-step Electrodeposition of Pd-Cu/Cu2O Nanocomposite on FTO Substrate for Non-enzymatic Hydrogen Peroxide Sensor
Volume: 17 Issue: 9
Author(s): Ke Huan, Li Tang, Dongmei Deng*, Huan Wang, Xiaojing Si*, Xiaoxia Yan and Liqiang Luo*
Affiliation:
- College of Sciences, Shanghai University, Shanghai 200444,China
- Department of Food Science, Shanghai Business School, Shanghai, 200235,China
- College of Sciences, Shanghai University, Shanghai 200444,China
Keywords: Pd-Cu/Cu2O, nanocomposite, determination, electrodeposition, H2O2, electrochemical sensor.
Abstract:
Background: Hydrogen peroxide (H2O2) is a common reagent in the production and living, but excessive H2O2 may enhance the danger to the human body. Consequently, it is very important to develop economical, fast and accurate techniques for detecting H2O2.
Methods: A simple two-step electrodeposition process was applied to synthesize Pd-Cu/Cu2O nanocomposite for non-enzymatic H2O2 sensor. Cu/Cu2O nanomaterial was firstly electrodeposited on FTO by potential oscillation technique, and then Pd nanoparticles were electrodeposited on Cu/Cu2O nanomaterial by cyclic voltammetry. The chemical structure, component, and morphology of the synthesized Pd-Cu/Cu2O nanocomposite were characterized by X-ray diffraction, scanning electron microscopy and X-ray photoelectron spectroscopy. The electrochemical properties of Pd-Cu/Cu2O nanocomposite were studied by cyclic voltammetry and amperometry.
Results: Under optimal conditions, the as-fabricated sensor displayed a broad linear range (5-4000 μM) and low detection limit (1.8 μM) for the determination of H2O2. The proposed sensor showed good selectivity and reproducibility. Meanwhile, the proposed sensor has been successfully applied to detect H2O2 in milk.
Conclusion: The Pd-Cu/Cu2O/FTO biosensor exhibits excellent electrochemical activity for H2O2 reduction, which has great potential application in the field of food safety.
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Cite this article as:
Huan Ke , Tang Li , Deng Dongmei *, Wang Huan , Si Xiaojing *, Yan Xiaoxia and Luo Liqiang *, A Two-step Electrodeposition of Pd-Cu/Cu2O Nanocomposite on FTO Substrate for Non-enzymatic Hydrogen Peroxide Sensor, Current Analytical Chemistry 2021; 17 (9) . https://dx.doi.org/10.2174/1573411017666210520153409
DOI https://dx.doi.org/10.2174/1573411017666210520153409 |
Print ISSN 1573-4110 |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-6727 |
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