Manufacturing a Modified Carbon Paste Electrode with Catalase Enzyme-Au Nanoparticles for Electrochemical Sensing of Hydrogen Peroxide and Their Electrocatalytic Properties

Sistani, Parisa; Noori, Akram; Motlagh, Masoomeh Fathollahi; Tamijani, Amir Habibi; Imani, Elahe; Shadram, Yeganeh; Rahimzadeh, Roya; Ebrahimi, Behnam; Sarebanhassanabadi, Mohammadtaghi; Negahdary, Masoud; Majdi, S.

doi:10.1016/s1452-3981(23)08041-0

Cited by 2 publications

References 26 publications

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Silver Nanoparticle Impregnated Porous Carbon as a Nonenzymatic Hydrogen Peroxide Sensor

Zou¹

2016

International Journal of Electrochemical Science

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In this work, a non-enzymatic hydrogen peroxide sensor has successfully been realized based on Ag nanoparticles doped carbon modified carbon paste electrode (AgNPs/C-CPE) in pH = 7 phosphate buffer solution (PBS). The Ag nanoparticles doped carbon composites (AgNPs/C) were synthesized by a simple one-step carbonization method using sucrose with AgNO 3 as the carbon precursor. AgNPs/C-CPE for electrochemical responds of hydrogen peroxide was explored by using cyclic voltammetry (CV) and amperometry. Besides, contents of AgNPs and pH values were optimized. The AgNPs/C-CPE containing 13.5 wt% AgNPs exhibits the highest electrocatalytic activity for the detection of hydrogen peroxide in pH = 7 PBS. At an applied potential of 0 V, the non-enzymatic sensor of hydrogen peroxide also showed a good linear relationship in a wide concentration range of 0.5-400 µM with a correlation coefficient of 0.9987, a detection limit of 0.3 μM at a signal-to noise ratio of 3, and a high sensitivity of 309.4 μA cm -2 mM -1 . The amorphous carbon-supported AgNPs not only avoided the use of chemical reductants but also improved the electrocatalytic activity and stability of Ag NPs.

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Silver Nanoparticle Impregnated Porous Carbon as a Nonenzymatic Hydrogen Peroxide Sensor

Zou¹

2016

International Journal of Electrochemical Science

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An electrochemical sensor based on Au nanoparticles for rapid determination of nitrofurazone in aquaculture seawater

He,

Chen,

Zhang

et al. 2024

Preprint

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An electrochemical sensor for the rapid detection of nitrofurazone in aquaculture seawater using a glassy carbon electrode (GCE) modified with Au nanoparticles (AuNPs) was constructed. Compared with the unmodified electrode, the modified electrode had higher electrocatalytic activity than the GCE and could be used for the detection of nitrofurazone efficiently. It could be found that the AuNPs modified electrode had higher specific surface area by the characterization of scanning electron microscopy. The effects of parameters such as electro-polymerization cycles for modified electrode preparation, the pH of the electrolyte for the detection of nitrofurazone were optimized. Under optimized experimental conditions, the peak current and concentration of nitrofurazone varied linearly in the range of 3 µM to 100 µM under square wave voltammetry (SWV), with the limit of detection of 0.24µM. The proposed sensor was successfully applied for the detection of nitrofurazone in aquaculture seawater, and the spiked recoveries were 96.35%-107% (RSD<4.13%), which indicated that the method has satisfactory accuracy and performance for the detection of nitrofurazone in real seawater.

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Manufacturing a Modified Carbon Paste Electrode with Catalase Enzyme-Au Nanoparticles for Electrochemical Sensing of Hydrogen Peroxide and Their Electrocatalytic Properties

Cited by 2 publications

References 26 publications

Silver Nanoparticle Impregnated Porous Carbon as a Nonenzymatic Hydrogen Peroxide Sensor

Silver Nanoparticle Impregnated Porous Carbon as a Nonenzymatic Hydrogen Peroxide Sensor

An electrochemical sensor based on Au nanoparticles for rapid determination of nitrofurazone in aquaculture seawater

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