Tên bài báo:

Cyclic voltammetry, square wave voltammetry, electrochemical impedance spectroscopy and colorimetric method for hydrogen peroxide detection based on chitosan/silver nanocomposite
Tác giả:
Trần Vĩnh Hạnh
Tham gia cùng:
Tạp chí:
Arabian Journal of Chemistry
Năm xuất bản:
Từ trang 453 đến trang 459
Lĩnh vực:
Khoa học cơ bản
Phạm vi:
Quốc tế

Tóm tắt:

In this paper, we demonstrate a promising method to fabricate a non-enzymatic stable, highly sensitive and selective hydrogen peroxide sensor based on a chitosan/silver nanoparticles (CS/AgNPs) hybrid. Using this composite, we elaborated both electrochemical and colorimetric sensors for hydrogen peroxide detection. The colorimetric sensor is based on a homogenous reaction which fades the color of CS/AgNPs solutions from red-orange to colorless depending on hydrogen peroxide concentration. For the electrochemical sensor, CS/AgNPs were immobilized on glassy carbon electrodes and hydrogen peroxide was measured using cyclic voltammetry, square wave voltammetry and electrochemical impedance spectroscopy. The response time is less than 10 s and the detection limit is 5 μM.

Từ khóa:

Spectrophotometric detection Electrochemical impedance spectroscopy Square wave voltammetry Cyclic voltammetry Chitosan/silver nanoparticles (CS/AgNPs) hybrid Hydrogen peroxide
Thông tin tác giả
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Trần Vĩnh Hạnh

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