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:
- 2018
- Trang:
- 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.
