A highly sensitive electrochemical sensor based on Cu/Cu2O@carbon nanocomposite structures for hydrazine detection. Issue 21 (1st October 2015)

• Record Type: Journal Article
• Authors: Zhao, Zhenting; Wang, Ying; Li, Pengwei; Sang, Shengbo; Zhang, Wendong; Hu, Jie; Lian, Kun
• Is Part Of: Analytical methods. Volume 7:Issue 21(2015)
• Page Start: 9040
• Page End: 9046
• Publication Date: 2015-10-01
• Subjects: Chemistry, Analytic -- Periodicals; Analytical biochemistry -- Periodicals; Chemical laboratories -- Standards -- Periodicals; 543.1905
• DOI: 10.1039/c5ay02122g
• Languages: English
• ISSNs: 1759-9660

Abstract

Abstract : A kind of carbon-coated Cu/Cu2 O nanocomposite material (Cu/Cu2 O@carbon) was coated on a glassy carbon electrode for electrochemical detection of hydrazine (N2 H4 ). Abstract : We report a simple and large-scale fabrication of carbon-coated Cu/Cu2 O nanocomposite materials (Cu/Cu2 O@carbon) and their application as sensing materials for hydrazine detection in a neutral medium. The Cu/Cu2 O@carbon nanocomposite structures were successfully synthesized using a facile, cost-effective calcination method. The morphology, crystalline structure, and composition of the prepared Cu/Cu2 O@carbon were characterized by scanning electron microscopy, X-ray diffraction, energy dispersive spectroscopy and high-resolution transmission electron microscopy. The hydrazine electrochemical sensor was fabricated by painting Cu/Cu2 O@carbon on a glassy carbon electrode and immobilized using Nafion. By optimizing the Cu/Cu2 O@carbon modified quantity and evaluating the performance using cyclic voltammetry and amperometry techniques, we demonstrated an optimal hydrazine electrochemical sensor with a high sensitivity of 2.37 μA μM −1 cm −2, an excellent linear concentration range of 0.25 μM to 800 μM, and a low detection limit of 0.022 μM.