An ultra-sensitive electrochemical sensor for hydrazine based on AuPd nanorod alloy nanochains. (20th March 2016)

• Record Type: Journal Article
• Authors: Liu, Yan; Chen, Sai-Sai; Wang, Ai-Jun; Feng, Jiu-Ju; Wu, Xilin; Weng, Xuexiang
• Is Part Of: Electrochimica acta. Volume 195(2016)
• Page Start: 68
• Page End: 76
• Publication Date: 2016-03-20
• Subjects: Bimetallic alloy -- One-step wet-chemical method -- Nanorod chains -- 4-Aminopyridine -- Hydrazine; Electrochemistry -- Periodicals; Electrochemistry, Industrial -- Periodicals; 541.37
• DOI: 10.1016/j.electacta.2016.01.229
• Languages: English
• ISSNs: 0013-4686

Abstract

Graphical abstract: Highlights: AuPd NRCs were synthesized by a simple one-pot wet-chemical approach. 4-Aminopyridine was used as the structure-director and stabilizing agent. The nanocrystals showed excellent catalytic behavior toward hydrazine oxidation. The sensor displayed wide linear range, low detection limit and high sensitivity. Abstract: In this work, bimetallic alloyed AuPd nanorod chains (NRCs) were synthesized by a rapid and simple one-step wet-chemical method, using 4-aminopyridine (4-AP) as the structure director and stabilizing agent, while no any seed, polymer or surfactant was involved during the synthetic process. The architecture was characterized by transmission electron microscopy (TEM) and high-resolution TEM, high-angle annular dark-field scanning TEM (HAADF-STEM), energy-dispersive X-ray spectrometer (EDS) patterns and EDS line scanning profiles, X-ray diffraction, and X-ray photoelectron spectroscopy. An amperometric sensor for hydrazine detection was constructed, and exhibited wide linear range of 0.10–501.00 μM and low detection limit (S/N = 3) of 0.02 μM with ultra-high sensitivity, revealing the improved electroanalytical performance for hydrazine determination.