One-dimensional CoPt nanorods and their anomalous IR optical properties

• Published in: Journal of solid state chemistry 2010-06, Vol.183 (6), p.1340-1346
• Main Authors: Zhou, X.W., Zhang, R.H., Zeng, D.M., Sun, S.G.
• Format: Article
• Language: English
• Subjects: Abnormal infrared effects; ALLOYS; CHEMICAL REACTIONS; CHEMISTRY; COBALT ALLOYS; Cobalt base alloys; Cobalt compounds; COHERENT SCATTERING; Condensed matter: electronic structure, electrical, magnetic, and optical properties; CoPt nanorods; Cross-disciplinary physics: materials science; rheology; DIFFRACTION; ELECTROCHEMISTRY; ELECTRON MICROSCOPY; Exact sciences and technology; In situ FTIRs; INFRARED SPECTRA; Intermetallics; Materials science; Methods of nanofabrication; MICROSCOPY; MORPHOLOGY; Nanomaterials; Nanorods; Nanoscale materials and structures: fabrication and characterization; NANOSCIENCE AND NANOTECHNOLOGY; NANOSTRUCTURES; OPTICAL PROPERTIES; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation; Optical properties of bulk materials and thin films; Other topics in nanoscale materials and structures; OXIDATION; PHYSICAL PROPERTIES; Physics; PLATINUM ALLOYS; Platinum compounds; PLATINUM METAL ALLOYS; Quantum wires; SCANNING ELECTRON MICROSCOPY; SCATTERING; SPECTRA; SPECTROSCOPY; THIN FILMS; TRANSITION ELEMENT ALLOYS; TRANSMISSION ELECTRON MICROSCOPY; VOLTAMETRY; X-RAY DIFFRACTION; X-RAY SPECTROSCOPY; X-rays
• ISSN: 0022-4596; 1095-726X
• DOI: 10.1016/j.jssc.2010.04.003

One-dimensional (1D) CoPt nanorods were synthesized by a galvanic displacement reaction. The morphology of the nanomaterials was characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM) and X-ray powder diffraction (XRD). Energy-dispersive X-ray spectroscopy (EDS) analysis confirmed the coexistence of Co and Pt in the 1D nanorods. Studies of cyclic voltammetry (CV) demonstrated that the 1D CoPt nanorods exhibit a better electrocatalytic property for CO oxidation than that of bulk Pt electrode does. In situ electrochemical FTIRS illustrated, for the first time, that the 1D CoPt nanorods display abnormal infrared effects (AIREs), which was previously revealed mainly on 2D film nanomaterials. It has revealed, for the first time, that the 1D CoPt nanorods present abnormal infrared effects (AIREs). The substrate materials do not affect significantly the anomalous IR features.