Controlled synthesis and optical properties of Cu/C core/shell nanoparticles

• Published in: Journal of nanoparticle research : an interdisciplinary forum for nanoscale science and technology 2014-08, Vol.16 (8), p.1-8, Article 2545
• Main Authors: Ma, Liang, Yu, Bowen, Wang, Shiliang, Su, Geng, Huang, Han, Chen, Hong, He, Yuehui, Zou, Jin
• Format: Article
• Language: English
• Subjects: Carbon; Characterization and Evaluation of Materials; CHEMICAL VAPOR DEPOSITION; Chemistry and Materials Science; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Copper; Cores; Cross-disciplinary physics: materials science; rheology; Crystallinity; Exact sciences and technology; FABRICATION; Fluorescence; Fullerenes and related materials; Fullerenes and related materials; diamonds, graphite; Inorganic Chemistry; Lasers; Materials Science; Methods of nanofabrication; Nanoparticles; Nanotechnology; Optical Devices; OPTICAL PROPERTIES; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation; Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures; Optics; PARTICLES; Photonics; Physical Chemistry; Physics; Research Paper; Shells; Specific materials; Spectral emissivity; Synthesis; Visible and ultraviolet spectra
• ISSN: 1388-0764; 1572-896X
• DOI: 10.1007/s11051-014-2545-5

Copper–carbon core–shell nanoparticles were synthesized on a large scale by metal–organic chemical vapor deposition using copper (II) acetylacetonate as precursor. It was shown that the thickness of carbon shell and the diameter of copper cores could be easily tuned from 1.5 to 7.9 nm and from 15 to 21 nm, respectively, by controlling the reaction temperature and the flow of carrier gas in the synthesis process. The ultraviolet–visible absorption and fluorescence spectral analyses demonstrated that the thickness and crystallinity of the carbon shells had a significant effect on the surface-plasmon resonance band and the fluorescence emission properties of the copper nanocores, which suggested that the carbon shells could remarkably change the surface electronic states of the copper cores.