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Carbon Shell (carbon + shell)
Selected AbstractsTrapping Metallic Liquid Mercury in a Carbon Shell by the Decomposition of Dimethyl Mercury,ADVANCED MATERIALS, Issue 5 2008A. Gedanken An efficient single-step synthesis of mercury droplets covered with a carbon shell by the thermolysis of dimethyl mercury under its autogenic pressure is described. This is a unique case in which a liquid metal is trapped inside a nano- and micrometer size carbon capsule. The air-stability and the characterization by XRD, TEM, DSC, HRSEM, and HRTEM of this composite are reported. [source] Uniform Hollow Carbon Shells: Nanostructured Graphitic Supports for Improved Oxygen-Reduction Catalysis,ANGEWANDTE CHEMIE, Issue 39 2010Zachary L. Schaefer C-Schalenkatalysatoren: Einheitliche hohle Nanoschalen aus graphitischem Kohlenstoff wurden durch Phasentrennung von Ni3C-Nanopartikeln (NPs) und chemisches Auswaschen des Nickelkerns synthetisiert (siehe Bild). Auf der Schale verankerte Pt-NPs erwiesen sich als hochaktiv bei der Sauerstoffreduktion. [source] Triplex Au,Ag,C Core,Shell Nanoparticles as a Novel Raman LabelADVANCED FUNCTIONAL MATERIALS, Issue 6 2010Aiguo Shen Abstract Monodispersed, readily-grafted, and biocompatible surface-enhanced Raman spectroscopic (SERS) tagging materials are developed; they are composed of bimetallic Au@Ag nanoparticles (NPs) for optical enhancement, a reporter molecule for spectroscopic signature, and a carbon shell for protection and bioconjugation. A controllable and convenient hydrothermal synthetic route is presented to synthesize the layer-by-layer triplex Au,Ag,C core,shell NPs, which can incorporate the Raman-active label 4-mercapto benzoic acid (4-MBA). The obtained gold seed,silver coated particles can be coated further with a thickness-controlled carbon shell to form colloidal carbon-encapsulated Aucore/Agshell spheres with a monodisperse size distribution. Furthermore, these SERS-active spheres demonstrated interesting properties as a novel Raman tag for quantitative immunoassays. The results suggest such SERS tags can be used for multiplex and ultrasensitive detection of biomolecules as well as nontoxic, in vivo molecular imaging of animal or plant tissues. [source] Trapping Metallic Liquid Mercury in a Carbon Shell by the Decomposition of Dimethyl Mercury,ADVANCED MATERIALS, Issue 5 2008A. Gedanken An efficient single-step synthesis of mercury droplets covered with a carbon shell by the thermolysis of dimethyl mercury under its autogenic pressure is described. This is a unique case in which a liquid metal is trapped inside a nano- and micrometer size carbon capsule. The air-stability and the characterization by XRD, TEM, DSC, HRSEM, and HRTEM of this composite are reported. [source] | ||||||||||