期刊
CHEMISTRY OF MATERIALS
卷 18, 期 15, 页码 3486-3494出版社
AMER CHEMICAL SOC
DOI: 10.1021/cm052648m
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A general and facile one-pot hydrothermal method was developed to prepare oxide@C core-shell nanostructures with carbonaceous polysaccharide shells and oxides (including hydroxides or complex oxides) cores. Coupled synthesis or post-synthesis approaches can be applied. As-formed particles possess hydrophilic and biocompatible shells and variable cores, thus have promising applications in the areas such as life science or colloid science. The nanostructures can be transformed to a metal@C core/shell structure or hollow carbon structure. Samples were characterized with X-ray diffraction, transmission electron microscopy, high-resolution transmission electron microscopy, electron energy loss spectroscopy, and Fourier transform infrared spectroscopy. Electrochemical characterization on calcined SnO2@C nanostructures showed unusual reversible Li storage capacities. This implies the structural optimization might provide new opportunities to enhance the properties of solids in nanoscale.
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