Thin-Walled Carbon Nanocages: Direct Growth, Characterization, and Applications


  • J.N.W. thanks the Outstanding Youth Fund from the National Natural Science Foundation of China and the National 863 Project of 2007AA05Z128 from The Ministry of Science and Technology of China. Supporting Information is available online from Wiley InterScience or from the author.


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Carbon nanocages with one or a few graphitic layers (see figure) are directly grown in the solid state by heat treatment of a carbon–iron mixture at low temperature. Such thin-walled nanocages have a fine size of 3–12 nm and a high surface area of 535 m2 g–1. They are are a superb catalyst support for low-temperature fuel cells and could be applicable in many other fields.