Synthesis and Characterization of MgO-Filled Rectangular Carbon Nanocapsules

A novel MgO-filled rectangular carbon nanocapsules was fabricated by pyrolyzing acetonitrile with the assistance of MgO and a small quantity of Fe3+. The nanocapsules were analyzed by powder X-ray diffraction, transmission electron microscopy, and energy dispersive X-ray spectroscopy. The lengths of the rectangular nanocapsules sides range from 40 nm to 60 nm and the core part of the rectangular carbon nanocapsules consists of cubic phase MgO. A small quantity of Fe catalysts plays an important role in the growth of rectangular carbon nanocapsules.