Synthesis and Characterization of SnO_2 Nanobelts by Carbothermal Reduction of SnO_2 Powder

The mixture of SnO_2 powder and graphite was ground to ensure complete mixing,and was put into an alumina boat,then this boat was placed in the hot zone of the tube,heated from room temperature to 1100℃and kept at this temperature for 2.5h in flowing argon.The X-ray diffraction analysis(XRD)indicates that the nanobelts are tetragonal futile structure of SnO_2.Scaning electron microscope(SEM)and transmission electron microscope(TEM)observations reveal that the nanobelts are uniform.The selected-area electron diffraction analysis(SAED)demonstrates that the nanobelts are single crystal.The SnO_2 nanobelts might grow via a vapor-solid(VS)process.