Chemcial preparation and characterization of nitrogen-richcarbon nitride prwders

摘要

Creamy white powders were obtiane by the chemical vapor reaction of carbon tetrachloride and ammonia at 1000 deg C,followed by washign with boiling water.The composition of te material was C_3N_5.5O_0.5H_5.4,having a nitrogen content greatr than that of the hypothetica hard material C_3N4.The powders wereharder than quartz whose Mhs hardness is 7,but were not as hard assaphire (Mohs hardness:9).The hardness could be explained by the C-N sngle bond observed in the ESCA C1s spectrum.The material washied with boiling watr showed photluminescence,which was mostly bright and white-blue in color to the naked eye.