A facile mechanochemical way to prepare g-C3N4

Under the conditions of high-energy ball milling, the reaction of C3N3Cl3 and Li3N has progressed in a high-efficient way. Carbon nitride with the atomic ratio of 1.23-1.30 for N to C that is very similar to the stoichiometry of C3N4 has been obtained. Moreover, XRD reveals that with the prolonging of the milling time, the products can be soon transformed to comparatively well-crystallized graphitic carbon nitride (g-C3N4). SEM investigations show the products have the glassy morphology with different dimension from micron to nano scales. The XPS analysis shows the products have the presumable element compositions and the chemical bond state.