In the present work, g-C₃N₄ nanosheets are prepared by calcination the mixture of urea and melamine. Resulting production is characterized by transmission electron microscope (TEM), X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, indicating an effective synthesis of g-C₃N₄ nanosheets. Phenolic coatings with addition of different content of g-C₃N₄ nanosheets are used to evaluate the tribological performance of g-C₃N₄ nanosheets as a role of enhancement phase. Bulk g-C₃N₄ and graphite are also utilized as fillers to further insight different wear mechanism under dry sliding condition. Experimental results show 1 wt% g-C₃N₄nanosheets/phenolic coating exhibit the optimal tribological properties. A higher surface area with more active sites and formation of a continuous transfer film are two important factors for the improvement.