二维超薄g-C3N4纳米片的制备及其光电催化性能研究

In this work, the bulk g-C3N4 powders were synthesized by directly heating melamine at high temperature and the g-C3N4 nanosheets (g-C3N4 NS) was prepared by ultrasonic exfoliation in isopropyl alcohol. And then powder g-C3N4 catalyst was made as film electrodes on ITO glass by drop coating method. A standard three-electrode configuration was employed in the photocurrent measurement. The morphologies and structures of samples were characterized by FE-SEM and XRD. The results showed that the g-C3N4 NS was prepared by ultrasonic exfoliation successfully with a stable dispersion and the basic g-C3N4 atomic structures were largely retained after exfoliated. Photoelectric catalytic performance tests indicated that light current was increased by 6 times after exfoliation which implied better photoelectric catalytic properties.