Two-Dimensional Nanomaterial g-C3N4 in Application of Electrochemiluminescence

Electrochemiluminescence ( ECL) combines the characteristics of electrochemistry and chemiluminescence. Because of its high sensitivity. wide linear range and low background interference. electrochemiluminescence has attracted the attention of many researchers in analytical science. Although the traditional luminescent materials of ECL have high luminous efficiency. they still have some disadvantages. such as high price. lower sample load. etc. g-C3N4 is a kind of metal.free semiconductor nanomaterial. which is based on triazine ring or heptazine ring as the basic structural unit. g-C3N4 is a two.dimensional graphite.like layered structure bonded by vander Waals forces between layers and C-N covalent bonds within layers. Since g-C3N4 was first discovered to have ECL performance in 2012. it had been widely used in the development and fabrication of ECL sensors, due to its advantages, such as stable property, unique band structure, good biocompatibility, better environmental performance, easy to function, inexpensive ingredients and simple preparation process. The research progresses of g-C3N4 in ECL sensor construction in recent years were reviewed, according to the mechanism of ECL luminescence, the effect of sensor, the signal type of sensor, and the different types of detection objects. And the challenges and prospects of g-C3N4 in ECL development were described as well.