Exploring the evolution patterns of melem from thermal synthesis of melamine to graphitic carbon nitride. Issue 37 (26th August 2022)

• Record Type: Journal Article
• Authors: Yi, Yuhui; Wang, Jie; Niu, Yingli; Yu, Yu; Wu, Songmei; Ding, Kejian
• Is Part Of: RSC advances. Volume 12:Issue 37(2022)
• Page Start: 24311
• Page End: 24318
• Publication Date: 2022-08-26
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/d2ra03337b
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : In the exploration of synthesizing graphitic carbon nitride (g-C3 N4 ), the existence of secondary anime bridging units shows the incompleteness of related theories. Abstract : In the exploration of synthesizing graphitic carbon nitride (g-C3 N4 ), the existence of secondary anime bridging units shows the incompleteness of related theories. Thus, taking the thermal synthesis of melamine as an example, this work finds a possible reaction path with Density Functional Theory (DFT) for forming melem during the thermal synthesis of g-C3 N4 . Combined with transition state theory (TST), it indicates that the formation of melem results from the condensation of melamine and isomerization of melam. Meanwhile, the weak signal near 2135 cm −1 in the Fourier Transform Infrared Spectra (FTIR) corresponds to the vibration of carbodi-imines (–NCN–), which further proves the proposed reaction path. Thus, this work can explain the formation of g-C3 N4 and its monomer, which may contribute to the successful formation of ideal g-C3 N4 in the future.