Copolymerization with 2,4,6-Triaminopyrimidine for the Rolling-up the Layer Structure, Tunable Electronic Properties, and Photocatalysis of g-C3N4
Citations Over TimeTop 10% of 2015 papers
Abstract
Copolymerization with 2,4,6-triaminopyrimidine (TAP) is developed for precise substitution of one nitrogen with carbon atom in the triazine ring of polymeric g-C3N4. Direct incorporation of C4N2 ring from TAP into the network retains the structural features of g-C3N4, but induces the rolling-up of g-C3N4 sheets into tubular configuration. The band gap energy is narrowed from 2.7 to 2.4 eV by a negative shift of valence band of the g-C3N4 photocatalyst, which enhances charge-carrier migration and separation, leading to higher photocatalytic activity for NO gas pollutant removal. It is attributed to the decrease of the π-deficiency and the generation of imbalanced electron density in π-electron conjugated units of g-C3N4 by TAP incorporation. This work provides a significant technique for precise control of heteroatom in the framework of g-C3N4 to finely adjust its intrinsic electronic properties and its photocatalytic properties.
Related Papers
- → DERIVATIVES OF STEROIDS WITH CONDENSED HETEROCYCLES(1967)23 cited
- → Heterocyclic Chemistry Using Microwave‐Assisted Approaches(2005)21 cited
- → Four-Membered Ring Systems(1991)5 cited
- → Literature Survey Part C: Heterocycle Synthesis(2012)2 cited
- → Five-Membered Ring Systems: With N and S (Se) Atoms(1989)2 cited