A Triazine-Based Analogue of Graphyne: Scalable Synthesis and Applications in Photocatalytic Dye Degradation and Bacterial Inactivation

Abstract

Graphyne, a theorized carbon allotrope possessing only sp- and sp² -hybridized carbon atoms, holds great potentials in many fields, especially in catalysis and energy-transfer/storage devices. Using a bottom-up strategy, we synthesized a new N-doped graphyne analogue, triazine- and 1,4-diethynylbenzene-based graphyne TA-BGY, in solution in gram-scale. The unique sp/sp² carbon-conjugated TA-BGY possesses an extended porous network structure with a BET surface area of approximately 300 m² g^-1 . Owing to its low optical band gap (1.44 eV), TA-BGY was expected to have many applications, which were exemplified by the photodegradation of methyl orange and photocatalytic bacterial inactivation.

Keywords: antibiosis; aromatic nucleophilic substitution reaction; graphyne analogue; hydroxyl radical; photocatalytic dye degradation.