Abstract
Graphite-like C3N3+xHy with s-triazine rings as building blocks were synthesized through a facile one-pot approach. It is surprising that the degree of crystallinity of the synthesized sample at 330°C (sample CNH-330) was remarkably enhanced by the dilute hydrochloric acid treatment. The mechanism of the acid-induced crystallinity enhancement was preliminarily studied. XRD, FTIR, SEM, photoluminescence spectra, elemental analysis, and XPS were performed to investigate the composition and structure of the obtained samples. The remarkable enhancement of the degree of crystallinity may be attributed to the ordered formation of ammonium-salt-like structure by the reaction of HCl with NH or NH2 in CNH-330.
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