Crystalline carbon nitrides for photocatalysis

Abstract

Photocatalysis is considered as an effective approach to address energy and environmental issues. Carbon nitride (CN) is a promising metal-free semiconductor photocatalyst because of its unique properties such as tunable...

Prompt Charge Separation at Crystalline–Amorphous Interfaces of Poly(heptazine imides) for Photocatalytic Hydrogen Evolution

“…The transient photocurrent spectra in Figure S7 show that the photocurrent intensity of PHI-Na 4.5 surpasses that of PHI, despite PHI exhibiting higher crystallinity compared to that of PHI-Na 4.5 . All of the results indicate that the C–A structure in the PHI-Na 4.5 sample positively affects electron transport …”

“…All of the results indicate that the C−A structure in the PHI-Na 4.5 sample positively affects electron transport. 29 The photocatalytic activities of the PHI-Na X samples were evaluated in an assay of H 2 production from water. Figure 4a shows that the photocatalytic hydrogen production performance of PHI-Na X was initially increased and subsequently decreased with the addition of NaCl.…”

Crystallinity engineering of carbon nitride protective coating for ultra‐stable Zn metal anodes

“…Due to the stable physicochemical properties, a mixture of LiCl, KCl, and NaCl was selected as the processing media. 22,23 CCN was prepared through molten salt processing of pristine CN, which creates a liquid environment to induce the structural ordering of CN intermediates and increases crystallinity. 16,24 The crystallinity enhancement of CCN can be clearly confirmed by the presence of a peak at 8.1°in the X-ray diffraction pattern (Figure 2B), which is the characteristic peak of PHI, the highly crystalline phase of carbon nitride, with enlarged in-plane periodicity.…”