Harmonious K–I–O co-modification of g-C₃N₄ for improved charge separation and photocatalysis

Abstract

Co-modification of graphitic carbon nitride (g-C3N4) photocatalysts can maximally optimize its intrinsic photoelectric structures, but usually involve complex multistep reactions, thus is challenging because the structural collapse and active sites...

Unraveling Structural Carboxyl Defects in g‐C3N4 for Improved Photocatalytic H2 Evolution via Alternating Hydrogen‐Oxygen‐Plasma Treatment

“…The O 1 s XPS spectra of H 2 ‐O 2 ‐pCN show clear carboxyl characteristics by enriched O–C=O signal. [ 33 ] These findings further support the generation and stable presence of –COOH defects in the H 2 ‐O 2 ‐pCN system, which was a reconstruction of g‐C 3 N 4 via the semi‐manufacture H 2 ‐pCN. The verified possible structure is highly consistent with the DFT modeling results.…”

Integration of Photo‐Fenton Reaction and Membrane Filtration using Lignin@t‐FeC2O4/g‐C3N4 Nanofibers Toward Accelerated Fe(III)/Fe(II) Cycling and Sustainability

“…Lignin@gC 3 N 4 has the largest fluorescence intensity (Figure 6a), which explains the lowest carrier isolation efficiency in Lignin@gC 3 N 4 . [51][52][53] After the composite with tFeC 2 O 4 , the PL peak intensity of Lignin@tFeC 2 O 4 /gC 3 N 4 showed a sig nificant decrease. The findings demonstrate that the photo generated carriers' recombination rate is weakened, resulting in improved separation efficiency.…”

The synthesis of porous graphitic carbon nitride with N3C nitrogen vacancies by a CaCO3 template for improved photocatalytic H2 evolution

“…Non-metallic graphitic carbon nitride (CN) is an appealing photocatalyst for H 2 generation due to its earthabundant character, visible-light response, facile synthesis and suitable redox ability. [9][10][11] However, the undesirable H 2 evolution activity of bulk CN owing to the low surface area, insufficient visible light utilization and poor photoelectric conversion efficiency blocks its large-scale industrial application. 12,13 Porous morphology design is an easy strategy to increase the surface area of photocatalysts, thereby facilitating the adsorption and diffusion of reactants, exposing more active sites and thus improving their photocatalytic H 2 production performance.…”

“…Non-metallic graphitic carbon nitride (CN) is an appealing photocatalyst for H 2 generation due to its earth-abundant character, visible-light response, facile synthesis and suitable redox ability. 9–11 However, the undesirable H 2 evolution activity of bulk CN owing to the low surface area, insufficient visible light utilization and poor photoelectric conversion efficiency blocks its large-scale industrial application. 12,13…”