2D heterojunction of C, N, S co-doped TiO2/g-C3N4 nanosheet with high-speed charge transport toward highly efficient photocatalytic activity

Over the past decade, graphitic carbon nitride (g-C3N4) has emerged as a universal photocatalyst toward various sustainable carbo-neutral technologies. Despite solar applications discrepancy, g-C3N4 is still confronted with a general fatal issue of insufficient supply of thermodynamically active photocarriers due to its inferior solar harvesting ability and sluggish charge transfer dynamics. Fortunately, this could be significantly alleviated by the “all-in-one” defect engineering strategy, which enables a simultaneous amelioration of both textural uniqueness and intrinsic electronic band structures. To this end, we have summarized an unprecedently comprehensive discussion on defect controls including the vacancy/non-metallic dopant creation with optimized electronic band structure and electronic density, metallic doping with ultra-active coordinated environment (M–Nx, M–C2N2, M–O bonding), functional group grafting with optimized band structure, and promoted crystallinity with extended conjugation π system with weakened interlayered van der Waals interaction. Among them, the defect states induced by various defect types such as N vacancy, P/S/halogen dopants, and cyano group in boosting solar harvesting and accelerating photocarrier transfer have also been emphasized. More importantly, the shallow defect traps identified by femtosecond transient absorption spectra (fs-TAS) have also been highlighted. It is believed that this review would pave the way for future readers with a unique insight into a more precise defective g-C3N4 “customization”, motivating more profound thinking and flourishing research outputs on g-C3N4-based photocatalysis.

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Synthesis of AgCl/ZIF-8/C–TiO2 heterojunction photocatalysts for enhanced degradation of levofloxacin under visible-light

Ali,

Ammar,

Ali

et al. 2024

Materials Science in Semiconductor Processing

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2D heterojunction of C, N, S co-doped TiO2/g-C3N4 nanosheet with high-speed charge transport toward highly efficient photocatalytic activity

Cited by 3 publications

References 55 publications

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A novel S-type porous g-C3N4/In2S3 heterojunction photocatalyst for efficient of CBZ degradation under visible light

Decade Milestone Advancement of Defect-Engineered g-C3N4 for Solar Catalytic Applications

Synthesis of AgCl/ZIF-8/C–TiO2 heterojunction photocatalysts for enhanced degradation of levofloxacin under visible-light

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