Structure modulation of g-C3N4 in TiO2{001}/g-C3N4 hetero-structures for boosting photocatalytic hydrogen evolution
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In this article, the structure design of photocatalysts is highly desirable for taking full advantage of their abilities for H2 evolution, and the highly efficient TiO2{001}/g-C3N4 (TCN) heterostructures have been fabricated successfully via an in situ ethanol-thermal method.Abstract:
Structure design of photocatalysts is highly desirable for taking full advantage of their abilities for H2 evolution. Herein, the highly-efficient TiO2{001}/g-C3N4 (TCN) heterostructures have been fabricated successfully via an in situ ethanol-thermal method. And the structure of g-C3N4 in the TCN heterostructures could be exfoliated from bulk g-C3N4 to nanosheets, nanocrystals and quantum dots with the increase of the synthetic temperature. Through detailed characterization, the structural evolution of g-C3N4 could be attributed to the enhanced temperature of the ethanol-thermal treatment with the shear effects of HF acid. As expected, the optimal TCN-2 heterostructure shows excellent photocatalytic H2 evolution efficiency (1.78 mmol h−1 g−1) under visible-light irradiation. Except for the formed built-in electric field, the significantly enhanced photocatalytic activity of TCN-2 could be ascribed to the enhanced crystallinity of TiO2{001} nanosheets and the formed g-C3N4 nanocrystals with large surface area, which could extend the visible light absorption, and expedite the transfer of photo-generated charge carriers further. Our work could provide guidance on designing TCN heterostructures with the desired structure for highly-efficient photocatalytic water splitting.read more
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References
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Fabrication of TiO2/high‐crystalline g‐C3N4 composite with enhanced visible‐light photocatalytic performance for tetracycline degradation
TL;DR: In this article, a novel TiO₂/high-crystalline g−C₃N₄ (HCCN) heterojunction photocatalyst was synthesized successfully via a simply hydrothermal method, which was composed of TiO nanoparticles distributed on the surface of the HCCN nanosheets.
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g-C3N4 nanosheets with tunable affinity and sieving effect endowing polymeric membranes with enhanced CO2 capture property
TL;DR: In this article, graphitic carbon nitride (g-C3N4) nanosheets with variable adsorption properties and nanostructures were synthesized and incorporated into polyether block amide (Pebax) membrane for CO2 separation.
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TL;DR: In this article, a millimetre-sized chitosan-CdS xerogel bead photocatalyst was designed and synthesized to expound the mechanisms of photocorrosion resistant and enhanced photocatalytic hydrogen production.
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Molecular engineering of supramolecular precursor to modulate g-C3N4 for boosting photocatalytic hydrogen evolution
TL;DR: In this paper, a novel strategy was explored to enhance the photocatalytic activity of graphitic carbon nitride (g-C3N4, GCN) by modulating its molecular structure, which involved modifying supramolecular precursor by molecular engineering, followed by pyrolysis.
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Fumaric Acid Assistant Band Structure Tunable Nitrogen Defective g-C3N4 Fabrication for Enhanced Photocatalytic Hydrogen Evolution
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