Porous graphitic carbon nitride with high concentration of oxygen promotes photocatalytic H<sub>2</sub> evolution

Herein, we report the rational synthesis of porous g-C3N4 co-modified with oxygen (O) and fluorine (F) for the first time. Incorporating colloidal SiO2 during thermal polymerization introduces lattice oxygen, forming C–O bonds, while post-treatment with NH4·HF2 establishes C–F bonds. The dual incorporation of O and F elements extends visible light absorption and effectively promotes the separation and transport of photoexcited charge carriers. Consequently, the co-modified g-C3N4 (O,F-g-C3N4) achieves a 13.2-fold increase in H2 evolution rate compared to pristine g-C3N4. This synthesized O,F-g-C3N4 is then dispersed in waterborne polyurethane (WPU) to create an anti-corrosive coating for Q235 carbon steel substrates. Water resistance, mechanical property, and electrochemical characterization analyses reveal that the O,F-g-C3N4/WPU composite coating exhibits remarkable corrosion resistance with a high protection efficiency of 90.23%. This work offers a straightforward approach for developing highly efficient g-C3N4-based photocatalysts and corrosion-resistant coatings.

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Porous graphitic carbon nitride with high concentration of oxygen promotes photocatalytic H₂ evolution

Abstract: Porous structure design and the content regulation of heteroelements have been proved to be effective strategies to boost photocatalytic H2 generation activity of graphitic carbon nitride (g-C3N4) based photocatalyst.

Cited by 2 publications

References 49 publications

Size modulation of plasmonic In2O3 nanocube optimized photocatalytic H2 evolution over stack g–C3N4–In2O3 heterojunction

Size modulation of plasmonic In2O3 nanocube optimized photocatalytic H2 evolution over stack g–C3N4–In2O3 heterojunction

Synthesis of O,F Co-Modified g-C3N4 for Photocatalytic H2 Evolution Activity Improvement and Corrosion Protection

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Porous graphitic carbon nitride with high concentration of oxygen promotes photocatalytic H2 evolution

Abstract: Porous structure design and the content regulation of heteroelements have been proved to be effective strategies to boost photocatalytic H2 generation activity of graphitic carbon nitride (g-C3N4) based photocatalyst.

Cited by 2 publications

References 49 publications

Size modulation of plasmonic In2O3 nanocube optimized photocatalytic H2 evolution over stack g–C3N4–In2O3 heterojunction

Size modulation of plasmonic In2O3 nanocube optimized photocatalytic H2 evolution over stack g–C3N4–In2O3 heterojunction

Synthesis of O,F Co-Modified g-C3N4 for Photocatalytic H2 Evolution Activity Improvement and Corrosion Protection

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Porous graphitic carbon nitride with high concentration of oxygen promotes photocatalytic H₂ evolution