Synthesis of O,F Co-Modified g-C<sub>3</sub>N<sub>4</sub> for Photocatalytic H<sub>2</sub> Evolution Activity Improvement and Corrosion Protection
Herein, we report the rational synthesis of porous g-C<sub>3</sub>N<sub>4</sub> co-modified with oxygen (O) and fluorine (F) for the first time. Incorporating colloidal SiO<sub>2</sub> during thermal polymerization introduces lattice oxygen, forming C–O bonds, whi...
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2024-12-01
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| author | Shiyu Zhou Pei Li Chunbo Zhang Yang Wang Jingting Hu Ruokun Jia |
| author_facet | Shiyu Zhou Pei Li Chunbo Zhang Yang Wang Jingting Hu Ruokun Jia |
| author_sort | Shiyu Zhou |
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| description | Herein, we report the rational synthesis of porous g-C<sub>3</sub>N<sub>4</sub> co-modified with oxygen (O) and fluorine (F) for the first time. Incorporating colloidal SiO<sub>2</sub> during thermal polymerization introduces lattice oxygen, forming C–O bonds, while post-treatment with NH<sub>4</sub>·HF<sub>2</sub> 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-C<sub>3</sub>N<sub>4</sub> (O,F-g-C<sub>3</sub>N<sub>4</sub>) achieves a 13.2-fold increase in H<sub>2</sub> evolution rate compared to pristine g-C<sub>3</sub>N<sub>4</sub>. This synthesized O,F-g-C<sub>3</sub>N<sub>4</sub> 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-C<sub>3</sub>N<sub>4</sub>/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-C<sub>3</sub>N<sub>4</sub>-based photocatalysts and corrosion-resistant coatings. |
| format | Article |
| id | doaj-art-9935d5b96deb43bc99cb93dc7c78c7c5 |
| institution | Kabale University |
| issn | 2073-4352 |
| language | English |
| publishDate | 2024-12-01 |
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| series | Crystals |
| spelling | doaj-art-9935d5b96deb43bc99cb93dc7c78c7c52024-12-27T14:19:46ZengMDPI AGCrystals2073-43522024-12-011412106310.3390/cryst14121063Synthesis of O,F Co-Modified g-C<sub>3</sub>N<sub>4</sub> for Photocatalytic H<sub>2</sub> Evolution Activity Improvement and Corrosion ProtectionShiyu Zhou0Pei Li1Chunbo Zhang2Yang Wang3Jingting Hu4Ruokun Jia5Jilin Province Electric Power Research Institute, Changchun 130021, ChinaJilin Province Electric Power Research Institute, Changchun 130021, ChinaJilin Province Electric Power Research Institute, Changchun 130021, ChinaJilin Province Electric Power Research Institute, Changchun 130021, ChinaJilin Province Electric Power Research Institute, Changchun 130021, ChinaCollege of Chemical Engineering, Northeast Electric Power University, Jilin City 132012, ChinaHerein, we report the rational synthesis of porous g-C<sub>3</sub>N<sub>4</sub> co-modified with oxygen (O) and fluorine (F) for the first time. Incorporating colloidal SiO<sub>2</sub> during thermal polymerization introduces lattice oxygen, forming C–O bonds, while post-treatment with NH<sub>4</sub>·HF<sub>2</sub> 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-C<sub>3</sub>N<sub>4</sub> (O,F-g-C<sub>3</sub>N<sub>4</sub>) achieves a 13.2-fold increase in H<sub>2</sub> evolution rate compared to pristine g-C<sub>3</sub>N<sub>4</sub>. This synthesized O,F-g-C<sub>3</sub>N<sub>4</sub> 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-C<sub>3</sub>N<sub>4</sub>/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-C<sub>3</sub>N<sub>4</sub>-based photocatalysts and corrosion-resistant coatings.https://www.mdpi.com/2073-4352/14/12/1063g-C<sub>3</sub>N<sub>4</sub>O,F co-modificationphotocatalytic H<sub>2</sub> evolutionanti-corrosion |
| spellingShingle | Shiyu Zhou Pei Li Chunbo Zhang Yang Wang Jingting Hu Ruokun Jia Synthesis of O,F Co-Modified g-C<sub>3</sub>N<sub>4</sub> for Photocatalytic H<sub>2</sub> Evolution Activity Improvement and Corrosion Protection Crystals g-C<sub>3</sub>N<sub>4</sub> O,F co-modification photocatalytic H<sub>2</sub> evolution anti-corrosion |
| title | Synthesis of O,F Co-Modified g-C<sub>3</sub>N<sub>4</sub> for Photocatalytic H<sub>2</sub> Evolution Activity Improvement and Corrosion Protection |
| title_full | Synthesis of O,F Co-Modified g-C<sub>3</sub>N<sub>4</sub> for Photocatalytic H<sub>2</sub> Evolution Activity Improvement and Corrosion Protection |
| title_fullStr | Synthesis of O,F Co-Modified g-C<sub>3</sub>N<sub>4</sub> for Photocatalytic H<sub>2</sub> Evolution Activity Improvement and Corrosion Protection |
| title_full_unstemmed | Synthesis of O,F Co-Modified g-C<sub>3</sub>N<sub>4</sub> for Photocatalytic H<sub>2</sub> Evolution Activity Improvement and Corrosion Protection |
| title_short | Synthesis of O,F Co-Modified g-C<sub>3</sub>N<sub>4</sub> for Photocatalytic H<sub>2</sub> Evolution Activity Improvement and Corrosion Protection |
| title_sort | synthesis of o f co modified g c sub 3 sub n sub 4 sub for photocatalytic h sub 2 sub evolution activity improvement and corrosion protection |
| topic | g-C<sub>3</sub>N<sub>4</sub> O,F co-modification photocatalytic H<sub>2</sub> evolution anti-corrosion |
| url | https://www.mdpi.com/2073-4352/14/12/1063 |
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