Dual-Mechanism Study of Metal-Free g-C<sub>3</sub>N<sub>4</sub> Catalysts for Advanced Oxidation Under Non-Photocatalytic Conditions
Metal-free materials have been proved to be promising replacements of traditional metal-based catalysts for advanced oxidation reactions. Carbon nitride was found to be able to activate H<sub>2</sub>O<sub>2</sub> and generate hydroxyl radicals (•OH). Nevertheless, the perform...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-01-01
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| Series: | Molecules |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1420-3049/30/2/247 |
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| Summary: | Metal-free materials have been proved to be promising replacements of traditional metal-based catalysts for advanced oxidation reactions. Carbon nitride was found to be able to activate H<sub>2</sub>O<sub>2</sub> and generate hydroxyl radicals (•OH). Nevertheless, the performance of carbon nitride is highly dependent on an external light source. In this work, we report a light-independent, metal-free catalyst based on g-C<sub>3</sub>N<sub>4</sub> prepared using a facile calcination method. It is revealed that two reaction pathways, a radical (•OH) one and a nonradical (H<sub>2</sub>O<sub>2</sub>) one, coexist in organics oxidation on g-C<sub>3</sub>N<sub>4</sub>. The dominant reaction pathway is dependent on the condensation temperature of UCN. In addition, this g-C<sub>3</sub>N<sub>4</sub> exhibited excellent stability after being recycled and reused for five cycles. The findings in this work can be used for the design of efficient and robust metal-free catalysts with both superior catalytic performance and high stability for various heterogeneous catalytic processes. |
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| ISSN: | 1420-3049 |