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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2025-01-01
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| Series: | Molecules |
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| author | Zixu Yang Yang Sun Weizhi Wang Xiaohan Yuan Pengfei Tian Jing Xu |
| author_facet | Zixu Yang Yang Sun Weizhi Wang Xiaohan Yuan Pengfei Tian Jing Xu |
| author_sort | Zixu Yang |
| collection | DOAJ |
| description | 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. |
| format | Article |
| id | doaj-art-1a55bf892a9c443bab75bacc635b561a |
| institution | Kabale University |
| issn | 1420-3049 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
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| series | Molecules |
| spelling | doaj-art-1a55bf892a9c443bab75bacc635b561a2025-01-24T13:43:15ZengMDPI AGMolecules1420-30492025-01-0130224710.3390/molecules30020247Dual-Mechanism Study of Metal-Free g-C<sub>3</sub>N<sub>4</sub> Catalysts for Advanced Oxidation Under Non-Photocatalytic ConditionsZixu Yang0Yang Sun1Weizhi Wang2Xiaohan Yuan3Pengfei Tian4Jing Xu5State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, ChinaState Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, ChinaState Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, ChinaState Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, ChinaKey Laboratory of Pressure Systems and Safety (Ministry of Education), School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai 200237, ChinaState Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, ChinaMetal-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.https://www.mdpi.com/1420-3049/30/2/247metal-freelight-independentnonradical degradationadvanced oxidation processesg-C<sub>3</sub>N<sub>4</sub> |
| spellingShingle | Zixu Yang Yang Sun Weizhi Wang Xiaohan Yuan Pengfei Tian Jing Xu Dual-Mechanism Study of Metal-Free g-C<sub>3</sub>N<sub>4</sub> Catalysts for Advanced Oxidation Under Non-Photocatalytic Conditions Molecules metal-free light-independent nonradical degradation advanced oxidation processes g-C<sub>3</sub>N<sub>4</sub> |
| title | Dual-Mechanism Study of Metal-Free g-C<sub>3</sub>N<sub>4</sub> Catalysts for Advanced Oxidation Under Non-Photocatalytic Conditions |
| title_full | Dual-Mechanism Study of Metal-Free g-C<sub>3</sub>N<sub>4</sub> Catalysts for Advanced Oxidation Under Non-Photocatalytic Conditions |
| title_fullStr | Dual-Mechanism Study of Metal-Free g-C<sub>3</sub>N<sub>4</sub> Catalysts for Advanced Oxidation Under Non-Photocatalytic Conditions |
| title_full_unstemmed | Dual-Mechanism Study of Metal-Free g-C<sub>3</sub>N<sub>4</sub> Catalysts for Advanced Oxidation Under Non-Photocatalytic Conditions |
| title_short | Dual-Mechanism Study of Metal-Free g-C<sub>3</sub>N<sub>4</sub> Catalysts for Advanced Oxidation Under Non-Photocatalytic Conditions |
| title_sort | dual mechanism study of metal free g c sub 3 sub n sub 4 sub catalysts for advanced oxidation under non photocatalytic conditions |
| topic | metal-free light-independent nonradical degradation advanced oxidation processes g-C<sub>3</sub>N<sub>4</sub> |
| url | https://www.mdpi.com/1420-3049/30/2/247 |
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