Jianwen Zhou, Tianshang Shan, Fengshan Zhang, Bruno Boury, Liulian Huang, Yingkui Yang, Guangfu Liao, He Xiao, Lihui Chen
{"title":"带有纳米纤维碳的新型双通道氮化碳同质结可显著提高光催化过氧化氢的生成量","authors":"Jianwen Zhou, Tianshang Shan, Fengshan Zhang, Bruno Boury, Liulian Huang, Yingkui Yang, Guangfu Liao, He Xiao, Lihui Chen","doi":"10.1007/s42765-023-00354-9","DOIUrl":null,"url":null,"abstract":"<div><p>Photocatalytic H<sub>2</sub>O<sub>2</sub> synthesis (PHS) via graphite carbon nitride (g-C<sub>3</sub>N<sub>4</sub>) is a low-carbon and environmentally friendly approach, which has garnered tremendous attention. However, as for the pristine g-C<sub>3</sub>N<sub>4</sub>, the PHS is severely constrained by the slow transfer and rapid recombination of photogenerated carriers. Herein, we introduced cellulose-derived carbon nanofibers (CF) into the homojunction of g-C<sub>3</sub>N<sub>4</sub> nanotubes (MCN) and g-C<sub>3</sub>N<sub>4</sub> nanosheets (SCN). A series of photocatalytic results demonstrate that the embedding of cellulose-derived carbon for MCN/SCN/CF composite catalyst significantly improved the photocatalytic H<sub>2</sub>O<sub>2</sub> generation (136.9 μmol·L<sup>−1</sup>·h<sup>−1</sup>) with 5-holds higher than that of individual MCN (27.5 μmol·L<sup>−1</sup>·h<sup>−1</sup>) without any sacrificial agent. This enhancement can be attributed to the combined effects of the two-step one-electron oxygen reduction reaction (ORR) on conduction band (CB) side and the water oxidation reaction (WOR) on valence band (VB) side. A comprehensive characterization of the mechanism indicates that CF enhances the absorption of light, promotes the separation and migration of photogenerated carriers, and regulates the position of the valence and conduction bands with an effective dual-channel ORR pathway for photo-synthesis of H<sub>2</sub>O<sub>2</sub>. This work provides valuable insights into utilizing biomass-based materials for significantly boosting photocatalytic H<sub>2</sub>O<sub>2</sub> production.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":459,"journal":{"name":"Advanced Fiber Materials","volume":"6 2","pages":"387 - 400"},"PeriodicalIF":17.2000,"publicationDate":"2024-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A Novel Dual-Channel Carbon Nitride Homojunction with Nanofibrous Carbon for Significantly Boosting Photocatalytic Hydrogen Peroxide Production\",\"authors\":\"Jianwen Zhou, Tianshang Shan, Fengshan Zhang, Bruno Boury, Liulian Huang, Yingkui Yang, Guangfu Liao, He Xiao, Lihui Chen\",\"doi\":\"10.1007/s42765-023-00354-9\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Photocatalytic H<sub>2</sub>O<sub>2</sub> synthesis (PHS) via graphite carbon nitride (g-C<sub>3</sub>N<sub>4</sub>) is a low-carbon and environmentally friendly approach, which has garnered tremendous attention. However, as for the pristine g-C<sub>3</sub>N<sub>4</sub>, the PHS is severely constrained by the slow transfer and rapid recombination of photogenerated carriers. Herein, we introduced cellulose-derived carbon nanofibers (CF) into the homojunction of g-C<sub>3</sub>N<sub>4</sub> nanotubes (MCN) and g-C<sub>3</sub>N<sub>4</sub> nanosheets (SCN). A series of photocatalytic results demonstrate that the embedding of cellulose-derived carbon for MCN/SCN/CF composite catalyst significantly improved the photocatalytic H<sub>2</sub>O<sub>2</sub> generation (136.9 μmol·L<sup>−1</sup>·h<sup>−1</sup>) with 5-holds higher than that of individual MCN (27.5 μmol·L<sup>−1</sup>·h<sup>−1</sup>) without any sacrificial agent. This enhancement can be attributed to the combined effects of the two-step one-electron oxygen reduction reaction (ORR) on conduction band (CB) side and the water oxidation reaction (WOR) on valence band (VB) side. A comprehensive characterization of the mechanism indicates that CF enhances the absorption of light, promotes the separation and migration of photogenerated carriers, and regulates the position of the valence and conduction bands with an effective dual-channel ORR pathway for photo-synthesis of H<sub>2</sub>O<sub>2</sub>. This work provides valuable insights into utilizing biomass-based materials for significantly boosting photocatalytic H<sub>2</sub>O<sub>2</sub> production.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>\",\"PeriodicalId\":459,\"journal\":{\"name\":\"Advanced Fiber Materials\",\"volume\":\"6 2\",\"pages\":\"387 - 400\"},\"PeriodicalIF\":17.2000,\"publicationDate\":\"2024-01-09\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Advanced Fiber Materials\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s42765-023-00354-9\",\"RegionNum\":1,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advanced Fiber Materials","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s42765-023-00354-9","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
A Novel Dual-Channel Carbon Nitride Homojunction with Nanofibrous Carbon for Significantly Boosting Photocatalytic Hydrogen Peroxide Production
Photocatalytic H2O2 synthesis (PHS) via graphite carbon nitride (g-C3N4) is a low-carbon and environmentally friendly approach, which has garnered tremendous attention. However, as for the pristine g-C3N4, the PHS is severely constrained by the slow transfer and rapid recombination of photogenerated carriers. Herein, we introduced cellulose-derived carbon nanofibers (CF) into the homojunction of g-C3N4 nanotubes (MCN) and g-C3N4 nanosheets (SCN). A series of photocatalytic results demonstrate that the embedding of cellulose-derived carbon for MCN/SCN/CF composite catalyst significantly improved the photocatalytic H2O2 generation (136.9 μmol·L−1·h−1) with 5-holds higher than that of individual MCN (27.5 μmol·L−1·h−1) without any sacrificial agent. This enhancement can be attributed to the combined effects of the two-step one-electron oxygen reduction reaction (ORR) on conduction band (CB) side and the water oxidation reaction (WOR) on valence band (VB) side. A comprehensive characterization of the mechanism indicates that CF enhances the absorption of light, promotes the separation and migration of photogenerated carriers, and regulates the position of the valence and conduction bands with an effective dual-channel ORR pathway for photo-synthesis of H2O2. This work provides valuable insights into utilizing biomass-based materials for significantly boosting photocatalytic H2O2 production.
期刊介绍：
Advanced Fiber Materials is a hybrid, peer-reviewed, international and interdisciplinary research journal which aims to publish the most important papers in fibers and fiber-related devices as well as their applications.Indexed by SCIE, EI, Scopus et al.
Publishing on fiber or fiber-related materials, technology, engineering and application.
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