{"title":"揭示 Bi2Fe4O9/缺碳 g-C3N4 中铁电极化和 Z 型异质结在提高亚甲基蓝降解效率方面的协同作用","authors":"Xing Liang, Guojian Jiang, Chugeng Huang, Zizhou Xiong, Xiongjun Wu","doi":"10.1002/aoc.7683","DOIUrl":null,"url":null,"abstract":"<div>\n \n <p>Enhancing the efficiency of charge carrier separation is crucial for improving the performance of photocatalysts, thereby offering more effective solutions to energy and environmental pollution challenges. In this study, a carbon-deficient ultra-thin porous g-C<sub>3</sub>N<sub>4</sub> (Vc-UPCN) was synthesized and subsequently was integrated with Bi<sub>2</sub>Fe<sub>4</sub>O<sub>9</sub> (BFO) using a sonochemical self-assembly technique, a Bi<sub>2</sub>Fe<sub>4</sub>O<sub>9</sub>/Vc-UPCN (<span>BC</span>) photocatalyst featuring a Z-scheme heterojunction. The <span>BC</span> catalyst was subjected to corona poling treatment to obtain <span>BC</span>p, which possesses an intrinsic electric field. Compared with pure BFO and Vc-UPCN, the BC heterojunction exhibited higher photo-generated electron–hole separation efficiency and photodegradation ability. Upon introduction of corona polarization, the photocatalytic performance of <span>BC</span> was further enhanced. Specifically, <span>BC</span>p-15 (BFO/BC mass fraction = 15) achieved complete degradation of methylene blue (MB) within 30 min. BCp-15 demonstrated that its degradation efficiency for MB was 1.28 times higher than that of BC-15, 1.85 times higher than that of Vc-UPCN, and impressive 7.69 times higher than that of pure BFO. The coupling effect of the heterojunction and ferroelectric polarization significantly improved the separation efficiency of photo-generated carriers in BCp. This study is expected to provide a reference for the synergistic application of heterojunction and ferroelectric polarization in traditional semiconductor photocatalysis.</p>\n </div>","PeriodicalId":8344,"journal":{"name":"Applied Organometallic Chemistry","volume":"38 11","pages":""},"PeriodicalIF":3.7000,"publicationDate":"2024-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Unveiling the Synergistic Role of Ferroelectric Polarization and Z-Scheme Heterojunction in Bi2Fe4O9/Carbon-Deficient g-C3N4 for Enhanced Methylene Blue Degradation Efficiency\",\"authors\":\"Xing Liang, Guojian Jiang, Chugeng Huang, Zizhou Xiong, Xiongjun Wu\",\"doi\":\"10.1002/aoc.7683\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div>\\n \\n <p>Enhancing the efficiency of charge carrier separation is crucial for improving the performance of photocatalysts, thereby offering more effective solutions to energy and environmental pollution challenges. In this study, a carbon-deficient ultra-thin porous g-C<sub>3</sub>N<sub>4</sub> (Vc-UPCN) was synthesized and subsequently was integrated with Bi<sub>2</sub>Fe<sub>4</sub>O<sub>9</sub> (BFO) using a sonochemical self-assembly technique, a Bi<sub>2</sub>Fe<sub>4</sub>O<sub>9</sub>/Vc-UPCN (<span>BC</span>) photocatalyst featuring a Z-scheme heterojunction. The <span>BC</span> catalyst was subjected to corona poling treatment to obtain <span>BC</span>p, which possesses an intrinsic electric field. Compared with pure BFO and Vc-UPCN, the BC heterojunction exhibited higher photo-generated electron–hole separation efficiency and photodegradation ability. Upon introduction of corona polarization, the photocatalytic performance of <span>BC</span> was further enhanced. Specifically, <span>BC</span>p-15 (BFO/BC mass fraction = 15) achieved complete degradation of methylene blue (MB) within 30 min. BCp-15 demonstrated that its degradation efficiency for MB was 1.28 times higher than that of BC-15, 1.85 times higher than that of Vc-UPCN, and impressive 7.69 times higher than that of pure BFO. The coupling effect of the heterojunction and ferroelectric polarization significantly improved the separation efficiency of photo-generated carriers in BCp. This study is expected to provide a reference for the synergistic application of heterojunction and ferroelectric polarization in traditional semiconductor photocatalysis.</p>\\n </div>\",\"PeriodicalId\":8344,\"journal\":{\"name\":\"Applied Organometallic Chemistry\",\"volume\":\"38 11\",\"pages\":\"\"},\"PeriodicalIF\":3.7000,\"publicationDate\":\"2024-08-31\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Applied Organometallic Chemistry\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1002/aoc.7683\",\"RegionNum\":2,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, APPLIED\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Applied Organometallic Chemistry","FirstCategoryId":"92","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/aoc.7683","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, APPLIED","Score":null,"Total":0}
Unveiling the Synergistic Role of Ferroelectric Polarization and Z-Scheme Heterojunction in Bi2Fe4O9/Carbon-Deficient g-C3N4 for Enhanced Methylene Blue Degradation Efficiency
Enhancing the efficiency of charge carrier separation is crucial for improving the performance of photocatalysts, thereby offering more effective solutions to energy and environmental pollution challenges. In this study, a carbon-deficient ultra-thin porous g-C3N4 (Vc-UPCN) was synthesized and subsequently was integrated with Bi2Fe4O9 (BFO) using a sonochemical self-assembly technique, a Bi2Fe4O9/Vc-UPCN (BC) photocatalyst featuring a Z-scheme heterojunction. The BC catalyst was subjected to corona poling treatment to obtain BCp, which possesses an intrinsic electric field. Compared with pure BFO and Vc-UPCN, the BC heterojunction exhibited higher photo-generated electron–hole separation efficiency and photodegradation ability. Upon introduction of corona polarization, the photocatalytic performance of BC was further enhanced. Specifically, BCp-15 (BFO/BC mass fraction = 15) achieved complete degradation of methylene blue (MB) within 30 min. BCp-15 demonstrated that its degradation efficiency for MB was 1.28 times higher than that of BC-15, 1.85 times higher than that of Vc-UPCN, and impressive 7.69 times higher than that of pure BFO. The coupling effect of the heterojunction and ferroelectric polarization significantly improved the separation efficiency of photo-generated carriers in BCp. This study is expected to provide a reference for the synergistic application of heterojunction and ferroelectric polarization in traditional semiconductor photocatalysis.
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All new compounds should be satisfactorily identified and proof of their structure given according to generally accepted standards. Structural reports, such as papers exclusively dealing with synthesis and characterization, analytical techniques, or X-ray diffraction studies of metal-organic or organometallic compounds will not be considered. The editors reserve the right to refuse without peer review any manuscript that does not comply with the aims and scope of the journal. Applied Organometallic Chemistry publishes Full Papers, Reviews, Mini Reviews and Communications of scientific research in all areas of organometallic and metal-organic chemistry involving main group metals, transition metals, lanthanides and actinides. All contributions should contain an explicit application of novel compounds, for instance in materials science, nano science, catalysis, chemical vapour deposition, metal-mediated organic synthesis, polymers, bio-organometallics, metallo-therapy, metallo-diagnostics and medicine. Reviews of books covering aspects of the fields of focus are also published.
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