Synthesis of 9,9′-Bifluorenylidene-Based Porous Aromatic Frameworks (BF-PAFs) for Photocatalytic Production of Hydrogen Peroxide

Synthesis Pub Date : 2024-08-28 DOI:10.1055/a-2378-3919

He Wang, Xinmeng Xu, Linzhu Cao, Xin Tao

{"title":"Synthesis of 9,9′-Bifluorenylidene-Based Porous Aromatic Frameworks (BF-PAFs) for Photocatalytic Production of Hydrogen Peroxide","authors":"He Wang, Xinmeng Xu, Linzhu Cao, Xin Tao","doi":"10.1055/a-2378-3919","DOIUrl":null,"url":null,"abstract":"Photocatalytic technology is considered to be a sustainable strategy to convert H2O and O2 into H2O2. However, constructing photocatalytically active and stable organic photocatalyst remain a challenge. In this study, a new class of porous aromatic framework photocatalysts (BF-PAFs) were designed and synthesized, in which 9,9′-bifluorenylidene (99′-BF) and different alkynes are alternately connected. The BF-PAFs were constructed and served as photocatalysts for H2O2 synthesis. Experimental results show that the introduction of different alkynes can effectively regulate the optical band gap and energy band structure, which may further determine their photocatalytic performance. Upon visible light irradiation, PAF-370 exhibits high efficiency for photosynthesis of H2O2 with a production rate of 730 μmol g–1 h–1 in the presence of sacrificial reagent from water and oxygen via oxygen reduction reaction (ORR) pathway. Furthermore, up to 61 μmol H2O2 could be generated from this photocatalytic system after 14 hours. ","PeriodicalId":501298,"journal":{"name":"Synthesis","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2024-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Synthesis","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1055/a-2378-3919","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 0

Abstract

Photocatalytic technology is considered to be a sustainable strategy to convert H₂O and O₂ into H₂O₂. However, constructing photocatalytically active and stable organic photocatalyst remain a challenge. In this study, a new class of porous aromatic framework photocatalysts (BF-PAFs) were designed and synthesized, in which 9,9′-bifluorenylidene (99′-BF) and different alkynes are alternately connected. The BF-PAFs were constructed and served as photocatalysts for H₂O₂ synthesis. Experimental results show that the introduction of different alkynes can effectively regulate the optical band gap and energy band structure, which may further determine their photocatalytic performance. Upon visible light irradiation, PAF-370 exhibits high efficiency for photosynthesis of H₂O₂ with a production rate of 730 μmol g^–1 h^–1 in the presence of sacrificial reagent from water and oxygen via oxygen reduction reaction (ORR) pathway. Furthermore, up to 61 μmol H₂O₂ could be generated from this photocatalytic system after 14 hours.

Abstract Image

查看原文本刊更多论文

用于光催化生产过氧化氢的 9,9′-双芴基多孔芳香族框架 (BF-PAFs) 的合成

光催化技术被认为是将 H2O 和 O2 转化为 H2O2 的可持续战略。然而，构建具有光催化活性且稳定的有机光催化剂仍是一项挑战。本研究设计并合成了一类新型多孔芳香框架光催化剂（BF-PAFs），其中 9,9′-二芴（99′-BF）与不同的炔烃交替连接。制备出的 BF-PAFs 可用作合成 H2O2 的光催化剂。实验结果表明，引入不同的炔烃可有效调节光带隙和能带结构，从而进一步决定其光催化性能。在可见光照射下，PAF-370 通过氧还原反应（ORR）途径，在水和氧的牺牲试剂存在下，表现出高效率的 H2O2 光合作用，产生率达 730 μmol g-1 h-1。此外，该光催化系统可在 14 小时后产生多达 61 μmol H2O2。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Synthesis

自引率

0.00%

发文量