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首页> 外文期刊>Advanced Functional Materials >An Efficient Emulsion-Induced Interface Assembly Approach for Rational Synthesis of Mesoporous Carbon Spheres with Versatile Architectures
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An Efficient Emulsion-Induced Interface Assembly Approach for Rational Synthesis of Mesoporous Carbon Spheres with Versatile Architectures

机译：具有多功能架构的高效乳液诱导的界面组装方法，用于合理合成中孔碳球的合成

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摘要

Mesoporous carbon matrix with open pore structure, short diffusion length, and large pore size can favor the in-pore immobilization of active species and facilitate mass diffusion during catalytic reactions. However, a great difficulty still remains on controllable synthesis of uniform mesoporous carbon spheres with these structural characteristics. Herein, using amphiphilic Pluronic F127 as the surfactant, 1,3,5-trimethyl benzene (TMB) as the pore swelling and interface-adjusting agent, and dopamine as the carbon source, a robust emulsion-induced interface assembly approach for rational synthesis of mesoporous carbon spheres is demonstrated. The interface assembly process, including dopamine polymerization and fusion of TMB/F127/dopamine emulsions, can be regulated by tuning the dosage of dopamine and ammonia water, resulting in mesoporous carbon spheres with tunable pore sizes and versatile architectures, such as vesicles, walnut shapes, spheres with dendritic-like 3D radially aligned mesochannels (RA-MC), and isolated spherical mesopores. Moreover, the derived RA-MC is used as a promising matrix to immobilize ultra-small Au nanoparticles (approximate to 3 nm). The Au/RA-MC exhibits no mass diffusion limitations in reduction of 4-nitrophenol, showing high conversion efficiency and good recyclability. This work paves a new avenue for controllable synthesis of mesoporous carbon spheres with well-developed mesoporosity and architectures and their application as novel heterogeneous catalysts.
机译：具有开放孔结构的介孔碳基质，短扩散长度，孔径大的孔径可以利用活性物质的内孔固定，促进催化反应期间的质量扩散。然而，很大的困难仍然是具有这些结构特征的均匀介孔碳球的可控合成。在此，使用两亲性Pluronic F127作为表面活性剂，1,3,5-三甲基苯（TMB）作为孔膨胀和界面调节剂，以及多巴胺作为碳源，是一种稳健的乳液诱导的界面组装方法，用于合理合成表明介孔碳球。通过调节多巴胺和氨水的剂量来调节界面组装方法，包括多巴胺聚合和TMB / F127 /多巴胺乳液的融合，导致具有可调谐孔径和多功能架构的介孔碳球，例如囊泡，核桃形状，具有树突状3D的球形径向对齐的Mesochannels（RA-MC）和分离的球形uperopores。此外，衍生的RA-MC用作有希望的基质以固定超小Au纳米颗粒（近似为3nm）。 AU / RA-MC在减少4-硝基苯酚中没有大规模扩散限制，显示出高转化效率和良好的再循环性。这项工作铺设了一种新的途径，可控制介孔碳球的合成，具有良好开发的中渗透性和架构及其作为新型异构催化剂的应用。

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  • 来源
    《Advanced Functional Materials》 |2020年第36期|2002488.1-2002488.11|共11页
  • 作者

    Yang Xuanyu; Lu Penghao; Yu Lei; Pan Panpan; Elzatahry Ahmed A.; Alghamdi Abdulaziz; Luo Wei; Cheng Xiaowei; Deng Yonghui;

  • 作者单位

    Fudan Univ Dept Chem Shanghai Key Lab Mol Catalysis & Innovat Mat Shanghai 200433 Peoples R China;

    Fudan Univ Dept Chem Shanghai Key Lab Mol Catalysis & Innovat Mat Shanghai 200433 Peoples R China|Univ Shanghai Sci & Technol Sch Mat Sci & Engn Shanghai 200093 Peoples R China;

    Fudan Univ Dept Chem Shanghai Key Lab Mol Catalysis & Innovat Mat Shanghai 200433 Peoples R China;

    Fudan Univ Dept Chem Shanghai Key Lab Mol Catalysis & Innovat Mat Shanghai 200433 Peoples R China;

    Qatar Univ Mat Sci & Technol Program Coll Arts & Sci POB 2713 Doha Qatar;

    King Saud Univ Coll Sci Dept Chem POB 2455 Riyadh 11451 Saudi Arabia;

    Donghua Univ State Key Lab Modificat Chem Fibers & Polymer Mat Coll Mat Sci & Engn Inst Funct Mat Shanghai 201620 Peoples R China;

    Fudan Univ Dept Chem Shanghai Key Lab Mol Catalysis & Innovat Mat Shanghai 200433 Peoples R China;

    Fudan Univ Dept Chem Shanghai Key Lab Mol Catalysis & Innovat Mat Shanghai 200433 Peoples R China|Chinese Acad Sci State Key Lab Transducer Technol Shanghai Inst Microsyst & Informat Technol Shanghai 200050 Peoples R China;

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  • 正文语种 eng
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  • 关键词

    1; 3; 5-trimethyl benzene; dopamine; emulsion-induced interface assembly; mesoporous carbon spheres; Pluronic F127;

    机译：1;3;5-三甲基苯;多巴胺;乳液诱导的界面组件;中孔碳球;Pluronic F127;

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