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首页> 外文期刊>Advanced Functional Materials >Controllably Engineering Mesoporous Surface and Dimensionality of SnO_2 toward High-Performance CO_2 Electroreduction
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Controllably Engineering Mesoporous Surface and Dimensionality of SnO_2 toward High-Performance CO_2 Electroreduction

机译：可控制的工程介孔表面和SnO_2的维度朝向高性能CO_2电导

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摘要

Currently, the precise control of the architecture and surface of functional materials for high-performance still remains a great challenge. Here, a feasible approach is presented to synchronously manipulate mesoporous surface and dimensionality of SnO(2)catalysts into hierarchically mesoporous nanosheets and nanospheres within one simple reaction system. By adjustment of the hydrophobic chain length of different fluorinated surfactants, 0D SnO(2)nanospheres with average size of 165 nm, and 2D SnO(2)ulthrathin nanosheets with thickness of 22.5 nm with the distinct dimensionalities are separately obtained (one stone, two birds), both of which are well decorated with ordered mesopore arrays on their surfaces (pore size of 16 nm). The following calcination gave rise to the formation of hierarchically mesopores (5 and 16 nm, respectively) with high crystallization and improved surface area (96.8 m(2)g(-1)). The resultant mesoporous SnO(2)nanosheets as catalyst for CO(2)electroreduction reaction (CO2RR) exhibit excellent selectivity, with a high Faraday efficiency (FE) of HCOOH reaching up to 90.0% at -1.3 V andC(1)FE of 97.4% at -1.2 V versus reversible hydrogen electrode, as well as long-term stability, which is among the best performance compared to reported SnO(2)materials, thanks to the collective contributions of the unique architecture and mesoporous structure.
机译：目前，对高性能的功能材料的结构和表面的精确控制仍然是一个巨大的挑战。这里，提出了一种可行的方法，以在一个简单的反应体系内同步地操纵SnO（2）催化剂的中孔（2）催化剂的介孔表面和维度。通过调节不同氟化表面活性剂的疏水链长度，0d SnO（2）纳米具有平均尺寸为165nm的纳米，分别地获得厚度为22.5nm的2d SnO（2）ulththathin纳米片（一块石头，两个鸟类），两者都在其表面上有订购的中孔阵列（孔径为16nm）。以下煅烧产生具有高结晶和改进的表面积（96.8m（2 )g（-1））的高结晶和改进的分层中孔（5和16nm）的形成。作为CO（2）电氧化合物反应（CO2RR）催化剂的所得介孔SnO（2）纳米片表现出优异的选择性，HCOOH的高法拉第效率（Fe）达到-1.3V和C（1）Fe的高达90.0％的97.4凭借独特的架构和中孔结构的集体贡献，％在-1.2V与可逆氢电极以及长期稳定性，这是与报告的SnO（2）材料相比的最佳性能。

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  • 来源
    《Advanced Functional Materials》 |2020年第39期|2002092.1-2002092.9|共9页
  • 作者

    Wei Facai; Wang Tingting; Jiang Xiaolin; Ai Yan; Cui Anyang; Cui Jing; Fu Jianwei; Cheng Jiangong; Lei Lecheng; Hou Yang; Liu Shaohua;

  • 作者单位

    East China Normal Univ Engn Res Ctr Nanophoton & Adv Instrument Sch Phys & Elect Sci State Key Lab Precis Spect Minist Educ Shanghai 200241 Peoples R China;

    Zhejiang Univ Key Lab Biomass Chem Engn Minist Educ Coll Chem & Biol Engn Hangzhou 310027 Peoples R China;

    East China Normal Univ Engn Res Ctr Nanophoton & Adv Instrument Sch Phys & Elect Sci State Key Lab Precis Spect Minist Educ Shanghai 200241 Peoples R China;

    East China Normal Univ Engn Res Ctr Nanophoton & Adv Instrument Sch Phys & Elect Sci State Key Lab Precis Spect Minist Educ Shanghai 200241 Peoples R China;

    East China Normal Univ Engn Res Ctr Nanophoton & Adv Instrument Sch Phys & Elect Sci State Key Lab Precis Spect Minist Educ Shanghai 200241 Peoples R China;

    East China Normal Univ Engn Res Ctr Nanophoton & Adv Instrument Sch Phys & Elect Sci State Key Lab Precis Spect Minist Educ Shanghai 200241 Peoples R China;

    Zhengzhou Univ Sch Mat Sci & Engn Zhengzhou 450001 Henan Peoples R China;

    Chinese Acad Sci State Key Lab Transducer Technol Shanghai Inst Microsyst & Informat Technol Shanghai 200050 Peoples R China;

    Zhejiang Univ Key Lab Biomass Chem Engn Minist Educ Coll Chem & Biol Engn Hangzhou 310027 Peoples R China;

    Zhejiang Univ Key Lab Biomass Chem Engn Minist Educ Coll Chem & Biol Engn Hangzhou 310027 Peoples R China|Zhejiang Univ Ningbo Res Inst Ningbo 315100 Peoples R China;

    East China Normal Univ Engn Res Ctr Nanophoton & Adv Instrument Sch Phys & Elect Sci State Key Lab Precis Spect Minist Educ Shanghai 200241 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

    2D nanosheets; CO(2)reduction reaction; mesoporous materials; self-assembly; SnO2;

    机译：2D纳米片;CO（2）还原反应;中孔材料;自组装;SNO2;

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