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首页> 外文期刊>Advanced Functional Materials >One-Pot Synthesis of Freestanding Porous Palladium Nanosheets as Highly Efficient Electrocatalysts for Formic Acid Oxidation
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One-Pot Synthesis of Freestanding Porous Palladium Nanosheets as Highly Efficient Electrocatalysts for Formic Acid Oxidation

机译：一锅合成的独立式多孔钯纳米片，作为甲酸氧化的高效电催化剂

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摘要

Freestanding ultrathin 2D noble metal nanosheets have drawn enormous attention due to their potential applications in various fields. However, the synthesis of 2D noble metal nanosheets still remains a great challenge due to the lack of an intrinsic driving force for anisotropic growth of 2D structures. Here, a facile one-pot synthesis of ultrathin freestanding porous Pd nanosheets (approximate to 2.5 mu m in lateral size and 10 nm in thickness) flexibly knitted by interweaved ultrathin nanowires with the assistance of poly(diallyldimethylammonium chloride) is presented. Nanoparticles attachment and subsequent self-assembly in the synthetic process are responsible for the formation of such intriguing nanostructures. Moreover, finely controlling the pH value of the precursor solution leads to yield different Pd nanostructures with tunable dimensionalities, including 3D nanoflowers, 2D nanosheets, and 1D nanochains. Owing to the unique structural features, the obtained freestanding porous Pd nanosheets exhibit excellent electrocatalytic activity and stability towards formic acid oxidation compared to those of other dimensional counterparts and commercial Pd black.
机译：独立式超薄2D贵金属纳米片由于其在各个领域的潜在应用而备受关注。但是，由于缺乏2D结构各向异性生长的内在驱动力，因此2D贵金属纳米片的合成仍然面临巨大挑战。在这里，提出了一种方便的一锅法合成的超薄独立式多孔Pd纳米片（横向尺寸约为2.5微米，厚度为10纳米），它是由交织的超薄纳米线在聚二烯丙基二甲基氯化铵的帮助下灵活编织而成的。纳米颗粒的附着以及随后在合成过程中的自组装是造成这种引人入胜的纳米结构的原因。此外，精细控制前体溶液的pH值会导致产生具有可调尺寸的不同Pd纳米结构，包括3D纳米花，2D纳米片和1D纳米链。由于其独特的结构特征，与其他尺寸对应物和市售Pd黑相比，所获得的独立式多孔Pd纳米片具有出色的电催化活性和对甲酸氧化的稳定性。

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  • 来源
    《Advanced Functional Materials》 |2017年第1期|1603852.1-1603852.9|共9页
  • 作者

    Qiu Xiaoyu; Zhang Hanyue; Wu Peishan; Zhang Fengqi; Wei Shaohua; Sun Dongmei; Xu Lin; Tang Yawen;

  • 作者单位

    Nanjing Normal Univ, Jiangsu Key Lab New Power Batteries, Jiangsu Collaborat Innovat Ctr Biomed Funct Mat, Sch Chem & Mat Sci, Nanjing 210023, Jiangsu, Peoples R China;

    Nanjing Normal Univ, Jiangsu Key Lab New Power Batteries, Jiangsu Collaborat Innovat Ctr Biomed Funct Mat, Sch Chem & Mat Sci, Nanjing 210023, Jiangsu, Peoples R China;

    Nanjing Normal Univ, Jiangsu Key Lab New Power Batteries, Jiangsu Collaborat Innovat Ctr Biomed Funct Mat, Sch Chem & Mat Sci, Nanjing 210023, Jiangsu, Peoples R China;

    Nanjing Normal Univ, Jiangsu Key Lab New Power Batteries, Jiangsu Collaborat Innovat Ctr Biomed Funct Mat, Sch Chem & Mat Sci, Nanjing 210023, Jiangsu, Peoples R China;

    Nanjing Normal Univ, Jiangsu Key Lab New Power Batteries, Jiangsu Collaborat Innovat Ctr Biomed Funct Mat, Sch Chem & Mat Sci, Nanjing 210023, Jiangsu, Peoples R China;

    Nanjing Normal Univ, Jiangsu Key Lab New Power Batteries, Jiangsu Collaborat Innovat Ctr Biomed Funct Mat, Sch Chem & Mat Sci, Nanjing 210023, Jiangsu, Peoples R China;

    Nanjing Normal Univ, Jiangsu Key Lab New Power Batteries, Jiangsu Collaborat Innovat Ctr Biomed Funct Mat, Sch Chem & Mat Sci, Nanjing 210023, Jiangsu, Peoples R China;

    Nanjing Normal Univ, Jiangsu Key Lab New Power Batteries, Jiangsu Collaborat Innovat Ctr Biomed Funct Mat, Sch Chem & Mat Sci, Nanjing 210023, Jiangsu, Peoples R China;

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