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首页> 外文期刊>Advanced Functional Materials >Deriving Efficient Porous Heteroatom-Doped Carbon Electrocatalysts for Hydrazine Oxidation from Transition Metal Ions-Coordinated Casein
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Deriving Efficient Porous Heteroatom-Doped Carbon Electrocatalysts for Hydrazine Oxidation from Transition Metal Ions-Coordinated Casein

机译：从过渡金属离子配位的酪蛋白衍生高效多孔杂原子掺杂碳电极催化肼氧化

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摘要

In this work, the synthesis of high-performance, metal ion-imprinted, mesoporous carbon electrocatalysts for hydrazine oxidation reaction (HzOR) using casein or a family of phosphoproteins derived from cow's milk as a precursor is shown. The synthesis is made possible by mixing trace amounts of non-noble metal ions (Fe3+ or Co2+) with casein and then producing different metal ions-functionalized casein intermediates, which upon carbonization, followed by acid treatment, lead to metal ion-imprinted catalytically active sites on the materials. The materials effectively electrocatalyze HzOR with low overpotentials at neutral pH and exhibit among the highest electrocatalytic performances ever reported for carbon catalysts. Their catalytic activities are also better than the corresponding control material, synthesized by carbonization of pure casein and other materials previously reported for HzOR. This work demonstrates a novel synthetic route that transforms an inexpensive protein to highly active carbon-based electrocatalysts by modifying its surfaces with trace amounts of non-noble metals. The types of metal ions employed in the synthesis are found to dictate the electrocatalytic activities of the materials. Notably, Fe3+ is found to be more effective than Co2+ in helping the conversion of casein into more electrocatalytically active carbon materials for HzOR.
机译：在这项工作中，显示了使用酪蛋白或衍生自牛乳的磷酸蛋白家族合成用于肼氧化反应（HzOR）的高性能金属离子印迹介孔碳电催化剂。通过将痕量的非贵金属离子（Fe3 +或Co2 +）与酪蛋白混合，然后生成不同的金属离子官能化的酪蛋白中间体，可以实现合成，这些中间体在碳化后进行酸处理，从而导致金属离子印迹的催化活性材料上的位置。该材料在中性pH下能有效地电催化具有低过电势的HzOR，并表现出碳催化剂有史以来最高的电催化性能。它们的催化活性也优于相应的对照材料，后者是由纯酪蛋白和以前报道的HzOR的其他材料碳化而合成的。这项工作展示了一种新颖的合成路线，该路线可以通过用痕量的非贵金属修饰其表面，将廉价的蛋白质转变为高活性碳基电催化剂。发现合成中使用的金属离子的类型决定了材料的电催化活性。值得注意的是，发现Fe3 +比Co2 +更有效地帮助酪蛋白转化为HzOR的更具电催化活性的碳材料。

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  • 来源
    《Advanced Functional Materials》 |2019年第8期|1808486.1-1808486.12|共12页
  • 作者

    Fragal Vanessa H.; Fragal Elizangela H.; Zhang Tao; Huang Xiaoxi; Cellet Thelma Sley P.; Pereira Guilherme M.; Jitianu Andrei; Rubira Adley F.; Silva Rafael; Asefa Tewodros;

  • 作者单位

    Univ Estadual Maringa, Dept Quim, Ave Colombo 5790, BR-87020900 Maringa, Parana, Brazil;

    Univ Estadual Maringa, Dept Quim, Ave Colombo 5790, BR-87020900 Maringa, Parana, Brazil;

    Rutgers State Univ, Dept Chem & Biochem Engn, 98 Brett Rd, Piscataway, NJ 08854 USA;

    Rutgers State Univ, Dept Chem & Chem Biol, 610 Taylor Rd, Piscataway, NJ 08854 USA;

    Univ Estadual Maringa, Dept Quim, Ave Colombo 5790, BR-87020900 Maringa, Parana, Brazil;

    Univ Estadual Maringa, Dept Quim, Ave Colombo 5790, BR-87020900 Maringa, Parana, Brazil;

    CUNY, Dept Chem, Lehman Coll, 250 Bedford Pk Blvd West, Bronx, NY 10468 USA|CUNY, Grad Ctr, 365 Fifth Ave, New York, NY 10016 USA;

    Univ Estadual Maringa, Dept Quim, Ave Colombo 5790, BR-87020900 Maringa, Parana, Brazil;

    Univ Estadual Maringa, Dept Quim, Ave Colombo 5790, BR-87020900 Maringa, Parana, Brazil;

    Rutgers State Univ, Dept Chem & Biochem Engn, 98 Brett Rd, Piscataway, NJ 08854 USA|Rutgers State Univ, Dept Chem & Chem Biol, 610 Taylor Rd, Piscataway, NJ 08854 USA;

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  • 关键词

    carbon materials; casein; electrocatalysis; hydrazine oxidation; imprinted actives sites;

    机译：碳材料;酪蛋白;电催化;肼氧化;印迹活性部位;

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