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Well-dispersed graphene-polydopamine-Pd hybrid with enhanced catalytic performance

机译：具有增强催化性能的良好分散的石墨烯-聚二胺 - PD杂交物

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摘要

Inspired by the discovery of adhesive proteins in mussels, we prepared a graphene-polydopamine (GPDA) hybrid, in which the commonly used graphene oxide was replaced by graphene synthesized through physical routes. Then, the hybrid was decorated with ultrafine Pd nanoparticles to obtain a catalyst that was stable and well-dispersed in polar solvents. The Pd nanoparticles on graphene-polydopamine (GPDAP) were 2.0 nm on average and showed good monodispersibility on the polydopamine-modified graphene, whereas the Pd particles on unmodified graphene (GP) were larger than 4.5 nm and were obviously aggregated. The catalytic activity of the catalyst was investigated in the reduction of 4-nitrophenol (4-NP), K-3[Fe(CN)(6)], methylene blue (MB) and rhodamine B (RhB), which are common industrial pollutants. A comparison between Pd/C (CP), GP and GPDA showed that the prepared catalyst, GPDAP, showed superior activity even when just a tiny amount of catalyst was added.
机译：通过在贻贝中发现粘合剂蛋白的启发，我们制备了一种石墨烯 - 多胺（GPDA）杂种，其中常用的石墨烯氧化物被通过物理途径合成的石墨烯代替。 然后，用超细Pd纳米颗粒装饰杂种以获得稳定且分散在极性溶剂中的催化剂。 在石墨烯 - 聚二氨基胺（GPDAP）上的Pd纳米颗粒平均为2.0nm，并在多胺改性石墨烯上显示出良好的单一性能，而未修饰的石墨烯（GP）上的Pd颗粒大于4.5nm，并且明显聚集。 研究催化剂的催化活性在4-硝基苯酚（4-NP），K-3 [Fe（CN）（6）），亚甲基蓝（MB）和Rhodamine B（RHB）中，这是普通工业的 污染物。 PD / C（CP），GP和GPDA之间的比较表明，即使加入少量催化剂，制备的催化剂GPDAP也显示出优异的活性。

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  • 来源
    《RSC Advances》 |2015年第118期|共8页
  • 作者

    Ma Jian-Xin; Yang Honglei; Li Shuwen; Ren Ren; Li Jing; Zhang Xueyao; Ma Jiantai;

  • 作者单位

    Lanzhou Univ Coll Chem &

    Chem Engn Gansu Prov Engn Lab Chem Catalysis State Key Lab Appl Organ Chem Lanzhou 730000 Peoples R China;

    Lanzhou Univ Coll Chem &

    Chem Engn Gansu Prov Engn Lab Chem Catalysis State Key Lab Appl Organ Chem Lanzhou 730000 Peoples R China;

    Lanzhou Univ Coll Chem &

    Chem Engn Gansu Prov Engn Lab Chem Catalysis State Key Lab Appl Organ Chem Lanzhou 730000 Peoples R China;

    Lanzhou Univ Coll Chem &

    Chem Engn Gansu Prov Engn Lab Chem Catalysis State Key Lab Appl Organ Chem Lanzhou 730000 Peoples R China;

    Lanzhou Univ Coll Chem &

    Chem Engn Gansu Prov Engn Lab Chem Catalysis State Key Lab Appl Organ Chem Lanzhou 730000 Peoples R China;

    Lanzhou Univ Coll Chem &

    Chem Engn Gansu Prov Engn Lab Chem Catalysis State Key Lab Appl Organ Chem Lanzhou 730000 Peoples R China;

    Lanzhou Univ Coll Chem &

    Chem Engn Gansu Prov Engn Lab Chem Catalysis State Key Lab Appl Organ Chem Lanzhou 730000 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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