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Preparation of diamond-based AuNP-modified nanocomposites with elevated catalytic performances

机译：催化性能升高的金刚石的AUNP改性纳米复合材料的制备

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摘要

Diamond@ graphene oxide@ gold nanoparticle (D@GO@AuNP) nanocomposite materials were synthesized by a modified Hummers method using diamond@ graphite composites that were obtained by the spark plasma sintering treatment of diamond, and gold nanoparticles that were prepared from a solution of HAuCl4 via reduction by NaBH4. The obtained diamond@ graphene oxide utilized as a catalytic carrier has great advantages, such as high specific surface area and a porous structure, which provide more opportunities for the gold nanoparticles to access the catalytic carrier. In addition, the prepared hierarchical diamond-based D@GO@AuNP nanocomposites are beneficial to improve the catalytic capacity of gold nanoparticles with higher dispersion on the GO surface. Catalytic experiments with 4-nitrophenol and 2-nitroaniline were carried out using the synthesized D@GO@AuNP material. The obtained nanocomposites demonstrated excellent catalytic activity and high recyclability, without any decrease in the weight of gold nanoparticles after eight cycles of catalytic reduction, indicating the potential applications of the composite catalytic materials.
机译：金刚石@ Graphene氧化物@金纳米粒子（D @ Go @ AUNP）纳米复合材料通过使用金刚石@石墨复合材料的改进的悍马方法合成，该石墨复合材料由由石灰的火花等离子体烧结处理获得，以及由溶液制备的金纳米粒子Haucl4通过Nabh4通过减少。所得金刚石@石墨烯氧化物用作催化载体具有很大的优点，例如高比表面积和多孔结构，其为金纳米颗粒提供更多机会以进入催化载体。此外，制备的等级基于钻石的D @ Go @ AUNP纳米复合材料有利于提高金纳米颗粒的催化容量，在去表面上具有更高的分散体。使用合成的D @ Go @ AUNP材料进行4-硝基苯酚和2-硝基苯胺的催化实验。所得纳米复合材料显示出优异的催化活性和高可回收性，而在催化还原8个循环后的金纳米颗粒的重量的任何减少，表明复合催化材料的潜在应用。

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  • 来源
    《RSC Advances》 |2017年第79期|共8页
  • 作者

    Zhao Xinna; Jiao Tifeng; Xing Ruirui; Huang Hao; Hu Jie; Qu Yuan; Zhou Jingxin; Zhang Lexin; Peng Qiuming;

  • 作者单位

    Yanshan Univ State Key Lab Metastable Mat Sci &

    Technol Qinhuangdao 066004 Peoples R China;

    Yanshan Univ State Key Lab Metastable Mat Sci &

    Technol Qinhuangdao 066004 Peoples R China;

    Yanshan Univ Sch Environm &

    Chem Engn Hebei Key Lab Appl Chem Qinhuangdao 066004 Peoples R China;

    Yanshan Univ State Key Lab Metastable Mat Sci &

    Technol Qinhuangdao 066004 Peoples R China;

    Yanshan Univ Sch Environm &

    Chem Engn Hebei Key Lab Appl Chem Qinhuangdao 066004 Peoples R China;

    Qinhuangdao Taiji Ring Nano Prod Co Ltd Qinhuangdao 066002 Peoples R China;

    Yanshan Univ Sch Environm &

    Chem Engn Hebei Key Lab Appl Chem Qinhuangdao 066004 Peoples R China;

    Yanshan Univ Sch Environm &

    Chem Engn Hebei Key Lab Appl Chem Qinhuangdao 066004 Peoples R China;

    Yanshan Univ State Key Lab Metastable Mat Sci &

    Technol Qinhuangdao 066004 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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