物理化学学报 >> 2012, Vol. 28 >> Issue (09): 2209-2213.doi: 10.3866/PKU.WHXB201207031

材料物理化学 上一篇    下一篇

树枝状钯纳米结构的控制合成及硝基苯加氢反应的催化活性

谢婷1, 刘浩文1, 杨汉民1,2   

  1. 中南民族大学化学与材料科学学院, 武汉 430074
  • 收稿日期:2012-05-15 修回日期:2012-06-29 发布日期:2012-08-02
  • 通讯作者: 杨汉民 E-mail:yhm@mail.scuec.edu.cn
  • 基金资助:

    中央高校基本科研业务费用专项基金(ZZY10004)资助

Control Synthesis of Branched Palladium Nanostructures and the Catalytic Activity on Hydrogenation Reaction of Nitrobenzene

XIE Ting1, LIU Hao-Wen1, YANG Han-Min1,2   

  1. College of Chemistry and Material Science, South-Central University for Nationalities, Wuhan 430074, P. R. China
  • Received:2012-05-15 Revised:2012-06-29 Published:2012-08-02
  • Supported by:

    The project was supported by the Special Fund for Basic Scientific Research of Central Colleges, South-Central University for Nationalities, China (ZZY10004).

摘要:

以氯钯酸为前驱体, 苯甲醇为还原剂和溶剂, 十六烷基吡咯烷酮(PVP)为稳定剂, 在微波辐射下制备了分散均匀、形貌均一的树枝状钯纳米结构. 产物用透射电子显微镜(TEM), X射线粉末衍射(XRD), X射线光电子能谱(XPS)进行了表征, 表明所制备的Pd纳米颗粒呈树枝状, 形貌单一, 分散均匀, 是由许多近似圆形的小颗粒自组装而成的二级结构. 对树枝状钯催化硝基苯加氢反应进行探究, 表明树枝状钯的催化活性比市售的钯碳催化剂的催化活性高.

关键词: 钯, 纳米结构, 微波辐射, 硝基苯加氢, 生长过程

Abstract:

Branched palladium nanostructures were synthesized under microwave irradiation using polyvinylpyrrolidone (PVP) as stabilizer and benzyl glycol as the reducing agent of H2PdCl4. Morphology and structure were characterized by transmission electron microscopy (TEM), X-ray powder diffraction (XRD), and X-ray photoelectron spectroscopy (XPS), and showed that the branched Pd nanostructures were self-assemblies of hundreds of small spherical nanoparticles. Furthermore, catalytic properties of the branched Pd nanostructures were investigated for the hydrogenation of nitrobenzene, which indicated that the catalytic activity of the branched Pd nanostructures for this reaction is higher than that of a conventional Pd/C catalyst.

Key words: Palladium, Nanostructure, Microwave irradiation, Hydrogenation of nitrobenzene, Growth process

MSC2000: 

  • O647