One-step synthesis of 3D dendritic gold@polypyrrole nanocomposites via a simple self-assembly method and their electrocatalysis for H2O2

One-step synthesis of 3D dendritic gold@polypyrrole nanocomposites via a simple self-assembly method and their electrocatalysis for H2O2
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通过简单的自组装方法一步合成3D树枝状金@聚吡咯纳米复合材料及其对H2O2的电催化

DOI:
10.1016/j.electacta.2011.11.003
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发表时间:
2012-01
影响因子:
6.6
通讯作者:
Song, Wenbo
Song, Wenbo
中科院分区:
材料科学2区
文献类型:
--
作者:
Xue, Kaiwen;Xu, Yang;Song, Wenbo

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以聚对苯乙烯磺酸钠(PSS)为掺杂剂和表面活性剂,通过吡咯单体和氯金酸(HAuCl 4)的自组装反应,成功地合成了球形三维树枝状金@聚吡咯(PPy)纳米复合材料。树枝状Au @PPy纳米复合物的形成概率和尺寸取决于PSS、吡咯和HAuCl 4的浓度以及反应温度。通过扫描电子显微镜、透射电子显微镜、X射线衍射和X射线光电子能谱对树枝状AuNPs@PPy纳米复合材料进行了表征。此外,AuNPs@PPy纳米复合材料对H2 O2具有良好的电催化活性,在传感领域具有潜在的应用前景。
Novel spherical three-dimensional (3D) dendritic gold@polypyrrole (PPy) nanocomposites were successfully synthesized by reacting pyrrole monomer with chloroauric acid (HAuCl4) through a self-assembly process in the presence of poly(sodium 4-styrenesulfonate) (PSS), which acts as both dopant and surfactant. The formation probability and the size of the dendritic gold@PPy nanocomposites depended on the concentrations of PSS, pyrrole and HAuCl4, and reaction temperature. The dendritic AuNPs@PPy nanocomposites were confirmed by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. In addition, the AuNPs@PPy nanocomposites had high electrocatalytic activity toward H2O2, which showed excellent potential application in sensing.
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