Morphology-Controlled Synthesis of Palladium Nanostructures by Sonoelectrochemical Method and Their Application in Direct Alcohol Oxidation
Morphology-Controlled Synthesis of Palladium Nanostructures by Sonoelectrochemical Method and Their Application in Direct Alcohol Oxidation
复制标题
声电化学法形貌控制合成钯纳米结构及其在直接醇氧化中的应用
DOI：
10.1021/jp807881s
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发表时间：
2009-01
影响因子：
3.7
通讯作者：
Shi, Jianjun
中科院分区：
文献类型：
--
作者：
Min, Qianhao;Shen, Qingming;Jiang, Liping;Hou, Wenhua;Zhu, Jun-Jie;Zhang, Jian-Rong;Shi, Jianjun
采用一种简单的声电化学方法在室温下实现了钯纳米结构的形貌控制合成。在不同的表面活性剂或聚合物存在下，成功地制备了钯球形纳米粒子、多孪晶粒子和球形海绵状粒子（SSP）。结果表明，通过改变电流密度和前驱体溶液的pH值，可以控制Pd纳米结构的尺寸和形状。通过透射电子显微镜、高分辨率透射电子显微镜、场发射扫描电子显微镜、能量色散X射线和X射线衍射对Pd纳米结构进行了表征。讨论了可能的形成机理。此外，还系统研究了Pd纳米结构在碱性介质中对醇直接氧化的电催化性能。结果表明，与其他Pd纳米结构相比，SSPs具有更高的电化学活性表面，对乙醇的电氧化具有更稳定和更好的电催化性能。
A simple sonoelectrochemical method was used to realize the morphology-controlled synthesis of palladium nanostructures at room temperature. The palladium spherical nanoparticles, multitwinned particles, and spherical spongelike particles (SSPs) were successfully prepared in the presence of different surfactants or polymers. It was found that the size and shape of the Pd nanostructures could be controlled by varying current density and pH value of the precursor solution. The Pd nanostructures were characterized by transmission electron microscopy, high-resolution transmission electron microscopy, field emission scanning electron microscopy, energy-dispersive X-ray, and X-ray diffraction. The possible formation mechanism was discussed. In addition, the electrocatalytic properties of the Pd nanostructures for direct alcohol oxidation in alkaline media were systematically investigated. The results showed that SSPs had a higher electrochemical active surface and result in more stable and better electrocatalytic properties than other Pd nanostructures for the ethanol electrooxidation.
影响因子：
2
作者：
H. Lipson
通讯作者：
H. Lipson