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研究论文

Pt纳米空球粒径的可控制备及其甲醇电催化氧化

  • 林旋 ,
  • 程美琴 ,
  • 商中瑾 ,
  • 熊婷 ,
  • 张贤土 ,
  • 田伟 ,
  • 林剑云 ,
  • 钟起玲 ,
  • 任斌
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  • 1. 江西师范大学化学化工学院,江西 南昌 330022;2. 厦门大学 化学化工学院,固体表面物理化学国家重点实验室,福建 厦门 361005

收稿日期: 2014-03-18

  修回日期: 2014-04-10

  网络出版日期: 2014-04-15

基金资助

国家自然科学基金项目(No. 20663002)、厦门大学固体表面物理化学国家重点实验室基金(No. 200511)和江西省自然科学基金项目(No. 0620025)资助

Platinum Hollow Nanospheres with Different Sizes: Controllable Synthesis and Electrocatalytic Oxidation toward Methanol

  • LIN Xuan ,
  • CHENG Mei-Qin ,
  • SHANG Zhong-Jin ,
  • XIONG Ting ,
  • ZHANG Xian-Tu ,
  • TIAN Wei ,
  • LIN Jian-Yun ,
  • ZHONG Qi-Ling ,
  • REN Bin
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  • 1. College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China; 2. State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, Fujian, China

Received date: 2014-03-18

  Revised date: 2014-04-10

  Online published: 2014-04-15

摘要

利用表面活性剂十二烷基磺酸钠(SDSN)的调控合成不同粒径的硒模板和铂纳米空球(Pthollow),并将其修饰于玻碳(GC)基底即可制得Pthollow/GC电极;采用扫描电子显微镜(SEM)、透射电子显微镜(TEM)、高分辨透射电子显微镜(HR-TEM)和X射线光电子能谱等观察表征了Pthollow样品的形貌与组成;以甲醇为探针分子,研究Pthollow/GC和电沉积铂电极(Ptnano/GC)对甲醇氧化的电催化活性. 结果表明,由铂原子簇团构筑的多孔铂纳米空球粒径均匀,分散性好;用4 μmol·L-1 SDSN控制合成的直径为130 nm的Pthollow制备的Pthollow/GC电极对甲醇氧化的电催化活性最佳.

本文引用格式

林旋 , 程美琴 , 商中瑾 , 熊婷 , 张贤土 , 田伟 , 林剑云 , 钟起玲 , 任斌 . Pt纳米空球粒径的可控制备及其甲醇电催化氧化[J]. 电化学, 2014 , 20(6) : 571 -575 . DOI: 10.13208/j.electrochem.140318

Abstract

The selenium (Se) templates and hollow platinum (Pthollow) nanospheres with different sizes were controllably synthesized by adjusting the concentration of sodium dodecyl sulphonate (SDSN) (CSDSN, μmol·L-1) which was used as a surfactant. Accordingly, the Pthollow nanospheres modified glassy carbon (GC) electrode (Pthollow/GC) was prepared. The morphology and composition of Pthollow nanospheres were characterized by scanning electron microscopy (SEM), transmission electron microscope (TEM), energy dispersive X-ray spectroscopy (EDX), high resolution transmission electron microscopy (HRTEM), selected area electron diffraction (SAED) and X-ray diffraction (XRD) techniques. The electrocatalytic activities of Pthollow/GC and electrodeposited Pt nanoparticles modified glassy carbon electrode (Ptnano/GC) toward methanol oxidation were studied. The results showed that the uniform diameter sizes with well distributions were obtained with the synthesized porous Pthollow nanospheres constructed by Pt atom clusters were . The best electrocatalytic activity toward methanol oxidation was achieved with the Pthollow/GC having a diameter of 130 nm synthesized with CSDSN = 4 μmol·L-1
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