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电化学(中英文) ›› 2014, Vol. 20 ›› Issue (6): 571-575.  doi: 10.13208/j.electrochem.140318

• 研究论文 • 上一篇    下一篇

Pt纳米空球粒径的可控制备及其甲醇电催化氧化

林旋1,程美琴1,商中瑾1,熊婷1,张贤土1,田伟1,林剑云1,钟起玲1*,任斌2   

  1. 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 出版日期:2014-12-28 发布日期:2014-04-15
  • 通讯作者: 钟起玲 E-mail:zhqiling@163.com
  • 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 Xuan1, CHENG Mei-qin1, SHANG Zhong-jin1, XIONG Ting1,ZHANG Xian-tu1, TIAN Wei1, LIN Jian-yun1, ZHONG Qi-ling1*, REN Bin2   

  1. 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:2014-03-18 Revised:2014-04-10 Published:2014-12-28 Online:2014-04-15
  • Contact: ZHONG Qi-ling E-mail:zhqiling@163.com

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.

关键词: 硒模板, 铂空球, 循环伏安, 计时电流

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

Key words: Se template, Pt hollow nanosphere, cyclic voltammetry, current time curves

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