高等学校化学学报 ›› 2010, Vol. 31 ›› Issue (6): 1213.

• 研究论文 • 上一篇    下一篇

核壳结构镍的制备及催化性能

郝维昌, 翟亭亭, 王旭, 王天民   

  1. 北京航空航天大学材料物理与化学研究中心, 北京 100083
  • 收稿日期:2009-11-16 出版日期:2010-06-10 发布日期:2010-06-10
  • 通讯作者: 郝维昌, 男, 博士, 副教授, 主要从事新型催化材料的研究. E-mail: whao@buaa.edu.cn
  • 基金资助:

    国家自然科学基金(批准号: 50732004)资助.

Fabrication and Catalytic Activity of Nickel Core-shell Structure

HAO Wei-Chang*, ZHAI Ting-Ting, WANG Xu, WANG Tian-Min   

  1. Center of Materials Physics and Chemistry, Beihang University, Beijing 100083, China
  • Received:2009-11-16 Online:2010-06-10 Published:2010-06-10
  • Contact: HAO Wei-Chang. E-mail: whao@buaa.edu.cn
  • Supported by:

    国家自然科学基金(批准号: 50732004)资助.

摘要:

利用软化学方法制备出了聚苯乙烯(PS)/镍核壳结构和纳米镍催化剂, 并利用SEM和XRD对材料的形貌和结构进行了表征. 将上述催化剂应用于亚甲基蓝染料加氢反应, 一步实现染料褪色和硼氢化钠水解制氢. 研究表明, 核壳结构极大地提高了镍的催化能力. 在相同条件下, 核壳结构镍的加氢催化效率是纳米镍的1.42倍, 产氢效率是纳米镍的4.76倍, 这说明核壳结构在催化领域具有一定的优势.

关键词: 核壳结构; 镍催化剂; 染料脱色; 产氢

Abstract:

Nickel has received wide application in industry catalyst field. PS/Ni core-shell structure and Ni nanoparticles were fabricated by soft chemical methods, and SEM, XRD were used to characterize the morphology and structure of samples. The catalytic performances of the PS/Ni and Ni nanoparticles were evaluated using methylene blue as a model reagent. This experiment realized degradation of dye and hydrogen production via NaBH4 hydrolysis in one step. The results show that the core-shell structure promotes the catalytic activity of nickel. The degradation efficiency of dye and hydrogen production velocity using PS/Ni catalyst is 1.42 and 4.76 times higher than that using Ni nanoparticle catalyst, respectively. The advantage of core-shell structure in catalysis is proved.

Key words: Core-shell structure; Nickel catalyst; Dye decolorization; Hydrogen production

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