物理化学学报 >> 2010, Vol. 26 >> Issue (08): 2177-2181.doi: 10.3866/PKU.WHXB20100803

胶体及界面化学 上一篇    下一篇

合成介孔纳米晶体氧化锆的新方法

车红卫1, 韩书华1, 侯万国1,2, 刘爱凤1   

  1. 1. 山东大学胶体与界面教育部重点实验室, 济南 250100;
    2. 青岛科技大学化学与分子工程学院, 山东 青岛 266042
  • 收稿日期:2010-03-26 修回日期:2010-05-05 发布日期:2010-07-23
  • 通讯作者: 韩书华, 侯万国 E-mail:shuhhan@sdu.edu.cn; wghou@sdu.edu.cn
  • 基金资助:

    国家自然科学基金(50572057)资助项目

Novel Synthesis of Mesoporous Nanocrystalline Zirconia

CHE Hong-Wei1, HAN Shu-Hua1, HOU Wan-Guo1,2, LIU Ai-Feng1   

  1. 1. Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan 250100, P. R. China;
    2. College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, Shandong Province, P. R. China
  • Received:2010-03-26 Revised:2010-05-05 Published:2010-07-23
  • Contact: HAN Shu-Hua, HOU Wan-Guo E-mail:shuhhan@sdu.edu.cn; wghou@sdu.edu.cn
  • Supported by:

    The project was supported by the National Natural Science Foundation of China (50572057).

摘要:

通过一种新颖的方法, 即软模板-固液技术(CSSL)合成具有高比表面积的介孔纳米晶体氧化锆. 首先, 通过软模板法以1-十六烷基-3-甲基咪唑溴(C16mim+Br-)为结构导向剂, 硫酸锆为无机前驱物合成了介观相氧化锆杂化物, 然后该杂化物与固体硝酸铜无机盐研磨并进行热处理. 在600 ℃焙烧后所得到的氧化锆材料具有蠕虫状介孔结构, 且孔壁由尺寸约为2.50 nm的四方相氧化锆纳米粒子组成. 该材料的比表面积为240.0 m2·g-1, 孔径为4.10 nm. 与之对应, 使用单一的软模板法在相同的温度焙烧后, 所得到的氧化锆材料介孔结构坍塌, 比表面积仅为9.5 m2·g-1.

关键词: 介孔, 氧化锆, 纳米晶体, 软模板法, 热稳定性

Abstract:

A novel strategy involving the combination of soft-templating and the solid-liquid method (CSSL) is presented for the synthesis of mesoporous nanocrystalline zirconia with a high specific surface area. The mesostructured zirconia hybrid is firstly synthesized by the soft-templating method using 1-hexadecyl-3-methylimidazolium bromide (C16mim+Br-) as the structure-directing agent and zirconium sulphate as an inorganic precursor. It is then ground in the presence of solid copper nitrate followed by heat-treatment in air. The resulting zirconia material, after calcination at 600 ℃, possesses a wormlike arrangement of mesopores surrounded by tetragonal ZrO2 nanocrystallites of ca 2.50 nm diameter. The Brunauer-Emmett-Teller (BET) surface area is 240.0 m2·g-1 and the pore size is 4.10 nm. However, no mesoporous structure exists in the obtained zirconia material that was produced using the simple soft-templating method at the same calcination temperature. The BET surface area is only 9.5 m2·g-1 for this material.

Key words: Mesoporous, Zirconia, Nanocrystalline, Soft-templating method, Thermal stability

MSC2000: 

  • O648