无机材料学报

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碱性条件下二氧化硅介孔颗粒的形态控制

李中凯; 席红安; 钱雪峰; 印杰; 朱子康   

  1. 上海交通大学化学化工学院 上海 200240
  • 收稿日期:2002-07-31 修回日期:2002-10-14 出版日期:2003-09-20 网络出版日期:2003-09-20

Morphological Control of Mesoporous Silica in a Base Condition

LI Zhong-Kai; XI Hong-An; QIAN Xue-Feng; YIN Jie; ZHU Zi-Kang   

  1. School of Chemistry and Chemical Technology; Shanghai JiaoTong University; Shanghai 200240; China
  • Received:2002-07-31 Revised:2002-10-14 Published:2003-09-20 Online:2003-09-20

摘要: 在碱性条件下,以十六烷基三甲基溴化铵为模板剂,制备出二氧化硅介孔颗粒材料.本文应用TEM和XRD等测试手段研究了pH值、反应温度、前驱体及共溶剂浓度等因素对SiO2介孔颗粒形态的影响.结果证明,在适当的温度下,通过适当降低前驱体的浓度可以制备出粒径为30-50nm,孔道分布均匀,结构稳定的介孔材料.

关键词: 二氧化硅, 介孔颗粒, 形态控制

Abstract: Mesoporous silica with different morphologies was synthesized in a base medium. The effects of factors such as pH, reaction temperature, concentration of CTAB and EtOH on morphologies of mesoporous silica were studied by means of TEM and XRD. The silica particles with 30-50nm in diameter and well-ordered were synthesized.

Key words: silica, mesoporous particles, morphological control

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