高等学校化学学报

高等学校化学学报

• 研究论文 • 上一篇    下一篇

碳酸镉@二氧化硅菱形体核壳结构以及二氧化硅菱形体空心结构微粒的制备

韩坤, 赵志慧, 相铮, 王燕萍, 张俊虎, 杨柏   

  1. 吉林大学超分子结构与材料教育部重点分子实验室, 长春 130023
  • 收稿日期:2005-09-06 修回日期:1900-01-01 出版日期:2006-06-10 发布日期:2006-06-10
  • 通讯作者: 杨柏

Preparation of Rhombohedral CdCO3@SiO2 Core-shell Particles and Hollow Rhombohedral SiO2 Particles

HAN Kun, ZHAO Zhi-Hui, XIANG Zheng, WANG Yan-Ping, ZHANG Jun-Hu, YANG Bai*   

  1. Key Laboratory for Supramolecular Structure & Materials, Ministry of Education, Jilin University, Changchun 130012, China
  • Received:2005-09-06 Revised:1900-01-01 Online:2006-06-10 Published:2006-06-10
  • Contact: YANG Bai

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被引次数

6

摘要： 利用Stöber种子生长法, 第一次在尺寸为2 μm左右的碳酸镉菱形微粒表面直接包覆二氧化硅层, 得到碳酸镉@二氧化硅核壳结构的胶体粒子. 作为核壳结构的壳层部分, 二氧化硅层的厚度可以通过加入体系中的正硅酸乙酯的量来控制. 作为核层的碳酸镉胶体部分可以被盐酸刻蚀掉, 进而得到具有菱形体空心结构的二氧化硅微粒.

Abstract: We report a facile method to coat rhombohedra CdCO3 microparticles with SiO2 directly by Stber seed growth method. CdCO3@SiO2 core-shell colloid particles were obtained, and the thickness of the SiO2 shell can be modulated in a certain range by adjusting the amount of tetraethyl orthosilicate(TEOS) which was added into the system. As a result, a new species was found which can be coated with SiO2 without surface modification. Furthermore, after removal CdCO3 particles with hydrochloric acid, hollow rhombohedra SiO2 particles were obtained which can be further used as microreactors and so on.

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