三维有序大孔SnO2及SnO2/SiO2材料的制备及结构特征

无机材料学报

三维有序大孔SnO₂及SnO₂/SiO₂材料的制备及结构特征

邬泉周; 沈勇; 孙振范; 李玉光

中山大学化学与化学工程学院广州 510275

收稿日期:2003-06-11 修回日期:2003-07-07 出版日期:2004-07-20 网络出版日期:2004-07-20

Synthesis and Structure Characteristic of Three-dimensional Ordered Macroporous SnO₂ and SnO₂/SiO₂ Materials

WU Quan-Zhou; SHEN Yong; SUN Zhen-Fan; LI Yu-Guang

School of Chemistry and Chemical Engineering; Zhongshan University; Guangzhou 510275; China

Received:2003-06-11 Revised:2003-07-07 Published:2004-07-20 Online:2004-07-20

摘要/Abstract

摘要： 以SnCl₂-2H₂O和正硅酸乙酯为原料,用微球直径为585nm的聚苯乙烯胶晶为模板,制备了三维有序大孔SnO₂和SnO₂/SiO₂材料。SEM观察表明,直接用SnCl₂的乙醇溶液为前驱物溶液,难以形成有序的大孔结构,加入正硅酸乙酯或将SnCl₂溶液转变为氧化物溶胶,则得到的大孔材料孔结构三维有序排列相当好,孔径为453-500nm,孔与孔之间通过小孔相连。XRD分析表明,大孔材料孔壁由晶粒直径约为17nm SnO₂粒子构成。

关键词: 聚苯乙烯, 胶晶, 三维有序大孔, SnO₂

Abstract: By using SnCl₂·2H₂O and tetraethyl orthosilicate as raw materials, polystyrene colloidal crystal
with diameter of 585nm as template, three-dimensional ordered macroporous (3DOM) SnO₂ and SnO₂/SiO₂ were successfully synthesized.
SEM observation shows that 3DOM SnO_2 has a pore size of 453～500nm, and 3DOM SnO₂/SiO₂ has a pore size of 500nm. And such macropores
connect with each other by small windows. Compared with the polystyrene colloidal crystal used, the 3DOM materials show shrinkage to some extent
in pore size. The study indicates that it is difficult to obtain ordered pore structure when SnCl₂ is used as precursor directly. But addition of
tetraethyl orthosilicate or conversion of SnCl₂ solution to oxide sol favors the formation of the highly ordered macroporous structure. XRD
measurement indicates that the walls of the 3DOM materials are made of SnO₂ nanoparticles with particle sizes around 17nm.

Key words: colloidal crystal, polystyrene, three-dimensional ordered macroporous, SnO₂

中图分类号:

O643
TM285

邬泉周,沈勇,孙振范,李玉光. 三维有序大孔SnO₂及SnO₂/SiO₂材料的制备及结构特征[J]. 无机材料学报.

WU Quan-Zhou,SHEN Yong,SUN Zhen-Fan,LI Yu-Guang. Synthesis and Structure Characteristic of Three-dimensional Ordered Macroporous SnO₂ and SnO₂/SiO₂ Materials[J]. Journal of Inorganic Materials.

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三维有序大孔SnO₂及SnO₂/SiO₂材料的制备及结构特征

Synthesis and Structure Characteristic of Three-dimensional Ordered Macroporous SnO₂ and SnO₂/SiO₂ Materials

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