Hydrothermal synthesis and characterization of mesoporous SnO2/SnO2-SiO2 on neutral template

被引：14
作者：
Zhu, Jie
Tay, B. Y.
Ma, Jan
机构：
[1] Nanyang Technol Univ, Sch Mat Sci & Engn, Singapore 639798, Singapore
[2] Singapore Inst Mfg Technol SIMTech, ASTAR, Singapore 638075, Singapore
来源：
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY | 2007年 / 192卷
关键词：
mesoporous; thermal stability; surfactant template; tin oxide/silica; hydrothermal treatment; crystal growth;
D O I：
10.1016/j.jmatprotec.2007.04.071
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Mesoporous SnO2/SnO-SiO2 with disordered pores and high thermal stability up to 600 degrees C were fabricated using hydrothermal treatment with/without impurity oxide (SiO2) doping. Neutral surfactant (tetradecylamine, TDA) was selected as the structure directing agent based on a sol-gel-derived process. The results showed that with careful control of the synthesis condition, mesoporous SnO2-SiO2 with small SnO2 nanocrystallites (similar to 25 angstrom). large specific surface area (211-340 m(2)/g), and pore volume (0.23-0.3 cm(2)/g) could be obtained after the removal of template at temperatures of 400-600 degrees C. The effects of synthesis parameters such as aging time, hydrothermal treatment, Si/Sn molar ratio and calcination temperature were characterized by thermogravimetric analysis, wide/small-angle X-ray scattering (SAXS), HRTEM, and BET gas (N-2) adsorption/desorption measurements. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：561 / 566
页数：6
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