物理化学学报2011，Vol.27Issue(11)：2719-2725,7.
多孔硅的模板限制镁热还原法制备及性能
Confined Synthesis and Properties of Porous Silicon from Silica Aerogel Templates by Magnesiothermic Reduction
摘要
Abstract
Novel nanoporous silicon was successfully converted from SiO2 aerogels by a template-confined magnesiothermic reduction at low temperature (650 °C) based on a gas-solid reaction. The composition, crystal structure, morphology, and pore structure of the samples were analyzed by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared (FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS), and Brunauer-Emmett-Teller (BET) surface area analysis. Their optical and electrochemical properties were also investigated. The results indicated that the products consisted of nanocrystalline silicon, retained a morphology similar to that of the original templates, and possessed a specific surface area as high as 602 m2-g~\ They also showed red photoluminescence at room temperature and had a high capacity and good Li-ion insertion/extraction properties for use in lithium ion batteries.关键词
多孔硅/模板限制/镁热还原/气凝胶/高比表面积Key words
Porous silicon/ Template-confined/ Magnesiothermic reduction/ Aerogel/ High specific surface area分类
化学化工引用本文复制引用
陈珂,包志豪,刘冬,朱秀榕,张志华,周斌..多孔硅的模板限制镁热还原法制备及性能[J].物理化学学报,2011,27(11):2719-2725,7.基金项目
国家自然科学基金(51072137,50802064),国家科技支撑计划(2009BAC62B02),教育部新世纪优秀人才支持计划(NCET-08-0405)和教育部博士点基金(20090072110047,20100072110054)资助项目 （51072137,50802064）
