多孔硅的模板限制镁热还原法制备及性能

引用本文: 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. doi: 10.3866/PKU.WHXB20111110 shu

Citation: CHEN Ke, BAO Zhi-Hao, LIU Dong, ZHU Xiu-Rong, ZHANG Zhi-Hua, ZHOU Bin. Confined Synthesis and Properties of Porous Silicon from Silica Aerogel Templates by Magnesiothermic Reduction[J]. Acta Physico-Chimica Sinica, 2011, 27(11): 2719-2725. doi: 10.3866/PKU.WHXB20111110 shu

多孔硅的模板限制镁热还原法制备及性能

基金项目:
国家自然科学基金(51072137, 50802064) (51072137, 50802064)

国家科技支撑计划(2009BAC62B02) (2009BAC62B02)

教育部新世纪优秀人才支持计划(NCET-08-0405) (NCET-08-0405)

教育部博士点基金(20090072110047, 20100072110054)资助项目 (20090072110047, 20100072110054)

摘要: 采用一种基于气-固反应机制的模板限制镁热还原法, 以SiO₂气凝胶为模板在低温(650°C)下制备出一种高比表面积纳米多孔硅材料. 利用X射线衍射(XRD)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)、傅里叶变换红外(FTIR)光谱、X射线光电子能谱(XPS)和比表面积(BET)分析等表征手段对样品的成分、物相结构、微观形貌和孔结构进行分析, 并初步研究了材料的光学特性和电化学性能. 结果表明, 产物为纳米硅晶体颗粒组成的多孔结构, 保留了与原始气凝胶模板相似的微观形貌, 比表面积高达602 m²·g^-1. 该材料在室温下表现出显著的红光光致发光特性, 且具有较高的储锂容量和较好的嵌入/脱出锂性能.

关键词:

English

Confined Synthesis and Properties of Porous Silicon from Silica Aerogel Templates by Magnesiothermic Reduction

1.
Shanghai Key Laboratory of Special Microstructure Materials and Technology, Tongji University, Shanghai 200092, P. R. China
Received Date: 18 July 2011
Available Online: 27 October 2011
Fund Project:
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)

教育部博士点基金(20090072110047, 20100072110054)资助项目

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^-1. They also showed red photoluminescence at room temperature and had a high capacity and od Li-ion insertion/extraction properties for use in lithium ion batteries.

Key words:

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1.
沈阳化工大学材料科学与工程学院沈阳 110142

多孔硅的模板限制镁热还原法制备及性能

English

Confined Synthesis and Properties of Porous Silicon from Silica Aerogel Templates by Magnesiothermic Reduction

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南：你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

多孔硅的模板限制镁热还原法制备及性能

English

Confined Synthesis and Properties of Porous Silicon from Silica Aerogel Templates by Magnesiothermic Reduction

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南： 你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

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