模板法Li4Ti5O12纳米线阵列的制备及其机理分析

doi:10.3724/SP.J.1077.2011.00529

无机材料学报 ›› 2011, Vol. 26 ›› Issue (5): 529-534.DOI: 10.3724/SP.J.1077.2011.00529

模板法Li₄Ti₅O₁₂纳米线阵列的制备及其机理分析

池永庆^1,2, 陈旭¹, 张忠林¹, 刘世斌¹, 段东红¹, 郝晓刚¹, 孙彦平¹

(1. 太原理工大学洁净化工研究所, 太原 030024; 2. 太原科技大学, 太原 030021)

收稿日期:2010-08-06 修回日期:2010-09-26 出版日期:2011-05-20 网络出版日期:2011-06-07
作者简介:池永庆(1963-), 男, 副教授, 博士研究生.
基金资助:
教育部博士点基金(20091402110009); 国家自然科学基金(20676088)

Synthesis and Formation Mechanism of Li₄Ti₅O₁₂ Nanoarrays by Template Method

CHI Yong-Qing^1,2, CHEN Xu¹, ZHANG Zhong-Lin¹, LIU Shi-Bin¹, DUAN Dong-Hong¹, HAO Xiao-Gang¹, SUN Yan-Ping¹

(1. Chemical Engineering Department, Taiyuan University of Technology, Taiyuan 030024, China; 2. Taiyuan University of Science and Technology, Taiyuan 030021, China)

Received:2010-08-06 Revised:2010-09-26 Published:2011-05-20 Online:2011-06-07
Supported by:
PhD Programs Foundation of Ministry of Education of China (20091402110009); National Natural Science Foundation of China (20676088)

摘要/Abstract

摘要： 通过溶胶填充模板法制备了Li₄Ti₅O₁₂纳米线阵列, 采用SEM、EDS、XRD对纳米线形貌和组成进行了表征. 实验结果表明: 以孔径为100nm阳极氧化铝模板(AAO), 于-0.1MPa负压环境中填充0.8 mol/L Li₄Ti₅O₁₂溶胶, 80℃干燥, 900℃空气气氛中焙烧20h, 重复填充-干燥-焙烧四次, 得到平均直径为70nm尖晶石结构的Li₄Ti₅O₁₂纳米线阵列. 其直径和长度分别由模板的孔径、厚度, 溶胶浓度和填充次数控制, 晶体结构取决于焙烧时间和温度. 并在实验基础上, 分析了纳米线形成机理.

关键词: Li₄Ti₅O₁₂, 纳米线阵列, 氧化铝模板, 填充, 机理

Abstract: Li₄Ti₅O₁₂ nanoarrays were prepared with sol-filling template method. The morphology and structure of Li₄Ti₅O₁₂ nanoarrays were characterized by SEM, EDS and XRD. The experimental results show that spinel Li₄Ti₅O₁₂ nanoarrays with average diameter of 70nm are obtained by repeating the following steps for four times: immersing the porous AAO in sol of 0.8mol/L under -0.1MPa and drying at 80℃, then roasting at 900℃ for 20h in the air. The diameter and length of Li₄Ti₅O₁₂ nanoarrays are controlled by diameter, thickness, sol concentration and filling times, with the crystalline structure rested on the roasting time and temperature. On the basis of characterization for nanoarrays, a possible formation mechanism is supposed.

Key words: Li₄Ti₅O₁₂, nanoarrays, aluminum oxide template, filling, mechanism

中图分类号:

O614

池永庆, 陈旭, 张忠林, 刘世斌, 段东红, 郝晓刚, 孙彦平. 模板法Li₄Ti₅O₁₂纳米线阵列的制备及其机理分析[J]. 无机材料学报, 2011, 26(5): 529-534.

CHI Yong-Qing, CHEN Xu, ZHANG Zhong-Lin, LIU Shi-Bin, DUAN Dong-Hong, HAO Xiao-Gang, SUN Yan-Ping. Synthesis and Formation Mechanism of Li₄Ti₅O₁₂ Nanoarrays by Template Method[J]. Journal of Inorganic Materials, 2011, 26(5): 529-534.

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模板法Li₄Ti₅O₁₂纳米线阵列的制备及其机理分析

Synthesis and Formation Mechanism of Li₄Ti₅O₁₂ Nanoarrays by Template Method

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