| 二氧化钛纳米粉体的加糖热解法制备 |
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| 引用本文： | 孙黎,齐建全,吴音,杜鹏,李龙土.二氧化钛纳米粉体的加糖热解法制备[J].稀有金属材料与工程,2009,38(Z2). |
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| 作者姓名： | 孙黎 齐建全 吴音 杜鹏 李龙土 |
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| 作者单位： | 1. 清华大学,新型陶瓷与精细工艺国家重点实验室,北京,100084
2. 中国地质大学,北京,100083 |
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| 摘 要： | 分别采用钛酸四丁酯(无水乙醇作为溶剂)和稳定的四氯化钛(蒸馏水作为溶剂)为两种钛源,以加糖热解法1]在不同的温度下处理得到二氧化钛粉体,并利用扫描电镜和X射线衍射对粉体微观结构和晶型进行分析.结果表明,两种制备方法得到的粉体晶粒尺寸均一,在50 nm左右.而锐钛矿和金红石型的成相温区存在明显差异:前者在300到500℃之间合成出较纯的锐钛矿相,600到700℃之间完成锐钛矿到金红石型的晶相转变;后者300℃就已经形成较好的锐钛矿结晶相,晶相转变发生在700到900℃之间.而两种方法的成相温度均低于一般方法.
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| 关 键 词： | 二氧化钛 纳米粉体制备 加糖热解法 |
Synthesis and Characterization of TiO_2 Nano Powders by Pyrogenation-with-Sugar-Protection Method |
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| Sun Li,Qi Jianquan,Wu Yin,Du Peng,Li Long tu.Synthesis and Characterization of TiO_2 Nano Powders by Pyrogenation-with-Sugar-Protection Method[J].Rare Metal Materials and Engineering,2009,38(Z2). |
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| Authors: | Sun Li Qi Jianquan Wu Yin Du Peng Li Long tu |
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| Affiliation: | Sun Li1,Qi Jianquan1,Wu Yin1,Du Peng2,Li Long tu1 (1. State Key Laboratory of Fine Ceramics , New Processing,Tsinghua University,Beijing 100084,China) (2. China University of Geosciences,Beijing 100083,China) |
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| Abstract: | Ti(OBu)4 with absolute alcohol as solvent and stabilized TiCl4 with distilled water as solutes were employed to be titanium resources,respectively,and TiO2 powders were obtained by pyrogenation-with-sugar-protection method. The microstructure and crystal type were analyzed by SEM and XRD. Results show that the obtained powders by both methods have uniform size of about 500 nm. However there are obvious differences in phase-formation temperature regions of anatase and rutile phase. The former method can synt... |
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| Keywords: | TiO_2 preparation of nano powders pyrogenation-with-sugar-protection |
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