Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报

ZHONGGUO YOUSEJINSHU XUEBAO

第14卷    第9期    总第66期    2004年9月

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文章编号:1004-0609(2004)09-1456-05
Bi2Te3纳米颗粒和纳米线的溶剂热合成及
组织特征
吉晓华1, 2, 赵新兵1, 张艳华1, 3, 卢波辉1, 倪华良1

(1. 浙江大学 硅材料国家重点实验室, 杭州 310027; 
2. 太原理工大学 材料科学与工程学院, 太原 030024;
3. 中国人民解放军北京机械士官学校, 北京 102249
)

摘 要: 分别以吡啶、 无水乙醇为反应介质,以NaBH4为还原剂,采用溶剂热合成方法, 在150℃下反应24h制备了平均晶粒尺寸为15~20nm的Bi2Te3纳米粒子。采用相同的合成方法, 以去离子水为反应介质, 合成了直径为30~80nm,长径比大于100的Bi2Te3纳米线。 XRD和TEM分析表明, 随着溶剂介电常数和极性增加,所生成产物的物相纯度、 结晶度增高, 晶粒尺寸增大。 

 

关键字: Bi2Te3; 溶剂热合成; 纳米颗粒; 纳米线

Solvothermal synthesis and characterizations of Bi2Te3 nano-particles and nanowires
JI Xiao-hua1, 2, ZHAO Xin-bing1, ZHANG Yan-hua1, 3, LU Bo-hui1, NI Hua-liang1

1.State Key Laboratory of Silicon Materials,
Zhejiang University, Hangzhou 310027, China;
2. Institute of Materials Science and Engineering,
Taiyuan University of Technology, 
Taiyuan 030024, China;
3. Beijing Petty Officer School of Mechanics, Beijing 102249, China

Abstract: Bi2Te3 nano-particles with the average sizes of 15~20nm were prepared by solvothermal synthesis at 150℃ for 24h using pyridine or ethanol as the reaction medium and NaBH4 as the reductant. Bi2Te3 nanowires with diameters less than 100nm and aspect ratios larger than 100 were solvothermally synthesized in distilled water by similar method. XRD and TEM analyses show that the phase purity, crystallization and particle sizes of synthesized powders increase with the increase of the dielectric constant and polarity of the solvent.

 

Key words: Bi2Te3 ; solvothermal synthesis; nano-particles; nanowire

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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