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微波水热法合成钛酸钠盐纳米管

付敏1; 江志东1; 马紫峰1; 上官文峰2   

  1. 1. 上海交通大学化工系, 上海 200240; 2. 上海交通大学机械与动力工程学院, 上海 200030
  • 收稿日期:2004-07-08 修回日期:2004-09-20 出版日期:2005-07-20 网络出版日期:2005-07-20

Synthesis of Sodium Titanate Nanotubes by Microwave Hydrothermal Method

FU Min1; JIANG Zhi-Dong1; MA Zi-Feng1; SHANGGUAN Wen-Feng2   

  1. 1. Department of Chemical Engineering; Shanghai Jiaotong University; Shanghai 200240; China; 2. School of Mechanical and Power Engineering; Shanghai 200230; China
  • Received:2004-07-08 Revised:2004-09-20 Published:2005-07-20 Online:2005-07-20

摘要: 采用微波水热法合成了钛酸钠盐纳米管,考察了原料、反应时间、NaOH浓度等主要影响因素.在微波功率195W、NaOH浓度8—12mol/L、反应时间>70min条件下,得到了形貌均一的钛酸钠盐纳米管,并用TEM、XRD、BET、EDAX和N2吸附/脱附等对产物进行了表征.研究表明,微波法制得的纳米管合成时间短、热稳定性高,其管壁塌陷温度高于500℃,比普通水热法合成的高100℃左右;所得样品在300℃以上煅烧,可转化为单晶钛酸纳盐纳米管.

关键词: 钛酸钠纳米管, 微波水热合成, 热稳定性

Abstract:

The effects of raw material, reaction time, NaOH concentration were studied on the synthesis of sodium titanate nanotubes via a microwave hydrothermal method. Sodium titanate nanotubes with a uniform
morphology were synthesized in NaOH solution (8--12mol/L), heated by a microwave power of 195W over 70min. The samples were investigated by means of TEM, XRD, BET, EDAX and N2
adsorption/desorption technique. The nanotubes derived from the microwave hydrothermal method features shortened reaction time and higher thermal stability, with the tube structure collapsed
at a temperature over 500℃, 100℃ higher than that synthesized by the ordinary hydrothermal method. Furthermore, the samples after calcination at 300℃ will convert into
single crystalline sodium titanate nanotubes.

Key words: sodium titanate nanotubes, microwave hydrothermal synthesis, thermal stability

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