物理化学学报 >> 2005, Vol. 21 >> Issue (10): 1076-1080.doi: 10.3866/PKU.WHXB20051003

研究论文 上一篇    下一篇

过渡金属离子置换钛酸(盐)纳米管的合成和表征

宋旭春; 郑遗凡; 殷好勇; 曹广胜   

  1. 福建师范大学化学系, 福州 350007; 浙江大学化学系, 杭州 310027
  • 收稿日期:2005-01-03 修回日期:2005-03-30 发布日期:2005-10-15
  • 通讯作者: 宋旭春 E-mail:songxuchun2001@sina.com

Synthesis and Characterization of Transition Element Substituted Titanate Nanotubes

SONG Xu-chun; ZHENG Yi-fan; YIN Hao-yong; CAO Guang-sheng   

  1. Department of Chemistry, Fujian Normal University, Fuzhou 350007; Department of Chemistry, Zhejiang University, Hangzhou 310027
  • Received:2005-01-03 Revised:2005-03-30 Published:2005-10-15
  • Contact: SONG Xu-chun E-mail:songxuchun2001@sina.com

摘要: 以掺杂(Mn、Cr、Cu)的锐钛矿相二氧化钛纳米粉体为前驱体, 采用水热法合成了过渡金属离子置换的钛酸(盐)纳米管, 并用扫描电镜(SEM)、透射电镜(TEM)、能谱元素分析(EDX)、粉末X射线衍射(XRD)、 荧光发射光谱(PL)和拉曼光谱(Raman)对产物进行了表征. 结果表明, 过渡金属离子置换的钛酸(盐)纳米管荧光发射强度随金属离子的置换都有不同程度的降低, 一般认为低电子空穴对复合率意味着高光量子效率. 期望置换后的钛酸(盐)纳米管有可能在催化领域得到应用.

关键词: 水热法, 钛酸(盐), 置换, 纳米管

Abstract: Transition element (Mn, Cr, Cu) substituted titanate nanotubes were fabricated by a simple method, i.e., hydrothermal method. The precursors used were Mn, Cr and Cu doped anatase TiO2 nanopowders, which were 20~30 nm in diameter. The obtained samples were characterized by SEM, TEM, XRD, EDX, PL and Raman spectra. The results show that the fluorescence-emission intensity of the substituted titanate nanotubes decreases to some extent with the substitution of metal ions. It is generally considered that the low recombination efficiency of the electron-holes means the high quantum efficiency of the photons. So the results show that the transition element substituted titanate nanotubes might be applied in the photocatalysis.

Key words: Hydrothermal method, Titanate, Substitution, Nanotube