研究论文

钇或钕掺杂TiO2纳米纤维的制备及光催化性能研究

  • 王进贤 ,
  • 郭月秋 ,
  • 董相廷 ,
  • 李志国 ,
  • 刘桂霞
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  • 长春理工大学 化学与环境工程学院, 长春 130022

收稿日期: 2009-08-10

  修回日期: 2009-11-17

  网络出版日期: 2010-04-27

Preparation and Photocatalytic Activities of Y3+ or Nd3+doped TiO2 Nanofibres

  • WANG Jin-Xian ,
  • GUO Yue-Qiu ,
  • DONG Xiang-Ting ,
  • LI Zhi-Guo ,
  • LIU Gui-Xia
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  • School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun 130022, China

Received date: 2009-08-10

  Revised date: 2009-11-17

  Online published: 2010-04-27

摘要

采用静电纺丝技术,以Ti(SO4)2、聚乙烯吡咯烷酮(PVP,Mr=1300000)、稀土氧化物和N,N-二甲基甲酰胺(DMF)为原料,成功地制备了TiO2
Y/TiO2和Nd/TiO2纳米纤维.用XRD、FESEM、TEM和TGDTA等分析手段对样品进行了表征.XRD分析结果表明,当焙烧温度为550℃时得到纯锐钛矿
相RE/TiO2(RE=Y, Nd)纳米纤维,900℃时得到纯金红石型RE/TiO2(RE=Y, Nd)纳米纤维,稀土离子显著降低了TiO2的晶格参数.FESEM分析结
果表明,RE/TiO2(RE=Y, Nd)纳米纤维直径约为50nm、长度>300μm.以罗丹明B和苯酚为目标降解物,研究了三种催化剂的光催化性能.其中,
1.5mol%Y/TiO2光催化剂对罗丹明B的降解效率较高,而1.0mol%Nd/TiO2对苯酚具有较好的降解活性.因此,掺杂不同稀土离子的TiO2纳米纤维对
不同降解物的降解能力不同.

本文引用格式

王进贤 , 郭月秋 , 董相廷 , 李志国 , 刘桂霞 . 钇或钕掺杂TiO2纳米纤维的制备及光催化性能研究[J]. 无机材料学报, 2010 , 25(4) : 379 -385 . DOI: 10.3724/SP.J.1077.2010.00379

Abstract

TiO2 nanofibres, Y3+-doped and Nd3+-doped TiO2 nanofibres were successfully fabricated by electrospinning using Ti(SO4)2,
polyvinyl pyrrolidone(PVP, Mr=1300000), rare earth oxides and dimethyl formamide(DMF) as raw materials. The samples were
characterized by XRD, FESEM, TEM, and TGDTA. XRD analysis indicated that RE/TiO2(RE=Y, Nd) nanofibres with pure anatase
typed phase and pure rutiletyped phase were obtained by calcination of the relevant composite fibres at 550℃ and 900℃,
respectively, and the lattice parameters of TiO2 were remarkably reduced by the doping rare earth ions. FESEM analysis
revealed that the average diameter of the RE/TiO2(RE=Y, Nd) nanofibres was about 50nm, and their length was greater than 300
μm. Photocatalytic properties of the three nanofibres were investigated by degradation of rhodamine-B and phenol. The
results showed that the degradation rate of 1.5mol%Y/TiO2 nanofibres was higher for rhodamine-B, while the degradation rate
of 1.0mol%Nd/TiO2 nanofibres was higher for phenol. Therefore, the degradation activity of rare earth ions-doped TiO2
nanofibres changed with the different doping rare earth ions and degradation compounds.

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