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

doi:10.3724/SP.J.1077.2010.00379

Abstract

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.

Key words: electrospinning, TiO₂ nanofibres, rare earth, rhodamineB, phenol, photocatalysis

CLC Number:

TB34
O614

WANG Jin-Xian,GUO Yue-Qiu,DONG Xiang-Ting,LI Zhi-Guo,LIU Gui-Xia. Preparation and Photocatalytic Activities of Y³⁺ or Nd³⁺doped TiO₂ Nanofibres[J]. Journal of Inorganic Materials, DOI: 10.3724/SP.J.1077.2010.00379.

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

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