采用水热法和后继热处理法制备二氧化钛(TiO_2)纳米带, 然后通过液相合成法在纳米带表面组装了氧化锌(ZnO)纳米结构, 制备了ZnO@TiO_2纳米带表面异质结构. 利用X射线衍射(XRD)、扫描电镜(SEM)、透射电镜(TEM)等手段对异质结构进行了表征. 所制得的产物是TiO_2的纳米带表面组装了ZnO纳米花: TiO_2纳米带的宽度为50～200 nm, 长度达到几十微米, 而ZnO异质结呈花状, 长为500 nm的骨苞上长有200 nm左右的花瓣. 本文还讨论了ZnO@TiO_2表面异质结构的形成机制.
On the basis of the TiO_2 nanobelts made via hydrothermal method and post heat-treatment, zinc oxide@ titanium dioxide nanobelts of heterostructure were successfully synthesized through the liquid phase method. The nanobelts were characterized by different techniques, such as X-ray powder diffractometer (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The products were ZnO nanoflowers self-assembled on the surface of titanium dioxide nanobelts. The nanobelts were 50～200 nm in width and several tens micrometers in length, while the ZnO of heterostructure was a bud with 500 nm in length had the petals of about 200 nm. The formation mechanisms of ZnO@TiO_2 nanobelts heterostructure mentioned above were also discussed briefly.
参考文献
| [1] | Dai Y.;Zhang Y.;Li QK.;Nan CW. .Synthesis and optical properties of tetrapod-like zinc oxide nanorods[J].Chemical Physics Letters,2002(1/2):83-86. |
| [2] | Allen A;Sunden E;Cannon A;Graham S King W .Nanomaterial transfer using hot embossing for flexible electronic devices[J].Applied Physics Letters,2006,88:083112. |
| [3] | Cao M H;Liu T F;Gao S;Sun G B Wu X L Hu C W Wang Z L .Single-crystal dendritic micro-pines of magnetic α-Fe_2O_3:large-scale synthesis,formation mechanism,and properties[J].Angewandte Chemie International Edition,2005,44:4197. |
| [4] | Xia Y N;Yang P D;Sun Y G;Wu Y Y Mayers B Gates B Yan Y Q .One-dimensional nanostructures:synthesis,characterization,and applications[J].Advanced Materials,2003,15:353. |
| [5] | Cui Y;Wei Q;Park H;Lieber C M .Nanowire nanosensors for highly sensitive and selective detection of biological and chemical species[J].Science,2001,293:1289. |
| [6] | 王武育,王溪晶,杨太礼.TiO2薄膜的光电性能及应用[J].稀有金属,2008(06):781-788. |
| [7] | Chen D;Zhang H;Hu S;Li J H .Preparation and enhanced photoelectrochemical performance of coupled bicomponent ZnO-TiO_2 nanocomposites[J].Journal of Physical Chemistry C,2008,112:117. |
| [8] | Greene L E;Law M;Yuhas B D;Yang P D .ZnO-TiO_2 core-shell nanorod/P3HT solar cells[J].Journal of Physical Chemistry C,2007,111:18451. |
| [9] | Mane R S;Lee W J;Pathan H M;Han S H .Nanocrystalline TiO_2/ZnO thin films:fabrication and application to dye-sensitized solar cells[J].Journal of Physical Chemistry B,2005,109:24254. |
| [10] | Law M;Greene L E;Radenovic A;Kuykendall T Liphardt J Yang P D .ZnO-Al_2O_3 and ZnO-TiO_2 core-shell nanowire dye-sensitized solar cells[J].Journal of Physical Chemistry B,2006,110:22652. |
| [11] | Irimpan L;Krishnan B;Nampoori VPN;Radhakrishnan P .Luminescence tuning and enhanced nonlinear optical properties of nanocomposites of ZnO-TiO2[J].Journal of Colloid and Interface Science,2008(1/2):99-104. |
| [12] | Barreca D;Comini E;Ferrucci A P;Gasparotto A Maccato C Maragno C Sberveglieri G Tondello E .First example of ZnO-TiO_2 nanocomposites by chemical vapor deposition:structure,morphology,composition,and gas sensing performances[J].Chemistry of Materials,2007,19:5642. |
| [13] | Wang YM;Du GJ;Liu H;Liu D;Qin SB;Wang N;Hu CG;Tao XT;Jiao J;Wang JY .Nanostructured sheets of Ti-O nanobelts for gas sensing and antibacterial applications[J].Advanced functional materials,2008(7):1131-1137. |
| [14] | Wang J;Cao J M;Fang B Q;Lu P Deng S G Wang H Y .Synthesis and characterization of multipod,flower-like,and shuttle-like ZnO frameworks in ionic liquids[J].Materials Letters,2005,59:1405. |
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