通过使用离子交换法和水热法,简单制备了一系列不同含量的Co~(2+)和Ni~(2+)共掺杂锐钛矿型TiO_2纳米带.使用X射线衍射(XRD)、扫描电镜(SEM)、透射电镜(TEM)、X射线光电子能谱(XPS)、傅里叶红外(FTIR)和振动样品磁强计(VSM)等各种测试技术对这些样品进行了表征.结果表明,Co~(2+)和Ni~(2+)皆掺入TiO_2晶格中,没有发现任何钴或镍金属簇或金属纳米粒子存在,也未发现有它们的氧化物第二相存在.磁性测试结果证实,所有掺杂样品皆有室温铁磁性,但所表现的磁性行为很复杂,同时具有铁磁性和顺磁性.
A series of Co and Ni co-doped anatase TiO_2 nanobelts were simply prepared combining ion-exchange with hydrothermal treatment. They were characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared (FT-IR), and magnetic measurement techniques. The results show that after Co~(2+) and Ni~(2+) cations co-doped into TiO_2 lattice structure, any metallic cobalt or nickel clusters or nanoparticles could not be found. The magnetic result demonstrates that the prepared Co-doped TiO_2 samples are room temperature ferromagnetic materials, whereas their magnetic behavior is very complicated; they have paramagnetism besides ferromagnetism.
参考文献
| [1] | Matsumoto Y;Murakami M;Shono T et al.[J].Science,2001,291:854. |
| [2] | 沈毅,任富建,刘红娟.掺杂TiO2的光催化性能研究[J].稀有金属材料与工程,2006(11):1841-1844. |
| [3] | Zhang H;Ji T H;Liu Y et al.[J].Journal of Physical Chemistry C,2008,112:8604. |
| [4] | Zhang H;Ji T H;Li L L et al.[J].Acta Physico-Chimica Sinics,2008,24(04):601. |
| [5] | Ji T H;Jian W B;Fang J Y .[J].Journal of the American Chemical Society,2003,125:8448. |
| [6] | Jian W B;Fang J Y;Ji T H et al.[J].Applied Physics Letters,2003,83:3377. |
| [7] | 唐茂玉,嵇天浩,刘冠娆,谢健,常怀秋,王钦,杨青林.SrTiO3微纳米线的制备与亲疏水性[J].稀有金属材料与工程,2007(z2):254-256. |
| [8] | Chuang T J;Brundle C R;Rice D W .[J].Surface Science,1976,59:413. |
| [9] | Nakamura R.;Imanishi A.;Murakoshi K.;Nakato Y. .In situ FTIR studies of primary intermediates of photocatalytic reactions on nanocrystalline TiO2 films in contact with aqueous solutions[J].Journal of the American Chemical Society,2003(24):7443-7450. |
| [10] | Wang J;Zhang QW;Yin S;Sato T;Saito F .Raman spectroscopic analysis of sulphur-doped TiO2 by co-grinding with TiS2[J].The journal of physics and chemistry of solids,2007(2):189-192. |
| [11] | Manivannana A;Seehra M S;Majumder S B et al.[J].Applied Physics Letters,2003,83:111. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%