在水热条件下,通过氧化钆的水化来制备具有棒状形貌的氢氧化钆,用X射线衍射(XRD)、扫描电镜(SEM)研究了结晶产物的物相类型和外观形貌,考察了碱的存在与否,以及碱浓度和水热时间对氧化钆水化速度和产物外观形貌的影响.结果表明,氧化钆在水热条件下可以直接与水反应形成氢氧化钆,但速度较慢.添加一定量的氢氧化钠可以促进氧化钆向氢氧化钆的物相转变,所得产物为具有六方相结构的空心短棒.
参考文献
| [1] | Lijima S;Hellical .Microtubules of graphitic carbon[J].Nature,1991,354(6348):56-58. |
| [2] | Seo DS.;Kim H.;Lee JK. .Preparation of nanotube-shaped TiO2 powder[J].Journal of Crystal Growth,2001(1):428-432. |
| [3] | Preparation and structure investigation of nanoparticle-assembled titanium dioxide microtubes[J].Applied physics letters,2003(9):1839-1841. |
| [4] | Chen YF.;Lee CY.;Yeng MY.;Chiu HT. .Preparing titanium oxide with various morphologies[J].Materials Chemistry and Physics,2003(1):39-44. |
| [5] | Zhang YJ.;Liu J.;He RR.;Zhang Q.;Zhang X.;Zhu J. .Synthesis of alumina nanotubes using carbon nanotubes as templates[J].Chemical Physics Letters,2002(5-6):579-584. |
| [6] | Xing Y J;Xi Z H;Xue Z Q et al.Optical properties of ZnO nanotubes synthesized via vapor phase growth[J].Applied Physics Letters,2003,83(09):1689-1691. |
| [7] | Dai R;Cole J L;Stout J D et al.Tin oxide nanowires,nanoribbons and nanotubes[J].Journal of Physical Chemistry B,2002,106:1274-1279. |
| [8] | Chandrappa G T;Steunou N;Cassaignon S et al.Hydrothermal synthesis of vanadium oxide nanotubes from V2O5 gels[J].Catalysis Today,2003,78:85-89. |
| [9] | Yada M;Mihara M;Mouri S et al.Rare earth (Er,Tm,Yb,Lu) oxide nanotubes templated by dodecylsulfate assemblies[J].Advanced Materials,2002,14:309. |
| [10] | Xun Wang;Yadong Li .Synthesis and characterization of lanthanide hydroxide single-crystal nanowires[J].Angewandte Chemie International Edition,2002(24):4790-4793. |
| [11] | Xun Wang;Xiaoming Sun;Dapeng Yu;Bingsuo Zou;Yadong Li .Rare Earth Compound Nanotubes[J].Advanced Materials,2003(17):1442-1445. |
| [12] | Guo C X;Cao M H;Hu C W .Syntyhesis and characterization of Dy(OH)3 and Dy2O3 nanotubes[J].Journal of Nanoscience and Nanotechnology,2005,5(02):184-187. |
| [13] | Xu A W;Fang Y P;You L P et al.A simple method to synthesize By(OH)3 and By2O3 nanotubes[J].Journal of the American Chemical Society,2003,125:1494-1495. |
| [14] | Qun Tang;Zhaoping Liu;Shu Li;Shuyuan Zhang;Xianming Liu;Yitai Qian .Synthesis of yttrium hydroxide and oxide nanotubes[J].Journal of Crystal Growth,2003(1/2):208-214. |
| [15] | Tang Q;Liu Z P;Liu S et al.Preparatiun,characterization and optical properties of terbium oxide nanotubes[J].Journal of Materials Chemistry,2003,13:3103-3106. |
| [16] | Ding Jiawen,Wu Yanli,Sun Weili,Li Yongxiu.Preparation of La(OH)3 and La2O3 with Rod Morphology by Simple Hydration of La2O3[J].稀土学报（英文版）,2006(04):440-442. |
| [17] | Nagao M.;Hamano H.;Hirata K.;Kumashiro R.;Kuroda Y. .Hydration process of rare-earth sesquioxides having different crystal structures[J].Langmuir: The ACS Journal of Surfaces and Colloids,2003(22):9201-9209. |
| [18] | 吴燕利 .低维稀土化合物的合成与性能[D].南昌:南昌大学,2006. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%