以Bi(NO3)3·5H2O、板状钛酸(H1.07Ti1.73O4·nH2O)、NaOH为原料,采用水热法合成了具有钙钛矿结构的Na0.5Bi0.5TiO3纳米纤维.利用X射线衍射仪(XRD)、场发射扫描电镜(FESEM)、透射电镜(TEM)和X射线能谱仪(EDS)对产物进行表征.通过考察在200℃下水热反应不同时间的产物的相结构、微观形貌及化学组成,对Na0.5Bi0.5TiO3纳米纤维的形成机理进行了探讨.结果表明:钛酸H1.07Ti1.73O4·nH2O是一类具有层板结构的化合物,在水热反应过程中,板状钛酸的层间H3O+可与Na+、Bi3+进行离子交换,通过原位生长的方式形成了板状Na0.5Bi0.5TiO3颗粒,随着水热反应的进行,板状Na0.5Bi0.5TiO3颗粒裂解形成纳米纤维.所得的Na0.5Bi0.5TiO3纳米纤维分散性好,具有钙钛矿结构,直径为30~150 nm,长度为几个微米到十几个微米.
参考文献
[1] | Urban J J,Yun W S,Gu Q,et al.Synthesis of single-crystalline perovskite nanorods composed of barium titanate and strontium titanate.J.Am.Chem.Soc.,2002,124(7):1186-1187. |
[2] | Tybcll T,Ahn C H,Triscone J M.Ferroelectricity in thin perovskite films.Appl.Phys.Lett.,1999,75(6):856-858. |
[3] | Duan X F,Huang Y,Cui Y,et al.Indium phosphide nanowires as building blocks for nanoscale elcctronic and optoelectronic devices.Nature,2001.409(4):66,69. |
[4] | Huang Y,Duan X F,Cui Y,et al.Logic gates and computation from assembled nanowire building blocks.Science,2001,294 (9):1313-1317. |
[5] | Gudiksen M S,Lauhon L J,Wang J,et al.Growth of nanowire superlathce structures for nanoscale photonics and electronics.Nature,2002,415(7):617-620. |
[6] | Li Y M,Chen W,Xu Q,et al.Dielectric and piezoclectric proper ties of lead-free Bi0.5Na0.5TiO3-NaNbO3ceramics.Mater Sci.Eng.B,2004,112(1):5-9. |
[7] | Gao F,Zhang C S,Liu X C,et al.Microstructure and piezoelectric properties of textured (Na0.84K0.16)0.5Bi0.5TiO3 lead-free ceramics.J.Eur:Ceram.Soc.,2007,27(12):3453-3458. |
[8] | Wang Y, Wang Z, Xu H, et al. Properties of (1-x)Bi0.5Na0.5TiO3-xSrTiO3 fcrroelectric thin films prepared by metalorganic solution deposition.J.Alloys Compd.,2009,484(1/2):230-232. |
[9] | Zhou J,Peng W W,Zhang D,et al.Polarization properties of Na0.5Bi0.5TiO3 system:first-principles calculation and experiment.Comput.Mater.Sci.,2008,44(1):67-71. |
[10] | [101王婷,杜慧玲,史翔(WANG Timg,et al).La3+掺杂钛酸铋钠基无铅陶瓷的压电性能与介电弛豫行为.硅酸盐学报(Journal of the Chinese Ceramic Society),2009,37(6):916-921. |
[11] | 杜旻,袁颖,张树人,等(DU Min,et al).钛酸铋钠掺杂对BaTiO3-Nb2O5-ZnO系统介电性能的影响.无机材料学报(Journal of Inorganic Materials),2008,23(2):267-270. |
[12] | Kim C Y,Sekino T,Niihara K.Synthesis of bismuth sodium titanate nanosized powders by solution/Sol-Gel process.J.Am.Ceram.Soc.,2003,86(9):1464-1467. |
[13] | Jing X,Li Y,Yin Q.Hydrothermal synthesis of Na0.5Bi0.5TiO3 fine powders.Mater.Sci.Eng.B,2003,99(1/2/3):506-510. |
[14] | 郭华,王秀峰,朱孔军.固相法和水热法制备BNT无铅压电陶瓷及其性能表征.陕西科技大学学报(自然科学版),2009,27(4):31-34. |
[15] | Liu Y,Lu Y,Dai S.Hydrothermal synthesis of monoisized Na0.5Bi0.5TiO3 spherical particles under low alkaline solution concentration.J.Alloys Compd.,2009,484(1/2):801-805. |
[16] | Liu J B,Wang H,Hou Y D,et al.Low-temperature preparation of Bi0.5Na0.5TiO3 nanowhiskers by a Sol-Gel-hydrothermal method.Nanotechnology,2004,15(3):777-780. |
[17] | Lu T,Dai J,Tian J,et al.Synthesis of Bi0.5Na0.5TiO3 powders through hydrothennal method.J.Alloys.Compd.,2010,490(1/2):232-235. |
[18] | Feng Q,Hirasawa M,Yanagisawa K.Synthesis of crystalaxis-orented BaTiO3 and anatase platelike particles by a hydrothermal soft chemical process.Chem.Mater.,2001,13(2):290-296. |
[19] | Sasaki T,Watanabe M.Osmotic swelling to exfoliation.Exceptionally high degrees of hydration of a layered titanate.J.Am.Chem.Soc.,1998,120(19):4682-4689. |
[20] | Xue L H,Kajiyoshi K,Yan Y W.Preparation of highly oriented titania nanosheet thin films.by electrophorefic deposition.Thin Solid Films,2009,518(1):10-15. |
[21] | Xue L H,Yan Y W.Controlling the morphology of nanostructured barium titanate by hydrothermal method.J.Nanosci.Nanotechnol.,2010,10(2):973-979. |
[22] | Xue L H,Yah Y W.Preparation of oriented barium titanate thin films by combination of electrophoretic deposition with hydrothermal treatment.J.Mater.Sci.Technol.,2010,26(11):996-1000. |
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%