采用沉淀法生长了不同粒径且性能良好的氧化锌纳米晶体,探讨了晶粒尺寸与煅烧温度的变化关系,研究了ZnO纳米晶体的生长机理.通过实验验证了在中间产物Zn(OH)2中加入NH4HCO3后,ZnO纳米晶体实现了局域生长,很好地阻碍了晶核的过度生长,从而使生成的ZnO纳米晶体保持很小的粒径.煅烧温度较低时,ZnO纳米晶体的生长模式为正常扩散生长,煅烧温度在800℃时,发生了竞争生长现象.
参考文献
| [1] | Kayanuma Y .Quantum-size effects of interacting electrons and holes in semiconductor microcystals with spherical shape[J].Physical Review B,1988,38(15):9797-9805. |
| [2] | Y Wang;N Herron .Nanometer-sized semiconductor clusters:materials synthesis,quantum size effects,and photophysical properties[J].Journal of Physical Chemistry,1991,95(02):525-532. |
| [3] | Moonsub Shim;Philippe Guyot-Sionest .Organic -Capped ZnO Nanocrystals: Synthesis and n-Type Character[J].Journal of the American Chemical Society,2001(47):11651-11654. |
| [4] | Monticone S;Tufeu R;Kanaev A V .Complex nature of the visible fluorescence of colloidal ZnO nanoparticles[J].Journal of Physical Chemistry B,1998,102(16):2854-2862. |
| [5] | Jing LQ.;Xu ZL.;Shang J.;Sun XJ.;Cai WM.;Guo HC. .The preparation and characterization of ZnO ultrafine particles[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2002(1/2):356-361. |
| [6] | Lin Guo;Shihe Yang;Chunlei Yang .Highly monodisperse polymer-capped ZnO nanoparticles: Preparation and optical properties[J].Applied physics letters,2000(20):2901-2903. |
| [7] | 祖庸;刘超锋;李晓娥.超细氧化锌的合成与技术进展[J].化工新型材料,1997(08):11-14. |
| [8] | Zhang SC.;Li XG. .Preparation of ZnO particles by precipitation transformation method and its inherent formation mechanisms[J].Colloids and Surfaces, A. Physicochemical and Engineering Aspects,2003(1/3):35-44. |
| [9] | Lin Guo;Shihe Yang;Chunlei Yang;Ping Yu;Weikun Ge;George K.L.Wog .Synthesis and Characterization of Poly(vinylpyrrolidone)-Modified Zinc Oxide Nanoparticles[J].Chemistry of Materials,2000(8):2268-2274. |
| [10] | 祖庸,李晓娥,樊安,刘超峰.沉淀法制备纳米氧化锌的研究[J].西北大学学报(自然科学版),2001(03):232-234. |
| [11] | 陈传志,周祚万.前驱物尺寸和形貌对纳米ZnO的影响[J].西南交通大学学报,2004(04):557-560. |
| [12] | Liu L C;Risbud S H .Quantun-dot size-distribution analysis and precipitation stages in semiconductor doped glasses[J].Journal of Applied Physiology,1990,68(01):28-32. |
| [13] | 王引书,孙萍,丁硕,罗旭辉,李娜,王若桢.玻璃中CdSeS纳米晶体的生长及其性能[J].物理学报,2002(12):2892-2895. |
| [14] | Wong E M;Bonevich J E;Searson P C .Growth kinetics of nanoctystalline ZnO particles from colloidal suspensions[J].Journal of Physical Chemistry B,1998,102(40):7770-7775. |
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%