以Zn(NO_3)_2·6H_2O和聚乙二醇(PEG,Mn=2000)为原料,采用微波水热法制备出了结晶性能良好的ZnO微球.利用XRD、EDS、SEM、TEM对样品进行了表征,并系统研究了微波水热过程中辐照时间、水热温度、表面活性剂和超声处理等因素对产物形貌和结构的影响.实验表明,ZnO微球是由很多直径约300nm,长1μm的ZnO棒自组装而成,微球直径约为2μm,自组装结构的形成可能与PEG模板的导向作用有关.延长微波辐照时间,ZnO微球的直径有所增加,微球结构的完整性受微波水热温度影响较大.
Fine crystallized ZnO and its self-assembled microspheres were synthesized by microwave hydrothermal method using Zn(NO_3)_2·6H_2O and PEG2000 as raw materials.The as-prepared samples were studied by XRD,EDS,SEM,and TEM.The influence factors (such as reaction time,temperature,surfactant and ultrosonic treatment) on the features and structures of samples were studied systematically.The results showed that the average diameter and length of ZnO rods were about 300nm and 1μm,whereas the diameter of self-assembled microspheres was about 2μm.The growth process of self-assembled microspheres was possibly associated with the directing effect of PEG template.The irradation time had little impact on the crystal formation of samples,by increasing reaction time the diameter of ZnO microspheres could be enhanced.The integrality of the self-assembled microspheres relied a lot on the reaction temperature.
参考文献
| [1] | Jih-Jen Wu;Sai-Chang Liu .Low-Temperature Growth of Well-Aligned ZnO Nanorods by Chemical Vapor Deposition[J].Advanced Materials,2002(3):215-218. |
| [2] | Belaidi, A.;Dittrich, Th;Kieven, D.;Tornow, J.;Schwarzburg, K.;Kunst, M.;Allsop, N.;Lux-Steiner, M. -Ch.;Gavrilov, S. .ZnO-nanorod arrays for solar cells with extremely thin sulfidic absorber[J].Solar Energy Materials and Solar Cells: An International Journal Devoted to Photovoltaic, Photothermal, and Photochemical Solar Energy Conversion,2009(6/7):1033-1036. |
| [3] | Joo J;Lee D;Yoo M et al.[J].Sensors and Actuators B:Chemical,2009,138(02):485-490. |
| [4] | Purica M;Budianu E;Rusu E .[J].Microelectronic Engineering,2000,51:425-431. |
| [5] | Lin, SS;Lu, JG;Ye, ZZ;He, HP;Gu, XQ;Chen, LX;Huang, JY;Zhao, BH .p-type behavior in Na-doped ZnO films and ZnO homojunction light-emitting diodes[J].Solid State Communications,2008(1/2):25-28. |
| [6] | P.G. Li;X. Wang;W.H. Tang .Facile Route To Well-aligned Zno Nanowire Arrays[J].Materials Letters,2009(8):718-720. |
| [7] | Wang Z L .[J].Advanced Materials,2003,15(05):432-436. |
| [8] | Hongxia Zhang;Jing Feng;Jun Wang .Preparation of ZnO nanorods through wet chemical method[J].Materials Letters,2007(30):5202-5205. |
| [9] | Duan J X;Huang X T;Wang E K .[J].Materials Letters,2006,60(15):1918-1921. |
| [10] | Xingfu Zhou;Shuyi Chen;Danyu Zhang;Xuefeng Guo;Weiping Ding .Microsphere Organization of Nanorods Directed by PEG Linear Polymer[J].Langmuir: The ACS Journal of Surfaces and Colloids,2006(4):1383-1387. |
| [11] | Wang Y;Li M .[J].Materials Letters,2006,60(02):266-269. |
| [12] | X.H. Wang;S. Liu;Y. Tang;P. Chang .Synthesis of sulfur-doped ZnO nanowires by electrochemical deposition[J].Materials science in semiconductor processing,2007(6):241-245. |
| [13] | Park J H;Choi Y J;Park J G .[J].Journal of Crystal Growth,2005,280(1-2):161-167. |
| [14] | Cheng HB;Cheng JP;Zhang YJ;Wang QM .Large-scale fabrication of ZnO micro-and nano-structures by microwave thermal evaporation deposition[J].Journal of Crystal Growth,2007(1):34-40. |
| [15] | Hu HM;Huang XH;Deng CH;Chen XY;Qian YT .Hydrothermal synthesis of ZnO nanowires and nanobelts on a large scale[J].Materials Chemistry and Physics,2007(1):58-62. |
| [16] | 邓崇海,胡寒梅,韩成良,邵国泉.微波法合成氧化锌纳米棒[J].合成化学,2008(03):292-294. |
| [17] | Cho S;Shim D S;Jung S H et al.[J].Materials Letters,2009,63(9-10):739-741. |
| [18] | 王百齐,夏春辉,富强,王朋伟,单旭东,俞大鹏.Co掺杂ZnO纳米棒的水热法制备及其光致发光性能[J].物理化学学报,2008(07):1165-1168. |
| [19] | 景晓燕,匡巍巍,刘婧媛.微波水热法一步合成微米氧化锌粒子[J].功能材料,2008(07):1186-1188. |
| [20] | Zhou X F;Zhang D Y;Zhu Y et al.[J].Journal of Physical Chemistry B,2006,110(51):25734-25739. |
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