摘要
以无水氯化锌,硫代乙酰胺为原料,采用声化学法在低温成功制备了六方纤锌矿相硫化锌(α-ZnS)纳米晶,并对其反应机理作了初步探讨。采用X射线粉末衍射(XRD),示差扫描量热分析(DSC),透射电子显微镜(TEM)以及选区电子衍射分析(SAED)对所制得的纳米粉末进行了表征。结果表明:所制备ZnS为六方纤锌矿结构,粒子尺寸大约在20～30nm。合成ZnS纳米粒子的形貌接近于球形,选区电子衍射图中三个衍射环分别对应于α-ZnS的(002)、(110)和(112)晶面。在超声辐射下,反应溶液体系首先生成具有六方结构的碱式氯化锌(Zn5(OH)8Cl2.H2O),为α-ZnS纳米粒子的生长提供了很好的模板。
Wurtzite zinc sulfide （α-ZnS） nanocrystallites were synthesized successfully by a sonochemical process using zinc chloride and thiacetamide as raw materials. The as-prepared ZnS nanocrystallites were characterized using X-ray diffraction （XRD）, differential scanning calorimetry （DSC）, transmission electron microscopy（TEM） and selected area eletron diffraction （SAED）. Results show that the asprepared ZnS nanocrystallites are in hexagonal structure with sphere morphologies and the particle size is about 20-30 nm. The three diffraction rings in the SAED image could be identified corresponding to the crystall face of （002）, （110） and （112） of α-ZnS, respectively. Researching on the reaction mechanism indicates that under the ultrasonic irradiation, simonkolleite （ Zn5 （ OH ）8Cl2·H2O ） is generated firstly in the reaction system, which is in a hexagonal structure, and it provides a good template for the growth of α-ZnS nanoparticles.
出处
《硅酸盐通报》
CAS
CSCD
北大核心
2009年第5期1033-1037,共5页
Bulletin of the Chinese Ceramic Society
基金
教育部新世纪优秀人才支持计划(NCET-06-0893)
陕西科技大学研究生创新基金资助项目
