ZnS纳米陶瓷微球的制备  

Effect of High Gravity Field on Synthesis of ZnS Polycrystalline Microspheres

作　　者：方璐[1] 姚如富[1] 薛燕[1] 

机构地区：[1]合肥师范学院化学与化学工程学院,安徽合肥230601

出　　处：《安庆师范学院学报（自然科学版）》2015年第3期75-81,共7页Journal of Anqing Teachers College(Natural Science Edition)

基　　金：安徽省教育厅自然科学研究重点项目(KJ2014A201);安徽省教育厅一般教学研究项目(2014jyxm279);合肥师范学院校级质量工程项目(JX201412)

摘　　要：以Zn Cl2和Na2S2O3为前驱物在二氯苯/水溶液界面上,在超重力为1 000/g的条件下水热合成了高密度的Zn S纳米陶瓷微球,研究了前驱物浓度、温度和超重力大小对Zn S纳米陶瓷微球性能的影响。采用FE-SEM,TEM,XRD,FT-IR,UV-Vis和BET对样品的形貌、微结构、物相和性能进行表征。结果发现,Zn S纳米陶瓷微球是由尺寸为2-20 nm的Zn S晶粒组成的直径为300-500 nm的微球,其密度与施加的超重力大小有关。随着超重力的增大,晶粒粒度减小,制得的Zn S纳米陶瓷微球的密度就增大。在120℃,1 000/g超重力的条件下,在二氯苯/水溶液界面上反应30min制备得到的Zn S纳米陶瓷微球具有高分散性和较高的密度。High densified ZnS polycrystaUine mierospheres have been successfully synthesized by the hydrothennal method with high gravity field using ZnCl2 and Na2S2O3 as precursors in the aqueous solution - chlorobenzene system. The effect of precursor concentration, temperature and the relative centrifugal field on the property of ZnS microspheres is investigated. The products are characterized by field-emission scanning electron microscopy （FE-SEM）, Transmission electron microscopy （TEM）, powder X-ray diffraction （XRD）, UV-Vis, IR spectra and BET. It is found that the as-prepared products are the spherical ZnS particles with the diameter of 300-500nm, which is self-assembled by the crystallites with the size of 2-20nm. The density of the microsphere is relevant with the relative centrifugal field. The smaller the size of ZnS crystallites is, the bigger the density of the formed ZnS particles is. High densified ZnS polycrystalline micrespheres have been successfully synthesized by the hydrothermal method with gravity field of 1000/g at 120℃ for 30 rain in the aqueous solution chlorobenzene system.

关 键 词：水热法 超重力 纳米材料 ZNS 

分 类 号：O611[理学—无机化学]