超声波喷雾微波辅助热解一步法制备SnO_2粉体  

Production of SnO_2 Powders by Ultrasonic Spray and Microwave Pyrolysis

作　　者：李鑫培 周朝金[1,2,3] 郭胜惠 张利华[1,2,3] 杨兴卫 LI Xinpei ZHOU Chaojin GUO Shenghui ZHANG Lihua YANG Xingwei(Yunnan Provincial Key Laboratory of Intensification Metallurgy, Kunming 650093, China National Local Joint Laboratory of Engineering Application of Microwave Energy and Equipment Technology, Kunming 650093, China Key Laboratory of Unconventional Metallurgy co -sponsored by Yunnan Province and Ministry of Education, Kunming 650093, China)

机构地区：[1]昆明理工大学云南省特种冶金重点实验室,云南昆明650093 [2]昆明理工大学微波能工程应用及装备技术国家地方联合工程实验室,云南昆明650093 [3]昆明理工大学非常规冶金省部共建教育部重点实验室,云南昆明650093

出　　处：《昆明理工大学学报（自然科学版）》2017年第5期9-16,共8页Journal of Kunming University of Science and Technology(Natural Science)

基　　金：国家自然科学基金资助项目(51264015)

摘　　要：以SnCl_2·2H_2O为原料、水为溶剂溶解作为前驱体溶液,采用超声波喷雾联合微波热解制备SnO_2粉体.研究了不同微波热解温度和前驱体浓度和添加滤网对SnO_2产品的微观形貌的影响,利用TG-DSC、XRD、SEM、EDS、TEM对样品的结构特征和微观形貌进行了表征分析.结果表明:前驱液浓度、温度和添加滤网是影响氧化锡(SnO_2)粉体形貌的关键因素.得到粒径较小、分散性好和形貌呈球形的超细粉体的最佳条件为:温度500~600℃,载气速率0.5 L/min,前驱体原溶液为0.02 mol/L,滤网加入200目.The SnO2 powders were made by techniques of ultrasonic spray and microwave pyrolysis, the mix- ture of SnCl2 · 2H2O and water used as precursor solution. The effects of microwave pyrolysis temperatures, concentrations of precursor and the strainer on the morphology and microstructure of SnO2 powders were investi- gated. The structure characteristics and morphology of SnO2 powders were characterized by the techniques of TG - DSC, EDS, XRD, SEM and TEM. The results show that concentration and temperature of precursor and strainer are key factors affecting the morphology of SnO2 powders. The optimization conditions for producing spherical morphology ultrafine SnO2 powders with smaller particle size, good dispersibility are as follows： the temperature of 500 ℃; rate of carrier gas of 0. 5L/min; the concentration of precursor of 0.02mol/L and the strainer of 200 mesh.

关 键 词：超声波 喷雾热解法 SnO2超细粉体 微波 

分 类 号：V256[一般工业技术—材料科学与工程] TM925.54[航空宇航科学与技术—航空宇航制造工程]