酒石酸对直接沉淀法制备纳米Bi_2O_3晶体结构的影响  

Effect of Tartaric Acid on Crystal Type of Bismuth Oxide Nano-particles Prepared by Direct Precipitation Method

作　　者：刘芳芳[1] 戴亚堂[1] 张欢[1] 赵文[1] 

机构地区：[1]西南科技大学材料科学与工程学院,四川绵阳621010

出　　处：《中国粉体技术》2011年第5期32-34,共3页China Powder Science and Technology

基　　金：国家高技术研究计划(863计划)项目;编号:2008AAxxx0310

摘　　要：以高氯酸铋和氢氧化钠为原料,采用一步直接沉淀法,通过添加和控制酒石酸的用量,制备出纺锤形的纳米氧化铋粒子,采用X射线衍射、扫描电镜和差热分析等手段对产品进行分析与表征,并且对反应机理进行初步分析。结果表明:当酒石酸盐的质量分数为8%左右时,合成的纳米氧化铋为纺锤形,粒子分布均匀,粒度较小,平均粒度约为90 nm。Using Bi（ClO3）3 and NaOH as raw materials, adding and con- trolling the concentration of tartaric acid, the spindle bismuth oxide nano-partieles were synthesized by direct precipitation method. The particles characterized by X ray diffraction （XRD）, scan electron microscopy （ SEM ） and thermogravimetry--differential scanning calorimetry （ TG-DSC）. The reaction mechanism of bismuth oxide nano-particles was discussed. The results showed that the as-prepared bismuth oxide nano-particles had uniform size distribution and smaller granularity, when the mass fraction of tartaric acid was 8%, the mean particle size was about 90 nm.

关 键 词：酒石酸 纳米氧化铋 直接沉淀法 

分 类 号：TF123.7[冶金工程—粉末冶金]