可控形貌和尺寸的BaSiF_6纳米颗粒的水热制备  

Size,Shape-Controlled Synthesis of BaSiF_6 Nano-Materials in a Hydrothermal Process

作　　者：桑蓉栎[1] 崔志敏[1] 马雪刚[1] 张庆军[1] 刘丽妹[2] 

机构地区：[1]河北理工大学分析测试中心,唐山063009 [2]河北理工大学信息学院,唐山063009

出　　处：《南开大学学报（自然科学版）》2009年第3期1-3,7,共4页Acta Scientiarum Naturalium Universitatis Nankaiensis

基　　金：国家自然科学基金(60576040);唐山科技攻关项目(06132401A)

摘　　要：在低温水热条件下利用十六烷基三甲基溴化铵(CTAB)和柠檬酸(CA)共作用制备了形貌尺寸可控的BaSiF6纳米颗粒,利用XRD、TEM、SEM测试技术对样品的结构与形貌进行了表征。结果表明,随着R(CA与Ba^(2+)的摩尔比)值增大,颗粒长径比减小,说明CA作为螯合剂限制其径向生长;同时,CTAB的引入可以使样品尺寸控制在纳米尺度内。最后,对CA和CTAB共作用于纳米BaSiF_6的生长机理进行了初步探讨。Different sizes and shapes of BaSiF6 were synthesized by a low temperature hydrothermal method using citric acid as a chelating agent and CTAB as a surfactant. The as-synthesized BaSiF6＇s properties were studied using X-ray diffraction （XRD）, SEM, TEM. The results showed that the sizes and morphologies of the BaSiF6 could be altered by controlled the molar radio of CA to Ba^2＋. And the CTAB could help to fabricate nanoscale crystals. Finally, the mechanism for CA and CTAB coactive hydrothermal synthesis of the BaSiF6 is discussed.

关 键 词：BaSiF6 水热法 CA CTAB 形貌 尺寸可控 

分 类 号：TB34[一般工业技术—材料科学与工程]