绒球状铂纳米颗粒的控制合成  

Controlled Synthesis of Platinum Spheres

作　　者：李甘[1] 黄涛[2] 

机构地区：[1]湖北工程学院新技术学院,湖北孝感432000 [2]中南民族大学催化材料科学湖北省暨国家民委-教育部重点实验室,湖北武汉430074

出　　处：《湖北工程学院学报》2014年第6期87-90,共4页Journal of Hubei Engineering University

基　　金：国家自然科学基金资助项目(20673146)

摘　　要：以氯铂酸(H2PtCl6)为前驱体,聚乙烯吡咯烷酮(PVP)和碘化钾(KI)为形貌控制剂,甲胺作为还原剂,DMF作为溶剂,采用溶剂热法制备出形貌规则、大小均匀的绒球状自组装铂纳米颗粒。分析了碘化钾(KI)、甲胺、反应温度、反应时间对产物形貌的影响。通过XPS(X-射线光电子能谱)、XRD(X-射线粉末衍射)、TEM(透射电子显微镜)等对产物进行有关表征,结果表明,将0.5mL H2PtCl6的DMF溶液(0.04mol·L-1),9.5mL DMF,0.0320g KI,0.2000g PVP,0.1mL甲胺水溶液(40%)进行混合,从室温开始升温到160℃之后继续反应10.5h,能得到绒球状铂纳米颗粒。Uniform and well-defined sphere-like platinum nanoparticles were synthesized by means of asolvothermal method with Hexachloroplatinic acid （IV） （H2PtC16） as a precursor, polyvinylpyrroli-done （PVP） and Potassium iodide （KI） as morphology--controlled agen, methylamine （CH3CH2） asreducing agent, and DMF as solvent. The effects of KI,methylamine,temperature,reaction time, andthe molar ratio on the shapes of the products were investigated. The as-prepared platinum nanoparti-cles were characterized by transmission electron microscopy （TEM）, X-ray photoelectron spectrosco-py （XPS）, and X-ray powder diffraction （XRD）. The experimental results showed that after the mix-ture of 0.5 mL H2PtC16 solution of DMF（0.04 mol· L -1）, 9.5 mL DMF, 0. 0320 g KI, 0. 2000 g PVPand 0.1 mL CH3NH2 （40%）, the room temperature increased to 160 ℃ while the reaction system con-tinued for 10.5 h, the platinum spheres could be obtained.

关 键 词：铂 绒球 溶剂热法 氯铂酸 甲胺 

分 类 号：O614[理学—无机化学]