硅量子点支撑钯纳米粒子的可控制备  

Controllable Preparation of Palladium Nanoparticles Supported by Silicon Quantum Dots

作　　者：姚娇丽[1] 郭云芳 张佳丽[1] 李忠平[1] 董川[1] 

机构地区：[1]山西大学环境科学研究所,化学化工学院,山西太原030006

出　　处：《分析科学学报》2015年第3期355-358,共4页Journal of Analytical Science

基　　金：国家自然科学基金(No.21205075)

摘　　要：采用微乳法制备烯丙胺修饰的硅量子点(Si QDs),通过紫外-可见吸收光谱、荧光光谱和红外光谱对其光学性能进行了表征,通过透射电镜(TEM)对其形貌进行了表征,测得其荧光量子产率为10.06%,荧光寿命τ1=3.1982ns,τ2=12.4527ns。依据Si QDs的光学性质,制备了Si QDs支撑Pd纳米粒子材料(Si QDs/Pd)。通过量子点的浓度实现了Pd纳米粒子形貌和尺寸的有效控制。结果表明制备的Pd纳米材料具有较好的分散性,在有机催化和能源转化领域具有潜在的应用价值。In this paper,a simple solution-phase synthesis of silicon quantum dots（Si QDs）was described.The property of the Si QDs was characterized by using FT-IR,UV-Vis absorption spectroscopy and fluorescence spectroscopy.The morphology was characterized by TEM.Photoluminescence quantum yield of the Si QDs was 10.06%.The fluorescence lifetime wasτ1=3.1982 ns andτ2=12.4527 ns.The controllable preparation of palladium nanoparticles supported by Si QDs was firstly prepared based on the optical properties of Si QDs.The palladium nanomaterials have potential applications in the fields of organic catalysis and energy conversion.

关 键 词：硅量子点 钯纳米粒子 可控制备 

分 类 号：O657.39[理学—分析化学]