Production of Palladium Nanoparticles by Pulsed Laser Ablation in Water and Their Characterization
Production of Palladium Nanoparticles by Pulsed Laser Ablation in Water and Their Characterization
复制标题
DOI：
10.1021/jp109281q
复制
发表时间：
2011-03-31
影响因子：
3.7
通讯作者：
Muniz-Miranda, M.
中科院分区：
文献类型：
--
作者：
Cristoforetti, G.;Pitzalis, E.;Muniz-Miranda, M.
采用脉冲激光烧蚀法在水溶液中制备了纯钯纳米粒子，并添加和不添加十二烷基硫酸钠作为表面活性剂。这一工作的动机是钯粒子在许多化学反应中的强催化作用。实验参数的影响，如激光能量和光束聚焦以及表面活性剂的浓度，对激光烧蚀过程中，纳米粒子的质量产率，和纳米粒子的性能进行了研究，通过等离子体成像，紫外-可见光谱，透射电子显微镜/能量色散谱（TEM-EDS）分析，和测量的潜力。利用纳米粒子的表面增强拉曼散射活性监测其在催化过程中在金属表面的吸附能力。
Nanosized particles of pure palladium were produced by pulsed laser ablation in aqueous solution, with and without the addition of sodium dodecyl sulfate as the surfactant agent. The work was motivated by the strong catalytic effect of Pd particles in many chemical reactions. The influence of experimental parameters, such as laser energy and beam focusing as well as surfactant concentration, on the laser ablation process, nanoparticle mass yield, and nanoparticle properties was investigated via plasma imaging, UV-visible spectroscopy, transmission electron microscopy/energy dispersive spectroscopy (TEM-EDS) analysis, and measurement of potential. The surface-enhanced Raman scattering activity of nanoparticles was used for the monitoring of their adsorption capability on the metal surface during catalysis processes.