Ishikawa Dai, Hayashi Yamato, Takizawa Hirotsugu
Department of Applied Chemistry, University of Tohoku Aoba-yama 6-6-07, Sendai 980-8579, Japan.
J Nanosci Nanotechnol. 2008 Sep;8(9):4482-7.
Pt nanoparticles and Pt/spherical carbon (SC) were prepared in a heterogeneous (PtO2/SC, water/ethanol) solid-liquid system without dispersant using ultrasound and microwave irradiation. The Pt nanoparticles and Pt/SC were characterized using X-ray diffraction (XRD), transmission electron microscopy-energy-dispersive X-ray spectroscopy (TEM-EDX), and dynamic light scattering method for particle size determination. The average size of the Pt nanoparticles prepared by only ultrasound irradiation was smaller than that prepared by microwave irradiation. Pt nanoparticles were successfully prepared by microwave irradiation with a reaction time of several minutes at a specific concentration of diluted ethanol. Pt/SC prepared by combined ultrasound and microwave irradiation resulted in fine particles with good homogeneous distribution.
在不使用分散剂的非均相（PtO₂/球形碳（SC）、水/乙醇）固液体系中，利用超声和微波辐射制备了铂纳米颗粒和铂/球形碳（Pt/SC）。使用X射线衍射（XRD）、透射电子显微镜-能量色散X射线光谱（TEM-EDX）以及动态光散射法对铂纳米颗粒和Pt/SC进行表征以测定粒径。仅通过超声辐射制备的铂纳米颗粒的平均尺寸小于通过微波辐射制备的铂纳米颗粒。在特定浓度的稀释乙醇条件下，通过微波辐射在几分钟的反应时间内成功制备了铂纳米颗粒。通过超声和微波联合辐射制备的Pt/SC得到了具有良好均匀分布的细颗粒。
