Novel Microwave - Polyol Process for Nanophase Metals

本研究考察了微波辅助反应在液态下合成Cu、Ni、Pt、Pd、Au、Ag等纳米金属粉末的现象。这种新的微波多元醇工艺用乙二醇还原金属氢氧化物或其他盐类，乙二醇作为溶剂和还原剂。初步结果表明，微波催化可以快速制备纳米相金属粉末。研究了该技术合成纳米相金属粉末的相关动力学，并将结果与常规的195℃乙二醇回流工艺进行了比较。为了更好地了解纳米相金属粉末的成核和生长步骤，在微波-聚脂处理过程中加入了非均相核和均相核。单分散金属粉末有望在导电油墨和浆料中发挥重要作用，可用于各种应用，如电子厚膜技术

0096527KomarneniThis research examines the phenomenon of microwave-assisted reactions in the liquid state to synthesize nanophase metal powders, such as Cu, Ni, Pt, Pd, Au, and Ag. This novel microwave-polyol process reduces metal hydroxides or other salts with ethylene glycol, which serves as a solvent as well as a reducing agent. Preliminary results show that nanophase metal powders can be produced rapidly by microwave catalysis. The synthesis of nanophase metal powders associated kinetics are investigated for this technique, and the results are compared to the conventional refluxing process in ethylene glycol at 195 degrees C. Heterogeneous and homogeneous nuclei are added during microwave-polypol processing to better understand the nucleation and growth steps.%%%Monodisperse metal powders are expected to be valuable in conductive inks and in pastes that could be employed for a variety of applications such as electronic thick film technology.***