铝纳米粒子的液相化学还原法制备与表征

分别以聚乙二醇(PEG)、聚乙二醇二甲醚(NHD)作为分散稳定剂,均三甲苯作溶剂,通过氢化铝锂还原氯化铝,用液相化学还原法制备铝纳米粒子(AlNPs)。采用激光粒度分析(LPSA)、透射电镜(TEM)、X射线能谱(EDS)、X射线衍射(XRD)、傅里叶红外光谱(FT-IR)、热重(TG)研究了AlNPs的粒度、形貌、尺寸、成分、结构特点及活性等。结果表明:PEG作分散稳定剂制备的PEG/AlNPs平均粒径可达67.7 nm,但分散性较差;当NHD与AlNPs的质量比为1.11时,制得的NHD/AlNPs平均粒径为23.4 nm;AlNPs属立方晶系,表面包覆有分散稳定剂。

Solution Phase Chemical Reduction Synthesis and Characterization of Aluminum Nanoparticles

Alumnium nanoparticles(AlNPs) were synthesized via reduction of aluminium chloride anhydrous by lithium aluminium hydride with the solution-phase chemical reduction method, using polyethylene glycol(PEG) or polyethylene glycol dimethyl ether(NHD) as a dispersion stabilizer and mesitylene as solvent.The granularity, distribution, morphology, size, component, structure and activity of AlNPs were studied by laser particle size analyzer(LPSA), transmission electron microscopy(TEM), X-ray photoelectron spectroscopy(EDS), X-ray diffraction(XRD), Fourier transform infrared spectrum(FT-IR) and thermogravimetry(TG), respectively.Results show that the average particle size of PEG/AlNPs prepared by PEG as a dispersion stabilizer is 67.7 nm.The average particle size of NHD/AlNPs prepared by NHD/AlNPs=1.1/1(mass ratio) is 23.4 nm.AlNPs belong to cubic crystal system, and their surface are coated with dispersion stabilizer.