【摘要】 提出脉冲激光轰击浸于流动液相中铁靶的新方法,连续制备得到纳米铁乙醇溶胶并采用TEM,FT IR,UV vis对其进行表征.透射电镜发现其粒径分布在 10～ 30nm,傅立叶红外光谱发现乙醇分子基团振动波长受纳米铁颗粒的影响,可见-紫外光谱的分析结果表明其在 2 37 82nm,2 72 93nm,30 8 43nm处附近有吸收.通过UV vis及TEM研究了添加十二烷醇聚氧乙烯醚(OP 10 )对纳米铁溶胶的分散稳定性的影响.结果表明,加入 0 10 %的十二烷醇聚氧乙烯醚对纳米铁颗粒的分散起到很好的稳定作用更多还原

【Abstract】 A novel method for successive preparation of nano metal sols by pulsed laser ablation at the interface of solid and flowing-liquid is developed and nano-iron/ethanol sol is obtained by this method. TEM results show that the iron particles’ sizes are mostly between 10～30 nm. It is found through FT-IR that the vibration of ethanol molecule groups in the sol is affected by the nano-iron particles. The UV-vis results show that there are one strong absorption peak at 237.82 nm and two medium absorption peaks at 272.93 nm and 308.43 nm. The effect of polyoxyethylene (10) lauryl ether (OP-10) on the disperse stability of nano-iron/ethanol sol is studied by UV-vis and TEM. The results show that the best addition of OP-10 is 0.10% and it can effectively stabilize the dispersity of the nano-iron/ethanol sol.更多还原