Golightly Justin S, Castleman A W
Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, USA.
J Phys Chem B. 2006 Oct 12;110(40):19979-84. doi: 10.1021/jp062123x.
The results of studies of the formation of various titanium-based nanoparticles by laser ablation of a titanium rod in liquid environments comprised of water, ethanol, 2-propanol, and n-hexane are reported. The effect of fluence on nanoparticle characteristics was studied by ablation with a 532 nm Nd:YAG operating at 10 Hz, showing that mean particle size and the size distribution increase with increasing laser intensity. The solvent plays a crucial role in the nature of the nanoparticles, as solvent components are incorporated into the nanoparticles during formation. Titanium nanoparticles formed in oxygen-rich solvents incorporate oxygen, while those formed in a carbon-rich environment are found to contain carbon. The nanoparticles created in their respective liquid environments are very stable, maintain their character over time, and remain in solution for months after creation.
报道了通过在由水、乙醇、2-丙醇和正己烷组成的液体环境中激光烧蚀钛棒来制备各种钛基纳米颗粒的研究结果。通过使用波长为532nm、工作频率为10Hz的Nd:YAG激光进行烧蚀，研究了能量密度对纳米颗粒特性的影响，结果表明平均粒径和粒径分布随激光强度的增加而增大。溶剂在纳米颗粒的性质中起着关键作用，因为在形成过程中溶剂成分会掺入纳米颗粒中。在富氧溶剂中形成的钛纳米颗粒会掺入氧，而在富碳环境中形成的纳米颗粒则含有碳。在各自液体环境中产生的纳米颗粒非常稳定，随时间保持其特性，并且在产生后数月内仍保留在溶液中。
