Instituto de Ciencias de los Materiales, Universidad de Valencia, P.O. Box 22085, 46071 Valencia, Spain.
Langmuir. 2010 May 18;26(10):7458-63. doi: 10.1021/la904179x.
Here we describe a simple, powerful technique based on the laser ablation of a target immersed in a water solution of a metal salt. With this method, nanoparticles of different metals and alloys can be processed very quickly. Both the target and the salt solution can be chosen to produce metal nanoparticles of different sizes, surface-oxidized nanoparticles (silica-silver, for example), or even more complex structures to be defined by the researcher on one or more steps because the technique combines the advantages of both physical and chemical methods. We have applied this technique to the fabrication of inert silica-metal (silver, gold, and silver-gold) nanoparticles with a strong surface plasmon resonance all together in a single step. The advantage of the simultaneous production of silica during laser ablation is the stabilization of the metal nanoparticle colloid but also the possibility to reduce the toxicity of these nanoparticles.
在这里，我们描述了一种基于激光烧蚀浸入金属盐溶液中的目标的简单、强大的技术。通过这种方法，可以非常快速地处理不同金属和合金的纳米颗粒。既可以选择目标，也可以选择盐溶液，以产生不同尺寸的金属纳米颗粒、表面氧化的纳米颗粒（例如，二氧化硅-银），甚至更复杂的结构，由研究人员在一个或多个步骤中定义，因为该技术结合了物理和化学方法的优势。我们已经将该技术应用于惰性二氧化硅-金属（银、金和金银）纳米颗粒的制造，这些纳米颗粒在单个步骤中具有强烈的表面等离子体共振。激光烧蚀过程中同时产生二氧化硅的优点是可以稳定金属纳米颗粒胶体，同时还可以降低这些纳米颗粒的毒性。
