Subhan Abdul, Mourad Abdel-Hamid Ismail, Al-Douri Yarub
Mechanical and Aerospace Engineering Department, United Arab Emirates University, Al-Ain P.O. Box 15551, United Arab Emirates.
National Water and Energy Center, United Arab Emirates University, Al-Ain P.O. Box 15551, United Arab Emirates.
Nanomaterials (Basel). 2022 Jun 22;12(13):2144. doi: 10.3390/nano12132144.
Pulsed laser ablation in liquid, used for nanoparticle synthesis from solid bulk metal targets (a top-down approach), has been a hot topic of research in the past few decades. It is a highly efficient and 'green' fabrication method for producing pure, stable, non-toxic (ligand-free), colloidal nanoparticles, which is often challenging using traditional chemical methods. Due to the short time scale interaction between the laser pulses and the target, it is difficult to achieve complete control on the physical characteristics of metallic nanoparticles. Laser process parameters, liquid environment, and external fields vastly effect the shape and structure of nanoparticles for targeted applications. Past reviews on pulsed laser ablation have focused extensively on synthesising different materials using this technique but little attention has been given to explaining the dependency aspect of the process parameters in fine-tuning the nanoparticle characteristics. In this study, we reviewed the state of the art literature available on this technique, which can help the scientific community develop a comprehensive understanding with special insights into the laser ablation mechanism. We further examined the importance of these process parameters in improving the ablation rate and productivity and analysed the morphology, size distribution, and structure of the obtained nanoparticles. Finally, the challenges faced in nanoparticle research and prospects are presented.
用于从块状固体金属靶材合成纳米颗粒（一种自上而下的方法）的液相脉冲激光烧蚀，在过去几十年里一直是研究的热点。它是一种生产纯净、稳定、无毒（无配体）胶体纳米颗粒的高效且“绿色”的制备方法，而使用传统化学方法往往具有挑战性。由于激光脉冲与靶材之间的相互作用时间尺度很短，因此难以完全控制金属纳米颗粒的物理特性。激光工艺参数、液体环境和外部场对用于特定应用的纳米颗粒的形状和结构有很大影响。过去关于脉冲激光烧蚀的综述广泛关注使用该技术合成不同材料，但很少关注解释工艺参数在微调纳米颗粒特性方面的依赖性。在本研究中，我们回顾了关于该技术的现有前沿文献，这有助于科学界形成全面的理解，并对激光烧蚀机制有特别的见解。我们进一步研究了这些工艺参数在提高烧蚀速率和生产率方面的重要性，并分析了所得纳米颗粒的形态、尺寸分布和结构。最后，介绍了纳米颗粒研究面临的挑战和前景。
