Synthesis of Gold Nanoparticles from Aqueous Solutions of Hydrochloroauric Acid under Multipulse Femtosecond Irradiation

IF 1.1 4区物理与天体物理 Q3 PHYSICS, MULTIDISCIPLINARY Physics of Wave Phenomena Pub Date : 2022-03-17 DOI:10.3103/S1541308X22010046

K. K. Ashikkalieva, V. V. Kononenko, A. L. Vasil’ev, E. V. Akhlyustina, V. M. Gololobov, N. R. Arutyunyan, A. M. Romshin, V. I. Konov

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引用次数: 1

Abstract

The main modes of synthesis of gold nanoparticles in aqueous solutions of hydrochloroauric acid under multipulse (3 × 10⁶) femtosecond laser irradiation have been studied. UV–Vis spectroscopy, dynamic light scattering, and transmission electron microscopy (TEM) showed that there are two types of nanoparticles dominating in the investigated range of laser-pulse energies W = 1.6–200 µJ: ultrasmall (~1–5 nm) and plasmonic (~5–50 nm) nanoparticles. The particle size is found to be determined by two threshold pulse energies. The first corresponds to the development of avalanche water ionization, which initiates reduction of [AuCl₄]^– ions to neutral atoms, formation of nuclei for nanoparticles, and their subsequent growth. The second threshold is determined by the avalanche-plasma heating, which leads to an explosive rise in the liquid temperature with overheating, melting, and fragmentation of previously formed gold nanoparticles.

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多脉冲飞秒辐射下氢氯金酸水溶液合成纳米金的研究

研究了多脉冲(3 × 106)飞秒激光在氢氯金酸水溶液中合成金纳米粒子的主要模式。紫外可见光谱、动态光散射和透射电子显微镜(TEM)研究表明，在激光脉冲能量W = 1.6 ~ 200µJ范围内，主要存在两种类型的纳米颗粒:超小(~1 ~5 nm)和等离子体(~5 ~ 50 nm)纳米颗粒。发现颗粒大小由两个阈值脉冲能量决定。第一个与雪崩水电离的发展相对应，它启动了[AuCl4] -离子还原为中性原子，形成纳米粒子的核，以及它们随后的生长。第二个阈值是由雪崩等离子体加热决定的，它导致液体温度的爆炸性上升，导致先前形成的金纳米颗粒过热、熔化和破碎。

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来源期刊

Physics of Wave Phenomena PHYSICS, MULTIDISCIPLINARY-

CiteScore

2.50

自引率

21.40%

发文量

审稿时长

>12 weeks

期刊介绍： Physics of Wave Phenomena publishes original contributions in general and nonlinear wave theory, original experimental results in optics, acoustics and radiophysics. The fields of physics represented in this journal include nonlinear optics, acoustics, and radiophysics; nonlinear effects of any nature including nonlinear dynamics and chaos; phase transitions including light- and sound-induced; laser physics; optical and other spectroscopies; new instruments, methods, and measurements of wave and oscillatory processes; remote sensing of waves in natural media; wave interactions in biophysics, econophysics and other cross-disciplinary areas.