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利用KrF准分子激光烧蚀法进行铂纳米粒子的水基合成

The Water-Based Synthesis of Platinum Nanoparticles Using KrF Excimer Laser Ablation.

作者信息

Lazar Oana Andreea, Moise Călin Constantin, Nikolov Anastas Savov, Enache Laura-Bianca, Mihai Geanina Valentina, Enachescu Marius

机构信息

Center for Surface Science and Nanotechnology, University Politehnica of Bucharest, 060042 Bucharest, Romania.

S.C. NanoPRO START MC S.R.L., Mitropolit Antim Ivireanu Street 40, 110310 Pitesti, Romania.

出版信息

Nanomaterials (Basel). 2022 Jan 22;12(3):348. doi: 10.3390/nano12030348.

DOI:10.3390/nano12030348
PMID:35159693
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8840002/
Abstract

Our work presents, for the first time, a comprehensive study of the synthesis of fully metallic platinum nanoparticles (Pt-NPs) involving the ablation process in double distilled water using a KrF excimer laser. To obtain detailed information on Pt-NP morphology and optical properties, prepared colloids were characterized using High Resolution Scanning Transmission Electron Microscopy (HR-STEM) with advanced capabilities for Energy Dispersive X-ray Analysis (EDX), UV/Vis optical spectroscopy, and Direct Analysis in Real Time-Mass Spectrometry (DART-MS). The influence of the applied laser fluence and laser repetition rate (RR) values on the characteristics of the obtained Pt-NPs and the ablation process, respectively, were also analyzed. Spherical and spherical-like nanoparticles exhibiting aggregation were produced. The Pt-NP mean size values were between 2.2 ± 1.2 nm and 4.0 ± 1.0 nm, while their interplanar distance measurements showed a face-centered cubic (FFC) Pt lattice (111), as revealed by HR-STEM measurements, for all investigated samples. The smallest mean size of 2.2 nm of the Pt-NPs was obtained using a 2.3 J cm laser fluence at a 10 Hz RR, and the narrowest size distribution of the NPs was obtained with a 2.3 J cm laser fluence at a 40 Hz RR. A linear dependence of the Pt-NP diameters versus the laser repetition rate was found at a constant fluence of 2.3 J cm. The proposed eco-friendly synthesis route of Pt-NPs, because of its relative simplicity, has the potential for use in industrial production.

摘要

我们的工作首次展示了一项关于完全金属化铂纳米颗粒（Pt-NPs）合成的全面研究，该研究涉及在双蒸水中使用KrF准分子激光的烧蚀过程。为了获得有关Pt-NP形态和光学性质的详细信息，使用具有先进能量色散X射线分析（EDX）功能的高分辨率扫描透射电子显微镜（HR-STEM）、紫外/可见光谱以及实时直接分析质谱（DART-MS）对制备的胶体进行了表征。还分别分析了所施加的激光能量密度和激光重复率（RR）值对所得Pt-NPs特性和烧蚀过程的影响。产生了呈现聚集状态的球形和类球形纳米颗粒。通过HR-STEM测量发现，所有研究样品的Pt-NP平均尺寸值在2.2±1.2纳米至4.0±1.0纳米之间，而它们的晶面间距测量显示为面心立方（FCC）Pt晶格（111）。在10Hz的RR下使用2.3J/cm²的激光能量密度获得了最小平均尺寸为2.2nm的Pt-NPs，在40Hz的RR下使用2.3J/cm²的激光能量密度获得了最窄的NP尺寸分布。在2.3J/cm²的恒定能量密度下发现Pt-NP直径与激光重复率呈线性关系。所提出的Pt-NPs的环保合成路线由于其相对简单，具有用于工业生产的潜力。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ddab/8840002/9a675ebd3645/nanomaterials-12-00348-g011.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ddab/8840002/22b9d56a64ac/nanomaterials-12-00348-g007.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/ddab/8840002/9a675ebd3645/nanomaterials-12-00348-g011.jpg

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