Laser-Assisted Synthesis of Colloidal Ni Nanoparticles: Structural  and Morphological Analysis

chemistry Medicinal and pharmaceutical chemistry Nano- and molecular-scale electronics Nano-biomaterials and bioscience Nanomagnetics Nanomaterials, thin films and nanointerfaces Nanomedicine Nanometrology and nanomechanics Nano-optics Nanopatterning, self-assembly and nanofabrication Nanostructures for energy and sensing applications Natural products chemistry Organo main group chemistry Other nanotechnology (unclassified) Other organic chemistry (unclassified) Photochemistry and photovoltaics Physical organic chemistry Supramolecular chemistry We report on the synthesis of Ni/NiO nanoparticles (NPs) using pulsed laser ablation in liquid (PLAL) technique in deionized water (DI). The laser-generated Ni/NiO NPs in DI show a bimodal size distribution. The structural and morphological analysis using microscopic technique reveal the formation of core-shell structure together with the formation of three distinct features of Ni/NiO nanostructures in DI, nanosheet, hollow and chain-like structures. The formation of a nanosheet-like structure in the colloidal NP solution is attributed to the deformation of the cavitation bubble (CB) and the presence of high pressure at the interface between the bubble and the target during the collapse of CB. The observation of hollow NPs is attributed to the Kirkendall effect and nanochain-like structures due to the post-irradiation effect and laser melting during PLAL. The selected area electron diffraction (SAED) pattern analysis reveals the presence of both Ni and NiO phases indicating the synthesized NPs are polycrystalline. Based on the experimental results, the possible growth mechanisms for the formation of different structures and morphology of Ni NP in DI during PLAL are discussed.

PLAL; Ni/NiO NPs; Structural Analysis; Nanosheet; Hollow NPs; Nano-chain | Format: DOCX | Size: 19.0 MB | Download | When a peer-reviewed version of this preprint is available, this information will be updated in the information box above. If no peer-reviewed version is available, please cite this preprint using the following information: Chowdhury, M.; Singh, B. K.; Vadnala, S.; Tiwari, A.; Tripathi, A.; Rawat, R. Beilstein Arch. 2024, 202454. doi:10.3762/bxiv.2024.54.v1 Citation data can be downloaded as file using the "Download" button or used for copy/paste from the text window below. Citation data in RIS format can be imported by all major citation management software, including EndNote, ProCite, RefWorks, and Zotero. © 2024 Chowdhury et al.; licensee Beilstein-Institut. This is an open access work licensed under the terms of the Beilstein-Institut Open Access License Agreement (https://www.beilstein-archives.org/xiv/terms), which is identical to the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0). The reuse of material under this license requires that the author(s), source and license are credited. Third-party material in this work could be subject to other licenses (typically indicated in the credit line), and in this case, users are required to obtain permission from the license holder to reuse the material.