Abstract
•Liquid Phase – Pulsed Laser Ablation (LP-PLA) was applied for carbon nanostructures fabrication.•LP-PLA was applied at a higher frequency than previously presented for CNP fabrication.•Higher energy densities resulted in nanoparticles with smaller sizes (42 to 75nm).•Onion like carbon was produced for specific laser processing settings.•CNPs below 200nm and MWCNT above 200nm were produced.
Carbon nanostructures in various forms and sizes, and with different speciation properties have been prepared from graphite by Liquid Phase – Pulsed Laser Ablation (LP-PLA) using a high frequency Nd:YAG laser. High energy densities and pulse repetition frequencies of up to 10kHz were used in this ablation process to produce carbon nanomaterials with unique chemical structures. Dynamic Light Scattering (DLS), micro-Raman and High-Resolution Transmission Electron Microscopy (HRTEM) were used to confirm the size distribution, morphology, chemical bonding, and crystallinity of these nanostructures. This article demonstrates how the fabrication process affects measured characteristics of the produced carbon nanomaterials. The obtained particle properties have potential use for various applications including biochemical speciation applications.