Synthesis and Characterization of Hercynite Nanoparticles by Pulsed Laser Ablation in Liquid Technique

Abstract

Hercynite nanoparticles were obtained by pulsed laser ablation of hercynite in liquid media technique. Colloidal solutions of hercynite nanoparticles were synthesized in three different liquids by ablation using 532‐nm output of a pulsed Nd:YAG laser with three laser fluencies. Transmission electron microscopy, selected area electron diffraction, energy‐dispersive X‐ray analysis, and X‐ray photoelectron spectroscopy were used for the characterization of these nanoparticles. The nanoparticles obtained were of spherical shapes with cubic crystalline structure. It was observed that the laser fluence and liquid media could affect the morphology and size of hercynite nanoparticles.

Al-Doped magnetite encapsulated in mesoporous carbon: a long-lasting Fenton catalyst for CWPO of phenol in a fixed-bed reactor under mild conditions

“…Deconvoluted spectra of Al2p core exhibit peaks at binding energies 74.5 and 75.1 eV correspond to the Al 3+ in the hercynite nanoparticle as reported in the literature (Fig. 7d) 55 . Broader Fe2p3/2 peak of spent catalyst-Fe(Fe0.68Al0.32)2O4 shown in Fig.…”

“…It is attributed to the fingerprint of the electronic structure of γ-Fe2O3 whereas, in the case of Fe3O4 shakeup satellite peak does not appear 54 . On deconvolution, broad Fe2p3/2 peak resolved into two peaks at binding energy 710.3 eV assigned to Fe 2+ in FeAl2O4 55 and 712.5 eV ascribed to Fe 3+ in γ-Fe2O3 (Fig. 7c) 56 .…”

Synthesis and Properties of Platinum Nanoparticles by Pulsed Laser Ablation in Liquid

“…For 5 minutes of ablation at lower fluence (9 J/cm 2 ), Pt NPs obtained in all these media showed nearly the same average size (2 ± 1 nm), but there was an increase in average size with increase in fluence for all the three liquid media. Increase in energy fluence could result in increase in average size of nanoparticles as reported in many cases [12,16,19,20]. The effects of ablation time (at constant energy fluence of 25 J/cm 2 ) were different in these liquids.…”

“…We reported synthesis of metal, semiconductor, and ceramic nanoparticles using pulsed laser ablation in liquid technique in which the shape, size, structure, composition, and optical properties were analyzed [12][13][14][15][16][17][18]. In this paper, we report the effects of liquid medium (acetone, ethanol, and methanol), ablation energy fluence, and ablation time on morphology, size, structure, composition, and optical properties of platinum nanoparticles produced by PLAL technique.…”

Effect of SiO₂ addition on the synthesis of hercynite with high purity

“…Chen et al also pointed out that the content of carbon should be restrictedly controlled to prevent such impurities as Fe 2 O 3 and Fe 3 O 4 in the sample. Castillo Rodriguez et al 17) obtained hercynite nanoparticles by pulsed laser ablation in liquid technique. However this method was not suitable for industrialization of hercynite because of its expensive cost.…”