δ-Bi2O3 nanoparticles obtained by laser ablation of solids in liquids

Morales-Ramos, Cesar B.; Camacho-López, Miguel A.; Flores-Castañeda, Mariela; Camacho‐López, Santiago

doi:10.1016/j.matlet.2021.131415

Cited by 5 publications

(1 citation statement)

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“…In our research group, we recently reported the preparation of δ-Bi 2 O 3 nanoparticles by using the reactive laser ablation of solids in liquids technique [22]. This is an easy and fast method for synthesizing δ-Bi 2 O 3 nanoparticles by using a bismuth target and the NaClO solution (12%) as the liquid medium.…”

Section: Introductionmentioning

confidence: 99%

Study of the oxidation process of bismuth nanoparticles using NaClO

et al. 2023

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Bismuth nanoparticles (NPs) colloids synthesized in deionized water by laser ablation of solids in liquids technique (LASL) were oxidized using NaClO solutions at different concentrations. Oxidized nanomaterials were characterized using several techniques. The crystalline phases of the bismuth compound were determined using Raman microspectroscopy, and the crystallographic structure was identified by X-ray diffraction (XRD). The size and morphology of the obtained nanomaterials were studied by transmission electron microscopy (TEM). The chemical states were determined using X-ray Photoelectron Spectroscopy (XPS), and the optical properties of the colloids were characterized by UV-Vis spectroscopy. The absorption spectra were analyzed using the Tauc method to determine the band gaps of the obtained nanomaterials. Our results showed morphological changes, starting from small nanoparticles to nanosheets and a mixture of nanosheets with hollow nanoparticles. Three kinds of nanomaterials were found depending on the NaClO solution concentration: Bi2O2CO3, δ-Bi2O3, or a mixture of both. Some samples were tested as photocatalysts and showed good performance in the degradation of methylene blue in solution. To the best of our knowledge, this is the first study on the oxidation process of bismuth colloidal nanoparticles at room temperature.

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Section: Introductionmentioning

confidence: 99%