Effect of electric field on the properties of bismuth oxide nanoparticles prepared by laser ablation in water

In this work, preparation and characterization of alpha-Bi2O3 by pulsed laser ablation in water under effect of electric field is presented. UV-visible measurements showed that a red shift in the absorption spectra of Bi2O3 nanoparticles (NPs) was observed when the electric field increased. Applying electric field during laser ablation of Bi2O3 led to increasing the particle size. The morphological investigation, carried out using atomic force microscope, showed that the root mean square roughness and the grain sizes of Bi2O3 NPs are increase after applied of the electric field. Energy dispersive X-ray investigations confirm the complete oxidation of ablated bismuth after applying of electric field. X-ray diffraction patterns revealed that the structure of Bi2O3 remained polycrystalline with small diffraction intensity around (102) plane after applying of electric field.