Bismuth selenide nanoparticles: simple synthesis, characterization, and its light harvesting applications in the presence of novel precursor

摘要

Bismuth selenide, Bi_2Se_3, nanoparticles were synthesized by a new precursor complex, [bis(salicy-late)bismuth(Ⅱ)]; [Bi_2(Hsal)_3], via a sonochemical method in an aqueous solution. The average diameter of the Bi_2Se_3 nanoparticles was 25 nm. The efficiency of the Bi_2Se_3 nanoparticles as a photocatalyst for the decolorization of rhodamine-B and methylene blue using ultraviolet light irradiation has been evaluated. Furthermore, a preliminary study on the possibility of developing a solar cell having the FTO/TiO_2/Bi_2Se_3/Pt-FTO structure was also investigated to produce an inexpensive solar cell by Bi_2Se_3 nanoparticles. Products were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, photoluminescence, and EDX analysis.