NANOCOMPOSITE LỚP MỎNG Bi2WO6@GRAPHEN OXIT: ĐẶC TRƯNG TÍNH CHẤT ĐỘC ĐÁO CỦA VẬT LIỆU

Tóm tắt

In the present paper, the Bi2WO6@(0-5)%GO thin layer hybrid nanocomposites were successfully
synthesized by ultrasonic-assisted hydrothermal technology and showed to have unique characteristic
properties. The FT–IR spectra confirmed the presence of characteristic group vibrations of GO and
asymmetric stretching vibrations of Bi2WO6@(0-5)%GO particle. The Raman scattering spectrum clearly
displayed two typical peaks D and G of GO, with an increase in the degree of defects and disorder in the
structure. The characteristic Eg, B1g and A1g group vibration modes of Bi2WO6 were also clearly observed,
accompanied by peak position shifts in the Bi2WO6@5%GO nanocomposite. The X-ray diffraction pattern
confirmed the formation of the crystal structure of Bi2WO6@(0-5)%GO composites and a slight increase in
the average crystal size when hybridized with GO. The SEM and TEM images showed that GO was in the
form of thin-layered nanospheres, while Bi2WO6@(0-5)%GO nanocomposites were irregularly
agglomerated in the form of square-shaped thin layers, with a grain size smaller than 60 nm. The chemical
composition, high purity and uniform distribution of O, Bi, W, C elements in the Bi2WO6@(0-5)%GO were
confirmed by EDS measurements. The Bi2WO6@5%GO material had a fairly large surface area, including
medium and microporous pores, close to type III adsorption isotherm. The thin layer Bi2WO6@(0-5)%GO
nanomaterials had good and unique properties, and would continue to be applied to explore and effectively
treat difficult-to-decompose organic substances that pollute water sources.