This paper presents the synthesis and characteristic properties of ZrO2@GO

nanocomposite doped with Bi3+ ions by simple hydrothermal method with

the support of ultrasonic. The research aims to find new materials for

treating difficult-to-decompose organic pollutants in wastewater. The

characteristics of the vibrational functional groups are indicated by infrared

spectrum, the crystal structure is characterized by X-ray diffraction. The

surface morphology and optical properties of ZrO2@GO nanocomposite

material are characterized by FE-SEM, TEM and BET. The characteristics of

vibrational modes and groups have been studied by Raman scattering

spectrum. The results show that the ZrO2@GO material consists of fairly

uniform microspheres, with a diameter of about 20 - 30 nm, closely linked to

graphene oxide sheets. The ZrO2@GO:Bi3+ nanocomposites have a high

surface area of 87.57 - 211.78 m2g-1, a pore volume of 0.22 - 2.98 cm3g-1 and a

pore diameter of 4.74-8.95 nm. The ZrO2@GO:Bi3+ nanocomposite

materials have unique and outstanding properties, with great potential in

treating wastewater contaminated with toxic organic substances such as

dyes, antibiotics, pesticides and plant protection drugs.

treating wastewater contaminated with toxic organic substances such as

dyes, antibiotics, pesticides and plant protection drugs.

doped ZrO2 nanoparticles had monoclinic and tetragonal phases. The average nanoparticle size of ZrO2 and

Ce-doped ZrO2 is less than 30 nm. The Raman spectra confirmed the characteristic vibrational groups of the

ZrO2 monoclinic and tetragonal phases. The Zr-x%Ce nanoparticles have high purity, with uniform

distribution of Ce in the ZrO2 matrix, a relatively high surface area, average capillary diameter, and small

band gap energy of 2.812-3.062 eV. Based on the outstanding properties of Zr-x%Ce, it can be used as a

sustainable, efficient, economical, and environmentally friendly photocatalyst for the treatment of dyes in

industrial wastewater.