Flower-Like SrTiO3/BiVO4 Heterojunction Nanocomposite Photocatalyst for Effective Degradation of Tetracycline

Flower-like SrTiO 3 was prepared by hydrothermal method and BiVO 4 was prepared by sol–gel method, and then the two materials were fully mixed under the condition of calcination at 500°C for 2 h. The samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and UV–Vis...

Full description

Saved in:
Bibliographic Details
Published in:Russian Journal of Physical Chemistry A 2022-12, Vol.96 (13), p.3038-3044
Main Authors: Xiao, Xinglan, Zhao, Yingna, Liu, Tao, Zhang, Jianchao, Wang, Jiansheng
Format: Article
Language:English
Subjects:
Bismuth oxides
Chemistry
Chemistry and Materials Science
Electrochemical impedance spectroscopy
Flowers
Heterojunctions
Nanocomposites
Nanoparticles
Photocatalysis
Photocatalysts
Photochemistry and Magnetochemistry
Physical Chemistry
Sol-gel processes
Spectrum analysis
Strontium titanates
Vanadates
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Flower-like SrTiO 3 was prepared by hydrothermal method and BiVO 4 was prepared by sol–gel method, and then the two materials were fully mixed under the condition of calcination at 500°C for 2 h. The samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and UV–Vis diffuse reflectance spectroscopy (DRS) and electrochemical impedance spectroscopy (EIS). The results showed that the BiVO 4 nanoparticles were embedded on the flower-like SrTiO 3 , and the heterojunction between BiVO 4 and SrTiO 3 was formed which effectively improved the migration efficiency of photogenerated carriers. The UV–Vis test results indicated that the corresponding range of STO–10 wt % BVO composite photocatalyst changes from 380 to 490 nm, and the photocatalytic efficiency reached 72% by degrading tetracycline hydrochloride (TC) under simulated sunlight. Mechanism analysis shows that the type I heterojunction is successfully built between SrTiO 3 and BiVO 4 , which promotes the migration and separation of photogenerated carriers and reduces the recombination rate of photogenerated electrons and holes.
ISSN:0036-0244
1531-863X
DOI:10.1134/S0036024422130210