复合光催化剂CoFe2O4/BiVO4/电气石的超声-光催化研究

doi:10.11896/cldb.21090095

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Abstract CoFe₂O₄/BiVO₄/tourmaline composite photocatalysts were grown in situ by hydrothermal method with tourmaline as carrier. The materials were characterized by XRD, SEM, EDS and UV-Vis DRS. The acousto-optic catalytic performance of the samples was evaluated by degrading brilliant green. The results showed that under visible light in 60 min, the degradation rate of brilliant green by BiVO₄ was 33.5%, the degradation rate of brilliant green by CoFe₂O₄ (10wt%)/BiVO₄(45wt%)/tourmaline was 74%; Under visible light+ultrasound for 60 min, the degradation rate of brilliant green by BiVO₄ was 61.5%, and the degradation rate of brilliant green by CoFe₂O₄ (10wt%)/BiVO₄ (45wt%)/tourmaline acousto-optic (within 12 min) was as high as 99.2%. The efficient degradation rate may be related to the heterojunction of the composite structure. CoFe₂O₄/BiVO₄/tourmaline improves the absorption capacity of visible light, promotes the separation of photogenerated electrons and holes, and effectively enhances the photodegradation performance. In addition, from the effect of ultrasound+photocatalysis, it can be seen that ultrasound cooperates with photocatalysis. The application of acoustooptic catalysis in the degradation of organic pollutants is becoming an important research direction. If we can combine the advantages of each other, it is expected to develop efficient and practical catalytic materials.

Key words： composite photocatalyst ultrasound-photocatalysis CoFe₂O₄/BiVO₄/tourmaline

Published: Online: 2023-03-27

CLC number:

O643

Fund:Beijing Top Young Talents Project from Beijing Municipal Education Commission (CIT&TCD201904012).

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	ZHANG Jinzhi
	XIE Liang

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ZHANG Jinzhi,XIE Liang. Study on the Ultrasonic Photocatalytic Behavior of Composite Photocatalyst CoFe₂O₄/BiVO₄/Tourmaline[J]. Materials Reports, 2023, 37(6): 21090095-6.

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http://www.mater-rep.com/EN/10.11896/cldb.21090095 OR http://www.mater-rep.com/EN/Y2023/V37/I6/21090095

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