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Enhanced photocatalytic degradation of azo dye using rare-earth metal doped TiO2 under visible light irradiation

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Title Enhanced photocatalytic degradation of azo dye using rare-earth metal doped TiO2 under visible light irradiation
 
Creator Anisha, R
Vasam, E K Kirupa
 
Subject Congo red
La doped TiO2
Photocatalytic degradation
Sol-gel method
Visible light
remediation
 
Description 547-553
Lanthanum doped TiO2 nanoparticles (La doped TiO2) have been prepared by a sol-gel process using TiO(C4H9)4 as
raw material and are characterized using XRD, FT-IR, SEM-EDS, TEM and UV-DRS. The insertion of La ion in TiO2
lattice has been confirmed by SEM-EDS and XRD data. TEM studies have confirmed that La ions are uniformly doped over
TiO2 lattice. The band gap level of La doped TiO2 is decreased to 2.92 eV with a red shift due to charge transfer reaction
which is confirmed by UV-DRS. The photocatalytic activities of the synthesized nanoparticles are evaluated for the
degradation of Congo red dye (20 ppm) in an aqueous solution with La doped TiO2 (0.25 g) at pH= 6.3, under solar light
irradiation. The photocatalytic results confirmed that the La doped TiO2 show good photocatalytic activity and can be
considered as a promising photocatalyst for the degradation of organic pollutants in water. Due to the stability of La doped
TiO2 nanoparticles, it could be reused for more than five cycles reaching 100% degradation efficiency.
 
Date 2022-08-31T07:06:04Z
2022-08-31T07:06:04Z
2022-09
 
Type Article
 
Identifier 0975-0991 (Online); 0971-457X (Print)
http://nopr.niscpr.res.in/handle/123456789/60426
https://doi.org/10.56042/ijct.v29i5.62325
 
Language en
 
Publisher NIScPR-CSIR, India
 
Source IJCT Vol.29(5) [September 2022]