The improved Photocatalytic Performance of Strontium Titanate (STO) Powder Induced by Lanthanum Dopants

Iriani, Yofentina; Puspita, Novia; Sandi, Dianisa; Nurosyid, Fahru; Suryana, Risa; Fasquelle, Didier

doi:10.22068/ijmse.3645

Volume 21, Issue 4 (December 2024) IJMSE 2024, 21(4): 69-78 | Back to browse issues page

‎ 10.22068/ijmse.3645

Mendeley

Zotero

RefWorks

Iriani Y, Puspita N, Sandi D, Nurosyid F, Suryana R, Fasquelle D. The improved Photocatalytic Performance of Strontium Titanate (STO) Powder Induced by Lanthanum Dopants. IJMSE 2024; 21 (4) :69-78
URL: http://ijmse.iust.ac.ir/article-1-3645-en.html

The improved Photocatalytic Performance of Strontium Titanate (STO) Powder Induced by Lanthanum Dopants

Yofentina Iriani

Abstract: (2296 Views)

In this research, Lanthanum (La)-doped Strontium Titanate (STO) with the formula of Sr_1-xLa_xT_iO₃ (LSTO; x=0, 0.03, 0.05, and 0.07) powders have been successfully fabricated by co-precipitation route. The impacts of La³⁺on the structural, microstructure, band-gap, and photocatalytic activity for the degradation of organic pollutants, in this case, methylene blue, under UV exposure, were reported in detail. The formation of undoped and La-doped STO samples with cubic perovskite structures was confirmed by X-ray Diffraction (XRD) results. The presence of La doping affected the microstructure morphology by producing LSTO powders with a larger specific surface area. Besides, the UV absorption of the LSTO powders was enhanced due to the narrowed band gap caused by La³⁺ dopants. Accordingly, an improvement in photocatalytic activity applied for the photodegradation of methylene blue solution was exhibited by the LSTO samples.

Keywords: lanthanum-doped strontium titanate, photocatalyst, photodegradation, methylene blue