Molten salt synthesis of SrBi4-xLaxTi4O15 (X = 0.05, 0.10, 0.15, and 0.20) for Rhodamine-B degradation

Haikal, Fikri and Prasetyo, Anton ORCID: https://orcid.org/0000-0003-1575-8634 (2023) Molten salt synthesis of SrBi4-xLaxTi4O15 (X = 0.05, 0.10, 0.15, and 0.20) for Rhodamine-B degradation. Presented at Engineering Physics International Conference 2021, 24-25 Aug 2021, Yogyakarta.

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Abstract

Four layered member Aurivillius compound SrBi4T i4O15 has been reported for its potential as a photocatalyst despite its weakness, such as the high recombination rate of electron-hole pair. Doped with rare earth elements such as lanthanum could solve the weakness. In this research, SrBi4-xLaxT i4O15 (x = 0.05, 0.10, 0.15, and 0.20) were synthesized using molten salt flux Na2SO4/K2SO4 and evaluated the photocatalytic activity in rhodamine-B degradation. The diffractogram sample indicates that target materials were successfully obtained, alt hough SrTiO3 phase impurities were formed. The SrBi4-xLayxT i4O15 (x = 0.05, 0.10, 0.15, and 0.20) particles exhibit plate-like morphologies with agglomerates. Band-gap energy was calculated using the Kubelka-Munk equation from the UV-Vis DRS spectrum, and we obtained that its band-gap energy ranges from 3.02-2.97 eV. Sample containing the highest Lanthanum content ( x=0.20) exhibit the best rhodamine-b degradation with 26.27% degraded after 60 minutes reaction under UV-light irradiation.

Item Type:	Conference (Paper)
Keywords:	La doped SrBi4Ti4O15; Photocatalyst; Rhodamine B
Subjects:	03 CHEMICAL SCIENCES > 0302 Inorganic Chemistry > 030206 Solid State Chemistry 03 CHEMICAL SCIENCES > 0306 Physical Chemistry (incl. Structural) > 030601 Catalysis and Mechanisms of Reactions
Divisions:	Faculty of Mathematics and Sciences > Department of Chemistry
Depositing User:	Dr Anton Prasetyo
Date Deposited:	30 May 2023 15:12

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