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Enhanced Visible-Light Photocatalytic Activity of TiO2 via LaFeO3 Perovskite Modification
Perizat Zhanbirbayeva1, Ainur Kayumova1, Nazym Yermek1
1Faculty of Physics and Technology, Karaganda National Research University Named After Academician Ye. A. Buketov, Karaganda 100026, Kazakhstan.
Nanomaterials (Basel, Switzerland)
|July 27, 2026
Summary
This study synthesized titanium dioxide/lanthanum ferrite (TiO2/LaFeO3) nanocomposites for enhanced solar photocatalysis. Optimized LaFeO3 content improved charge separation and pollutant degradation, showing promise for wastewater treatment.
Area of Science:
- Materials Science
- Nanotechnology
- Environmental Chemistry
Background:
- Titanium dioxide (TiO2) is a widely used photocatalyst but suffers from limited visible light absorption.
- Developing efficient nanocomposites is crucial for advancing solar-driven photocatalytic applications.
Purpose of the Study:
- To synthesize and characterize TiO2/LaFeO3 nanocomposites with varying LaFeO3 content.
- To enhance photocatalytic efficiency under solar irradiation for pollutant degradation and solar energy conversion.
Main Methods:
- Synthesis of TiO2/LaFeO3 nanocomposites.
- Characterization using SEM, TEM, HRTEM, XPS, Raman spectroscopy, and BET analysis.
- Photoelectrochemical measurements and electrochemical impedance spectroscopy.
Main Results:
- LaFeO3 incorporation extended TiO2 light absorption into the visible region.
- Formation of a p-n heterojunction between TiO2 and LaFeO3 improved charge carrier separation and reduced resistance.
- The TLFO_2.0 sample showed high photocurrent density (51.85 μA/cm2) and efficient degradation of MB (57.3%), RhB (90%), and CR (33.8%).
Conclusions:
- Optimizing LaFeO3 content in TiO2/LaFeO3 nanocomposites significantly enhances photoelectrochemical and photocatalytic performance.
- These nanocomposites show great potential for wastewater treatment and solar energy conversion applications.
