Photocatalytic Activity of Bismuth Titanate Nanostructures

Bismuth titanate nanostructures, particularly layered perovskite phases such as Bi4Ti3O12 and related compositions, have emerged as versatile photocatalysts owing to their robust chemical stability, intrinsic ferroelectric polarisation and suitable band gaps for visible-light absorption. Their anisotropic crystal structures promote internal electric fields that facilitate separation of photogenerated electron–hole pairs, enhancing photocatalytic efficiency. Morphological engineering—ranging from nanosheets and platelets to polyhedral microstructures—enables tuning of surface area, light harvesting and active site exposure. Coupling with co-catalysts, noble-metal nanoparticles or conductive carbon materials further refines charge transfer pathways and extends spectral response. These advances underpin applications in solar-driven hydrogen production, degradation of organic pollutants, reduction of heavy metals and antimicrobial treatments, reflecting their global significance for renewable energy and environmental remediation.

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Photocatalytic Activity of Bismuth Titanate Nanostructures publication trend

The graph below shows the total number of articles in photocatalytic activity of bismuth titanate nanostructures across all publications each year (not limited to Nature Index journals).

Technical terms

Photocatalysis: Acceleration of a chemical reaction by a semiconductor that, upon light absorption, generates electron–hole pairs capable of driving redox processes.

Band gap: Energy separation between the valence and conduction bands of a semiconductor, dictating the wavelengths of light it can absorb.

Heterojunction: Interface between two materials with different band structures, designed to promote spatial separation of charge carriers.

Ferroelectric polarisation: Spontaneous electric dipole alignment in certain crystals, creating internal fields that assist in charge separation.

Surface plasmon resonance: Collective oscillation of conduction electrons at a metal–semiconductor interface induced by incident light, amplifying the local electromagnetic field and boosting photocatalytic activity.

References

1. High-Performance Photocatalytic Multifunctional Material Based on Bi4Ti3O12-Supported Ag and Ti3C2Tx for Organic Degradation and Antibacterial Applications. Biosensors (2024).
2. Study of g-C3N4/BTO composite photocatalyst with ferroelectric polarization under ultrasound. Digest Journal of Nanomaterials and Biostructures (2023).
3. Enhanced Photocatalytic Removal of Hexavalent Chromium over Bi12TiO20/RGO Polyhedral Microstructure Photocatalysts. Nanomaterials (2022).