Can a simple modification unlock enhanced photocatalytic activity? This research unveils a novel method for synthesizing platinum-modified rod-like titania mesocrystals, achieving remarkable results in photocatalysis. These mesocrystals, assembled from crystallographically oriented nanocrystals, were created using a cost-effective and environmentally conscious solvothermal technique, avoiding surfactants and templates. The core of the study focuses on characterizing the synthesized photocatalysts using advanced methods such as transmission electron microscopy (TEM), scanning electron microscopy (SEM), and X-ray photoelectron spectroscopy (XPS), confirming their unique nanorod-like structure, exceptional crystallinity, and desirable surface properties. While pristine titania struggles with hydrogen evolution, the platinum modification drastically elevates activity, resulting in impressive reaction rates. Beyond hydrogen evolution, the titania mesocrystals demonstrate potent oxidation capabilities under simulated solar light, effectively degrading tetracycline antibiotics, as validated by experimental data and density functional theory (DFT) calculations. This advancement holds significant promise for solar energy conversion and environmental purification, paving the way for more efficient photocatalysts with diverse applications in water treatment and beyond.
Published in Catalysts, this study aligns with the journal's focus on innovative catalytic materials and processes. The research contributes to the development of efficient photocatalysts for environmental applications, a prominent theme in the journal. By exploring the platinum modification of titania mesocrystals, the paper builds upon existing knowledge and offers a promising avenue for enhancing photocatalytic activity, crucial for addressing contemporary energy and environmental challenges.