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Article Abstract
Titanium dioxide@gold (TiO@Au) nanocomposite monolayers with enhanced visible-light photocatalysis were synthesized an air-water interfacial self-assembly and pyrolysis strategy. This method simultaneously embeds Au nanoparticles (5-20 nm) within TiO and reduces the bandgap from 3.02 eV to 2.66 eV interfacial charge redistribution. In a 200 ml aqueous reaction system, the TiO@Au monolayers demonstrated a visible-light-driven methylene blue degradation rate of 0.0054 min-3.6-fold higher than pure TiO, attributed to Au's localized surface plasmon resonance (LSPR) enhancing visible-light absorption and interfacial electron transfer. The system maintained 99.2% activity retention over five cycles, showcasing unprecedented stability in large-volume wastewater treatment scenarios. This method leverages self-limiting assembly at the air-water interface to orchestrate the molecular packing of organometallic precursor films, which upon pyrolysis yield centimeter-scale nanocomposite monolayers. The developed methodology provides a practical pathway for industrial photocatalytic wastewater purification.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC12046311 | PMC |
| http://dx.doi.org/10.1039/d5ra02143j | DOI Listing |
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