Nanoparticles such as gold nanospheres, nanorods and nanostars are a promising additive to titanium dioxide (TiO2) to increase photocatalytic efficiency. However, conventional TiO2-nanoparticles drive photocatalytic reaction only by UV light. There is a need for materials with enhanced photocatalytic capacity under visible or infrared light in addition to UV.
Rutgers researchers have developed a solution method to synthesize crystalline TiO2-coated gold nanostars at low-temperature, with the preservation of the nanostars delicate morphology. Under visible-near infrared illumination, TiO2-coated gold nanostars exhibited a significant increase in hydrogen production from water reduction compared to standard TiO2-coated nanoparticles and uncoated nanostars. This optimized TiO2-coated gold nanostar, when photoexcited with broad spectrum radiation, was capable of evolving >2500 μmol H2 per g of catalyst in 20 min, which is 4x more efficient than commercially available TiO2 catalysts.
- High photocatalytic efficiency
- Low temperature synthesis
- Readily available materials for synthesis
- Solar and renewable energy
- Optical Antennas
- Water splitting
Intellectual Property & Development Status:
Patent pending. Available for licensing and/or research collaboration.
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