Near infrared photocatalyst based on TiO2-coated gold nanoparticles

Laura Fabris (Inventor), Fuat Celik (Inventor), Supriya Atta (Inventor)

Research output: Innovation

Abstract

Invention Summary: 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. Advantages: - High photocatalytic efficiency - Low temperature synthesis - Readily available materials for synthesis Market Applications: - Photocatalyst - Solar and renewable energy - Optical Antennas - Water splitting - Biosensor Intellectual Property & Development Status: Patent pending. Available for licensing and/or research collaboration. Publications: Atta et al. Chem, 2018,4,2140-2153. Atta et al.  Faraday Discuss., 2019,214,341-351.
Original languageEnglish (US)
StatePublished - Feb 2020

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