18 August 2016 Photocatalytic CO2 reduction by highly dispersed Cu sites on TiO2
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Two nanocomposite photocatalysts were synthesized by forming highly dispersed Cu sites on TiO 2 surfaces. The synthesized materials were characterized with microscopy, UV-visible, and infrared spectroscopy, and tested in photocatalytic CO 2 reduction. Computational modeling was conducted to elucidate the role of single Cu sites in promoting CO 2 reduction on TiO 2 . The nanocomposites demonstrated significantly higher activity than bare TiO 2 in photocatalysis, and the activity was found to be related to the chemical state of surface Cu + species. According to our modeling studies, the highly dispersed Cu sites likely contributed to the improved photocatalysis by stabilizing surface adsorption of CO 2 on TiO 2 . Our experimental and modeling studies further confirmed the direct involvement of surface Cu sites in CO generation via CO 2 reduction.
© 2016 Society of Photo-Optical Instrumentation Engineers (SPIE)
Nathaniel Aaron Deskins, Nathaniel Aaron Deskins, Chao Liu, Chao Liu, Satish Kumar Iyemperumal, Satish Kumar Iyemperumal, Gonghu Li, Gonghu Li, } "Photocatalytic CO2 reduction by highly dispersed Cu sites on TiO2," Journal of Photonics for Energy 7(1), 012004 (18 August 2016). https://doi.org/10.1117/1.JPE.7.012004 . Submission:

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