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Journal of Photonics for Energy

Photocatalytic CO2 reduction by highly dispersed Cu sites on TiO2
Author(s): Nathaniel Aaron Deskins; Chao Liu; Satish Kumar Iyemperumal; Gonghu Li
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Paper Abstract

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.

Paper Details

Date Published: 18 August 2016
PDF: 10 pages
J. Photon. Energy 7(1) 012004 doi: 10.1117/1.JPE.7.012004
Published in: Journal of Photonics for Energy Volume 7, Issue 1
Show Author Affiliations
Nathaniel Aaron Deskins, Worcester Polytechnic Institute (United States)
Chao Liu, University of New Hampshire (United States)
Satish Kumar Iyemperumal, Worcester Polytechnic Institute (United States)
Gonghu Li, University of New Hampshire (United States)

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