Visible-Light Photoconversion of Carbon Dioxide into Organic Acids in an Aqueous Solution of Carbon Dots
Document Type
Article
Publication Date
2014
Publication Source
Langmuir
Abstract
Carbon “quantum” dots (or carbon dots) have emerged as a new class of optical nanomaterials. Beyond the widely reported bright fluorescence emissions in carbon dots, their excellent photoinduced redox properties that resemble those found in conventional semiconductor nanostructures are equally valuable, with photon–electron conversion applications from photovoltaics to CO2 photocatalytic reduction. In this work we used gold-doped carbon dots from controlled synthesis as water-soluble catalysts for a closer examination of the visible-light photoconversion of CO2 into small organic acids, including acetic acid (for which the reduction requires many more electrons than that for formic acid) and, more interestingly, for the significantly enhanced photoconversion with higher CO2 pressures over an aqueous solution of the photocatalysts. The results demonstrate the nanoscale semiconductor-equivalent nature of carbon dots, with excellent potential in energy conversion applications.
Inclusive pages
8631–8636
ISBN/ISSN
0743-7463
Copyright
Copyright © 2014, American Chemical Society
Publisher
American Chemical Society
Volume
30
Peer Reviewed
yes
Issue
28
eCommons Citation
Sahu, Sushant; Liu, Yamin; Wang, Ping; Bunker, Christopher E.; Fernando, K. A. Shiral; Lewis, William K.; Guliants, Elena A.; Yang, Fan; Wang, Jinping; and Sun, Ya-Ping, "Visible-Light Photoconversion of Carbon Dioxide into Organic Acids in an Aqueous Solution of Carbon Dots" (2014). Electrical and Computer Engineering Faculty Publications. 156.
https://ecommons.udayton.edu/ece_fac_pub/156
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Comments
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