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Title: Visible light photoreduction of CO.sub.2 using heterostructured catalysts

Abstract

The method provides for use of sensitized photocatalyst for the photocatalytic reduction of CO.sub.2 under visible light illumination. The photosensitized catalyst is comprised of a wide band gap semiconductor material, a transition metal co-catalyst, and a semiconductor sensitizer. The semiconductor sensitizer is photoexcited by visible light and forms a Type II band alignment with the wide band gap semiconductor material. The wide band gap semiconductor material and the semiconductor sensitizer may be a plurality of particles, and the particle diameters may be selected to accomplish desired band widths and optimize charge injection under visible light illumination by utilizing quantum size effects. In a particular embodiment, CO.sub.2 is reduced under visible light illumination using a CdSe/Pt/TiO2 sensitized photocatalyst with H.sub.2O as a hydrogen source.

Inventors:
; ;
Issue Date:
Research Org.:
U.S. Department of Energy, Washington, DC (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1174212
Patent Number(s):
8,986,511
Application Number:
12/903,282
Assignee:
U.S. Department of Energy (Washington, DC)
Resource Type:
Patent
Resource Relation:
Patent File Date: 2010 Oct 13
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Matranga, Christopher, Thompson, Robert L, and Wang, Congjun. Visible light photoreduction of CO.sub.2 using heterostructured catalysts. United States: N. p., 2015. Web.
Matranga, Christopher, Thompson, Robert L, & Wang, Congjun. Visible light photoreduction of CO.sub.2 using heterostructured catalysts. United States.
Matranga, Christopher, Thompson, Robert L, and Wang, Congjun. Tue . "Visible light photoreduction of CO.sub.2 using heterostructured catalysts". United States. https://www.osti.gov/servlets/purl/1174212.
@article{osti_1174212,
title = {Visible light photoreduction of CO.sub.2 using heterostructured catalysts},
author = {Matranga, Christopher and Thompson, Robert L and Wang, Congjun},
abstractNote = {The method provides for use of sensitized photocatalyst for the photocatalytic reduction of CO.sub.2 under visible light illumination. The photosensitized catalyst is comprised of a wide band gap semiconductor material, a transition metal co-catalyst, and a semiconductor sensitizer. The semiconductor sensitizer is photoexcited by visible light and forms a Type II band alignment with the wide band gap semiconductor material. The wide band gap semiconductor material and the semiconductor sensitizer may be a plurality of particles, and the particle diameters may be selected to accomplish desired band widths and optimize charge injection under visible light illumination by utilizing quantum size effects. In a particular embodiment, CO.sub.2 is reduced under visible light illumination using a CdSe/Pt/TiO2 sensitized photocatalyst with H.sub.2O as a hydrogen source.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2015},
month = {3}
}

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