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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.:
National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV, and Albany, OR (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1174212
Patent Number(s):
8986511
Application Number:
12/903,282
Assignee:
U.S. Department of Energy (Washington, DC)
Patent Classifications (CPCs):
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02P - CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY
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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Works referenced in this record:

Sensitization of nanocrystalline TiO2 electrode with quantum sized CdSe and ZnTCPc molecules
journal, May 1997


Trends in non-metal doping of anatase TiO2: B, C, N and F
journal, May 2013


Hydrogen generation at irradiated oxide semiconductor–solution interfaces
journal, May 2007


Photocatalytic hydrogen production from natural seawater
journal, June 2007


Photocatalytic reduction of CO2 with H2O on mesoporous silica supported Cu/TiO2 catalysts
journal, October 2010


Location and State of Pt in Platinized CdS/TiO 2 Photocatalysts for Hydrogen Production from Water under Visible Light
journal, October 2008


Semiconductor photocatalytic systems for the production of hydrogen by the action of visible light
journal, July 2009


Photocatalytic reduction of carbon dioxide to hydrocarbon using copper-loaded titanium dioxide
journal, August 1994


Visible Light Photoreduction of CO 2 Using CdSe/Pt/TiO 2 Heterostructured Catalysts
journal, November 2009


Photocatalytic conversion of CH4 and CO2 to oxygenated compounds over Cu/CdS–TiO2/SiO2 catalyst
journal, December 2004