Title: Autogenic reaction synthesis of photocatalysts for solar fuel generation

Abstract

In one preferred embodiment, a photocatalyst for conversion of carbon dioxide and water to a hydrocarbon and oxygen comprises at least one nanoparticulate metal or metal oxide material that is substantially free of a carbon coating, prepared by heating a metal-containing precursor compound in a sealed reactor under a pressure autogenically generated by dissociation of the precursor material in the sealed reactor at a temperature of at least about 600.degree. C. to form a nanoparticulate carbon-coated metal or metal oxide material, and subsequently substantially removing the carbon coating. The precursor material comprises a solid, solvent-free salt comprising a metal ion and at least one thermally decomposable carbon- and oxygen-containing counter-ion, and the metal of the salt is selected from the group consisting of Mn, Ti, Sn, V, Fe, Zn, Zr, Mo, Nb, W, Eu, La, Ce, In, and Si.

Inventors:

Ingram, Brian J.; Pol, Vilas G.; Cronauer, Donald C.; Ramanathan, Muruganathan

Issue Date:

Tue Apr 19 00:00:00 EDT 2016

Research Org.:

Argonne National Laboratory (ANL), Argonne, IL (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1248021

Patent Number(s):

9314770

Application Number:

13/247,759

Assignee:

UCHICAGO ARGONNE, LLC (Chicago, IL)

Patent Classifications (CPCs):

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY

B - PERFORMING OPERATIONS B82 - NANOTECHNOLOGY B82Y - SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES

Show more

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY

B01J21/063 - {Titanium
B01J23/06 - of zinc, cadmium or mercury
B01J23/10 - of rare earths
B01J23/14 - of germanium, tin or lead
B01J23/745 - Iron
B01J35/0013 - {Colloids}
B01J35/004 - {Photocatalysts}
B01J37/08 - Heat treatment {
B01J37/084 - {Decomposition of carbon-containing compounds into carbon}
B01J37/14 - with gases containing free oxygen

B - PERFORMING OPERATIONS B82 - NANOTECHNOLOGY B82Y - SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES

B82Y30/00 - Nanotechnology for materials or surface science, e.g. nanocomposites

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01F - COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS

C01F17/235 - Cerium oxides or hydroxides

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01G - COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F

C01G19/02 - Oxides
C01G23/047 - Titanium dioxide

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01P - INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS

C01P2002/54 - one element only
C01P2002/72 - by d-values or two theta-values, e.g. as X-ray diagram
C01P2002/82 - by IR- or Raman-data
C01P2002/85 - by XPS, EDX or EDAX data
C01P2004/04 - obtained by TEM, STEM, STM or AFM
C01P2004/64 - Nanometer sized, i.e. from 1-100 nanometer
C01P2006/80 - Compositional purity

C - CHEMISTRY C07 - ORGANIC CHEMISTRY C07C - ACYCLIC OR CARBOCYCLIC COMPOUNDS

C07C1/12 - from carbon dioxide with hydrogen
C07C2521/06 - Silicon, titanium, zirconium or hafnium
C07C2523/06 - of zinc, cadmium or mercury
C07C2523/10 - of rare earths
C07C2523/14 - of germanium, tin or lead
C07C2523/745 - Iron
C07C9/04 - Methane

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

Y02P20/52 - using catalysts, e.g. selective catalysts

Show less

DOE Contract Number:  

AC02-06CH11357

Resource Type:

Patent

Resource Relation:

Patent File Date: 2011 Sep 28

Country of Publication:

United States

Language:

English

Subject:

14 SOLAR ENERGY; 36 MATERIALS SCIENCE; 30 DIRECT ENERGY CONVERSION