Cerium oxide-titanium oxide composite thin film electrode
AssigneeKing Fahd University of Petroleum and Minerals
InventorsMuhammad Ali EHSAN, Abdul REHMAN
Life of this patent
Estimating the term…
Abstract
A simple, one-step method for producing a homogenous CeO2—TiO2 composite thin film using aerosol-assisted chemical vapor deposition (“CVD”) of a solution containing triacetatocerium (III) and tetra isopropoxytitanium (IV) on a fluorine-doped tin oxide (“FTO”) substrate at a temperature ranging from about 500 to about 650° C. Methods for using the film produced by this method.
Claims20
The electrode of claim 15, wherein the homogenous CeO2—TiO2 composite thin film is formed by a method comprising:
- dispersing a solution of metal trifluoroacetates of cerium and titanium in a carrier gas to form an aerosol mist,
- conducting aerosol-assisted chemical vapor deposition (“AACVD”) at a temperature in a range of from 500 to 650° C. with the aerosol mist,
- contacting the aerosol mist, in the AACVD, with the fluorine-doped tin oxide substrate, thereby depositing the homogenous CeO2—TiO2 composite film onto the fluorine-doped tin oxide substrate.
(canceled)
(canceled)
(canceled)
(canceled)
The electrode of claim 15, wherein the homogenous CeO2—TiO2 composite thin film comprises porous heterojunctions of CeO2—TiO2 which have spherical-shaped morphologies.
The electrode of claim 15, wherein the homogenous CeO2—TiO2 composite thin film has a bandgap less than either pristine CeO2 or pristine TiO2.
The electrode of claim 15, wherein the homogenous CeO2—TiO2 composite thin film has a bandgap ranging from 2.5 to 2.7 eV.
An electrode comprising a homogenous CeO2—TiO2 composite thin film and a fluorine-doped tin oxide substrate,
- wherein the homogenous CeO2—Ti2 composite thin film comprises:
- uniformly dispersed crystalline CeO2 and TiO2 phases, and
- mesoporous or smooth microspheres comprising CeO2 and/or TiO2 having an average diameter ranging from about 0.8 to 2.0 μm,
- wherein said thin film has a thickness of no more than 100 nm.
(canceled)
(canceled)
Dependencies are inferred from the claim text.