Invention Grant
- Patent Title: Nucleation layers for enhancing photocatalytic activity of titanium dioxide (TiO2) coatings
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Application No.: US15366991Application Date: 2016-12-01
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Publication No.: US10195602B2Publication Date: 2019-02-05
- Inventor: Gayatri Vyas Dadheech , Thomas A. Seder , James A. Carpenter
- Applicant: GM Global Technology Operations LLC
- Applicant Address: US MI Detroit
- Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- Current Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- Current Assignee Address: US MI Detroit
- Agency: Harness, Dickey & Pierce, P.L.C.
- Main IPC: B01J21/04
- IPC: B01J21/04 ; B01J21/06 ; B01J35/00 ; B01J35/02 ; B01J37/00 ; C07D279/20

Abstract:
A photocatalytic system having enhanced photo efficiency/photonic efficacy is provided that includes a thin nucleation material coated on a substrate. The nucleation material enhances lattice matching for a subsequently deposited photocatalytic active material. Such a photocatalytic system may be used as a self-cleaning surface in an application where removal of fingerprints and other residue is desired. In certain aspects, the nucleation material comprises aluminum oxide (Al2O3) and the photocatalytic material comprises an anatase phase of titanium dioxide (TiO2) deposited over the nucleation material. A photocatalytic activity of the system is ≥ about 50% above a comparative photocatalytic activity where the photocatalytic active material is disposed directly on the substrate. Methods of making such photocatalytic systems are also provided.
Public/Granted literature
- US20180154345A1 NUCLEATION LAYERS FOR ENHANCING PHOTOCATALYTIC ACTIVITY OF TITANIUM DIOXIDE (TiO2) COATINGS Public/Granted day:2018-06-07
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