US 11,942,281 B2
Carbon-titania nanocomposite thin films and applications of the same
Yu Teng Liang, Chicago, IL (US); Baiju K. Vijayan, Kerala (IN); Kimberly A. Gray, Evanston, IL (US); and Mark C. Hersam, Wilmette, IL (US)
Assigned to NORTHWESTERN UNIVERSITY, Evanston, IL (US)
Filed by NORTHWESTERN UNIVERSITY, Evanston, IL (US)
Filed on Apr. 26, 2023, as Appl. No. 18/139,388.
Application 18/139,388 is a division of application No. 17/518,690, filed on Nov. 4, 2021, granted, now 11,676,773.
Application 17/518,690 is a division of application No. 15/181,802, filed on Jun. 14, 2016, granted, now 11,195,667, issued on Dec. 7, 2021.
Application 15/181,802 is a division of application No. 13/745,092, filed on Jan. 18, 2013, granted, now 9,393,550, issued on Jul. 19, 2016.
Claims priority of provisional application 61/588,059, filed on Jan. 18, 2012.
Prior Publication US 2023/0335343 A1, Oct. 19, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. C01G 23/053 (2006.01); B82Y 30/00 (2011.01); B82Y 40/00 (2011.01); C01B 32/19 (2017.01); C01B 32/192 (2017.01); C09D 11/52 (2014.01); H01G 9/20 (2006.01); H01L 21/00 (2006.01); B01J 21/18 (2006.01)
CPC H01G 9/2022 (2013.01) [B01J 35/39 (2024.01); B82Y 30/00 (2013.01); B82Y 40/00 (2013.01); C01B 32/19 (2017.08); C01B 32/192 (2017.08); C01G 23/053 (2013.01); C09D 11/52 (2013.01); H01L 21/00 (2013.01); B01J 21/18 (2013.01); C01P 2004/03 (2013.01); C01P 2004/04 (2013.01); C01P 2004/24 (2013.01); Y02E 10/542 (2013.01); Y02P 70/50 (2015.11)] 5 Claims
OG exemplary drawing
 
1. A single walled carbon nanotube titania (SWCNT-TiO2) nanocomposite thin film made by a method comprising:
dispersing single walled carbon nanotubes (SWCNTs) in an ethyl-cellulose (EC)-ethanol solution to form a SWCNT solution;
sonicating the SWCNT solution for a first period of time;
disposing the sonicated SWCNT solution in terpineol to perform solvent exchange and to obtain the concentrated SWCNT ink;
forming a titania (TiO2) solution;
blade-coating a mechanical mixture of the concentrated SWCNT ink and the titania solution onto a substrate; and
annealing the blade-coated substrate at a predetermined temperature for a second period of time to obtain the annealed SWCNT-TiO2 nanocomposite thin films, wherein the annealed SWCNT-TiO2 nanocomposite thin film has an intensity ratio, I(D)/I(G), of about 0.5, indicating that the annealed SWCNT-TiO2 nanocomposite thin film has a low carbon defect density, wherein I(D) and I(G) are respectively intensities of a D-band at about 1350 cm−1 to a G-band at about 1590 cm−1 of a Raman spectrum.