US 12,442,804 B2
Noble metal decorated ordered metal oxide nanostructure thin films
Jiansong Miao, Tempe, AZ (US); and Jerry Lin, Scottsdale, AZ (US)
Assigned to Arizona Board of Regents on behalf of Arizona State University, Scottsdale, AZ (US)
Filed by Jiansong Miao, Tempe, AZ (US); and Jerry Lin, Scottsdale, AZ (US)
Filed on Sep. 29, 2021, as Appl. No. 17/489,639.
Claims priority of provisional application 63/084,885, filed on Sep. 29, 2020.
Prior Publication US 2022/0099643 A1, Mar. 31, 2022
Int. Cl. G01N 33/00 (2006.01); B82Y 40/00 (2011.01); G01N 27/12 (2006.01); B01J 23/52 (2006.01)
CPC G01N 33/0031 (2013.01) [B82Y 40/00 (2013.01); G01N 27/127 (2013.01); B01J 23/52 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A sensing film comprising:
a metal oxide film, wherein the metal oxide film is a monolayer comprising a plurality of metal oxide nanostructures; and
noble metal nanoparticles disposed on the metal oxide film, wherein the sensing film is configured to detect an analyte gas,
wherein the plurality of metal oxide nanostructures comprise aligned zinc (II) oxide nanowires arranged as a single nanowire thick layer, the zinc (II) oxide nanowires having a hexagonal wurtzite crystal structure and a width in a range of about 10 nm to about 30 nm, and a surface of the sensing film comprises periodic V-shaped grooves defined by surfaces of adjacent nanowires in the single nanowire thick layer.
 
12. A sensing film comprising:
a metal oxide film, wherein the metal oxide film is a monolayer comprising a plurality of metal oxide nanostructures, and the metal oxide film is formed by compressed Langmuir-Blodgett assembly; and
noble metal nanoparticles disposed on the metal oxide film, wherein the sensing film is configured to detect an analyte gas,
wherein the plurality of metal oxide nanostructures comprise aligned zinc (II) oxide nanowires arranged as a single nanowire thick layer, the zinc (II) oxide nanowires having a hexagonal wurtzite crystal structure and a width in a range of about 10 nm to about 30 nm, and a surface of the sensing film comprises periodic V-shaped grooves defined by surfaces of adjacent nanowires in the single nanowire thick layer.