Chemical bath method to grow precipitated nanorods of iridium oxide on alumina membranes

Author

Nguyen, Cuong M. ; Thumthan, O. ; Huang, Chao ; Tata, Uday ; Hao, Yuwen ; Chiao, J.-C.

Author_Institution

Dept. of Electr. Eng., Univ. of Texas at Arlington, Arlington, TX, USA

Volume

7

Issue

12

fYear

2012

fDate

12/1/2012 12:00:00 AM

Firstpage

1256

Lastpage

1259

Abstract

High aspect ratio iridium (IV) oxide nanorods have been successfully grown on a copper thin film by a chemical co-precipitation method. A porous anodised aluminium oxide (AAO) template was implemented to assist the growth of the well aligned and densely packed iridium oxide (IrO₂) nanostructures. Nanorods with an aspect ratio of 22 can be synthesised within 45 min. X-ray diffraction measurement unveiled the crucial role of the AAO template in the orientation-aligned growth of IrO₂ nanorods along the [110] crystallography direction. The large surface area of IrO₂ nanostructures exhibiting a high capacitive property can be utilised in supercapacitors or sensing applications. Owing to the simpler fabrication processes, IrO₂ nanorods can be mass produced in a short period of time.

Keywords

X-ray diffraction; iridium compounds; nanofabrication; nanorods; precipitation (physical chemistry); Cu; IrO₂; X-ray diffraction measurement; [110] crystallography direction; aligned iridium oxide nanostructures; alumina membranes; chemical bath method; chemical coprecipitation method; copper thin film; densely packed iridium oxide nanostructures; high aspect ratio iridium oxide nanorods; high capacitive property; orientation-aligned growth; porous anodised aluminium oxide template; precipitated nanorods; sensing applications; supercapacitors; surface area; time 45 min;

fLanguage

English

Journal_Title

Micro & Nano Letters, IET

Publisher

iet

ISSN

1750-0443

Type

jour

DOI

10.1049/mnl.2012.0730

Filename

6419607