206237
Iridium(IV) oxide
99.9% trace metals basis
Synonym(s):
Iridium dioxide
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About This Item
Linear Formula:
IrO2
CAS Number:
Molecular Weight:
224.22
EC Number:
MDL number:
UNSPSC Code:
12352303
eCl@ss:
38191204
PubChem Substance ID:
NACRES:
NA.23
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Quality Level
Assay
99.9% trace metals basis
form
powder
application(s)
battery manufacturing
SMILES string
O=[Ir]=O
InChI
1S/Ir.2O
InChI key
HTXDPTMKBJXEOW-UHFFFAOYSA-N
General description
Iridium oxide is a ceramic material with unique properties like long-term stability, sensitivity, electrochemical catalytic activity, and excellent biocompatibility. It can be formed from Ir metal by different methods like thermal decomposition, reactive sputtering, and electrochemical deposition. It is widely used in bio-electronic devices.
Application
Iridium(IV) oxide can be used as:
- An indicator electrode in solid-state pH sensors.
- Coating material for stimulation electrodes.
- An anodic catalyst for oxygen evolution through a water-splitting reaction in a polymer electrolyte membrane (PEM) cell.
Storage Class Code
11 - Combustible Solids
WGK
WGK 3
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Personal Protective Equipment
dust mask type N95 (US), Eyeshields, Gloves
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Narayanappa Sivasankar et al.
Journal of the American Chemical Society, 133(33), 12976-12979 (2011-07-21)
A surface hydroperoxide intermediate has been detected upon oxidation of water at an Ir oxide nanocluster catalyst system under pulsed excitation of a [Ru(bpy)(3)](2+) visible light sensitizer by recording of the OO vibrational mode at 830 cm(-1). Rapid-scan FT-IR spectroscopy
Yixin Zhao et al.
Small (Weinheim an der Bergstrasse, Germany), 7(14), 2087-2093 (2011-06-17)
A facile, in-situ deposition route to stable iridium oxide (IrO(x)·nH(2)O) nanoparticle thin films from [Ir(OH)(6)](2-) solutions is reported. The [Ir(OH)(6)](2-) solution, made by alkaline hydrolysis of [IrCl(6)](2-), is colorless and stable near neutral pH, and forms blue IrO(x)·nH(2)O nanoparticle suspensions
Yoon Sung Nam et al.
Nanoscale, 4(11), 3405-3409 (2012-05-11)
A highly porous electrode comprised of biologically templated iridium oxide-gold (IrO(2)-Au) hybrid nanowires is introduced for electrochromic applications. A filamentous M13 virus is genetically engineered to display IrO(2)-binding peptides on the viral surface and used as a template for the
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Elisabet Prats-Alfonso et al.
Biosensors & bioelectronics, 39(1), 163-169 (2012-08-04)
This work demonstrates the implementation of iridium oxide films (IROF) grown on silicon-based thin-film platinum microelectrodes, their utilization as a pH sensor, and their successful formatting into a urea pH sensor. In this context, Pt electrodes were fabricated on Silicon
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