Electroless deposition of iridium oxide nanoparticles promoted by condensation of [Ir(OH)6]2- on an anodized Au surface: application to electrocatalysis of the oxygen evolution reaction

Pitchiah Esakki Karthik; K Alagar Raja; Shanmugam M Senthil Kumar; Kanala Lakshminarasimha Narasimha Phani; Yuping Liu; Si-Xuan Guo; Jie Zhang; Alan Maxwell Bond

doi:10.1039/c4ra14392b

Electroless deposition of iridium oxide nanoparticles promoted by condensation of [Ir(OH)6]2- on an anodized Au surface: application to electrocatalysis of the oxygen evolution reaction

Pitchiah Esakki Karthik, K Alagar Raja, Shanmugam M Senthil Kumar, Kanala Lakshminarasimha Narasimha Phani, Yuping Liu, Si-Xuan Guo, Jie Zhang, Alan Maxwell Bond

School of Chemistry

Research output: Contribution to journal › Article › Research › peer-review

34 Citations (Scopus)

Abstract

The high reactivity of anodized gold for the condensation of [Ir(OH)6]2- provides a simple procedure for the electroless deposition of catalytically active IrOx nanoparticles supported on a gold electrode (IrOx/Au). With a very low overpotential (?) of only about 370 mV (0.1 M NaOH) required to give a current density of 10 mA cm-2, an average value for a turn over frequency (TOF1.56V) of 6.2 s-1, and high stability under long term catalytic turn-over, the IrOx/Au composite provides the simplest method yet developed for highly efficient iridium oxide-based electrocatalysis of the water oxidation reaction.

Original language	English
Pages (from-to)	3196 - 3199
Number of pages	4
Journal	RSC Advances
Volume	5
Issue number	5
DOIs	https://doi.org/10.1039/c4ra14392b
Publication status	Published - 2015

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Esakki Karthik, P., Raja, K. A., Senthil Kumar, S. M., Phani, K. L. N., Liu, Y., Guo, S-X., Zhang, J., & Bond, A. M. (2015). Electroless deposition of iridium oxide nanoparticles promoted by condensation of [Ir(OH)6]2- on an anodized Au surface: application to electrocatalysis of the oxygen evolution reaction. RSC Advances, 5(5), 3196 - 3199. https://doi.org/10.1039/c4ra14392b

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title = "Electroless deposition of iridium oxide nanoparticles promoted by condensation of [Ir(OH)6]2- on an anodized Au surface: application to electrocatalysis of the oxygen evolution reaction",

abstract = "The high reactivity of anodized gold for the condensation of [Ir(OH)6]2- provides a simple procedure for the electroless deposition of catalytically active IrOx nanoparticles supported on a gold electrode (IrOx/Au). With a very low overpotential (?) of only about 370 mV (0.1 M NaOH) required to give a current density of 10 mA cm-2, an average value for a turn over frequency (TOF1.56V) of 6.2 s-1, and high stability under long term catalytic turn-over, the IrOx/Au composite provides the simplest method yet developed for highly efficient iridium oxide-based electrocatalysis of the water oxidation reaction.",

author = "{Esakki Karthik}, Pitchiah and Raja, {K Alagar} and {Senthil Kumar}, {Shanmugam M} and Phani, {Kanala Lakshminarasimha Narasimha} and Yuping Liu and Si-Xuan Guo and Jie Zhang and Bond, {Alan Maxwell}",

year = "2015",

doi = "10.1039/c4ra14392b",

language = "English",

volume = "5",

pages = "3196 -- 3199",

journal = "RSC Advances",

issn = "2046-2069",

publisher = "The Royal Society of Chemistry",

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Esakki Karthik, P, Raja, KA, Senthil Kumar, SM, Phani, KLN, Liu, Y, Guo, S-X , Zhang, J & Bond, AM 2015, 'Electroless deposition of iridium oxide nanoparticles promoted by condensation of [Ir(OH)6]2- on an anodized Au surface: application to electrocatalysis of the oxygen evolution reaction', RSC Advances, vol. 5, no. 5, pp. 3196 - 3199. https://doi.org/10.1039/c4ra14392b

Electroless deposition of iridium oxide nanoparticles promoted by condensation of [Ir(OH)6]2- on an anodized Au surface: application to electrocatalysis of the oxygen evolution reaction. / Esakki Karthik, Pitchiah; Raja, K Alagar; Senthil Kumar, Shanmugam M et al.
In: RSC Advances, Vol. 5, No. 5, 2015, p. 3196 - 3199.

Research output: Contribution to journal › Article › Research › peer-review

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T1 - Electroless deposition of iridium oxide nanoparticles promoted by condensation of [Ir(OH)6]2- on an anodized Au surface: application to electrocatalysis of the oxygen evolution reaction

AU - Esakki Karthik, Pitchiah

AU - Raja, K Alagar

AU - Senthil Kumar, Shanmugam M

AU - Phani, Kanala Lakshminarasimha Narasimha

AU - Liu, Yuping

AU - Guo, Si-Xuan

AU - Zhang, Jie

AU - Bond, Alan Maxwell

PY - 2015

Y1 - 2015

N2 - The high reactivity of anodized gold for the condensation of [Ir(OH)6]2- provides a simple procedure for the electroless deposition of catalytically active IrOx nanoparticles supported on a gold electrode (IrOx/Au). With a very low overpotential (?) of only about 370 mV (0.1 M NaOH) required to give a current density of 10 mA cm-2, an average value for a turn over frequency (TOF1.56V) of 6.2 s-1, and high stability under long term catalytic turn-over, the IrOx/Au composite provides the simplest method yet developed for highly efficient iridium oxide-based electrocatalysis of the water oxidation reaction.

AB - The high reactivity of anodized gold for the condensation of [Ir(OH)6]2- provides a simple procedure for the electroless deposition of catalytically active IrOx nanoparticles supported on a gold electrode (IrOx/Au). With a very low overpotential (?) of only about 370 mV (0.1 M NaOH) required to give a current density of 10 mA cm-2, an average value for a turn over frequency (TOF1.56V) of 6.2 s-1, and high stability under long term catalytic turn-over, the IrOx/Au composite provides the simplest method yet developed for highly efficient iridium oxide-based electrocatalysis of the water oxidation reaction.

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U2 - 10.1039/c4ra14392b

DO - 10.1039/c4ra14392b

M3 - Article

SN - 2046-2069

VL - 5

SP - 3196

EP - 3199

JO - RSC Advances

JF - RSC Advances

IS - 5

ER -

Electroless deposition of iridium oxide nanoparticles promoted by condensation of [Ir(OH)6]2- on an anodized Au surface: application to electrocatalysis of the oxygen evolution reaction

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Energy conversion reactions: fine tuning of electrolytic activity through surface manipulation guided by in-situ spectroscopic and microscopic techniques

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Electroless deposition of iridium oxide nanoparticles promoted by condensation of [Ir(OH)6]2- on an anodized Au surface: application to electrocatalysis of the oxygen evolution reaction

Abstract

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Energy conversion reactions: fine tuning of electrolytic activity through surface manipulation guided by in-situ spectroscopic and microscopic techniques

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