A nickel containing polyoxometalate water oxidation catalyst

Guibo Zhu; Elliot N. Glass; Chongchao Zhao; Hongjin Lv; James W. Vickers; Yurii V. Geletii; Djamaladdin G. Musaev; Jie Song; Craig L. Hill

doi:10.1039/c2dt30331k

A nickel containing polyoxometalate water oxidation catalyst

Guibo Zhu
, Elliot N. Glass
, Chongchao Zhao
, Hongjin Lv
, James W. Vickers
, Yurii V. Geletii
, Djamaladdin G. Musaev
, Jie Song
, Craig L. Hill^*

^*Corresponding author for this work

Emory University

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

117 Citations (Scopus)

Abstract

A new pentanickel silicotungstate complex, K₁₀H₂[Ni₅(OH)₆(OH₂)₃(Si₂W₁₈O₆₆)]·34H₂O (KH-1), has been synthesized and characterized by X-ray crystallography and several other methods. Dynamic light scattering, kinetics and other experiments confirm that 1 in the presence of [Ru(bpy)₃]²⁺ (the photosensitizer for light-driven water oxidations) and [Ru(bpy)₃]³⁺ (the oxidant in the dark water oxidations) exists in an equilibrium between solution (soluble) and a [Ru(bpy)₃]ⁿ⁺-1 complex (minimally soluble) form. This new pentanickel polyoxometalate catalyzes efficient water oxidation in both the dark and on irradiation with 455 nm LED light with 1.0 mM [Ru(bpy)₃]²⁺ photosensitizer and 5.0 mM Na₂S₂O₈, sacrificial electron acceptor. Four lines of evidence indicate that 1 in this solution ⇌ Ru(bpy)₃]ⁿ⁺-1 complex equilibrium remains molecular and does not decompose to nickel hydroxide particles.

Original language	English
Pages (from-to)	13043-13049
Number of pages	7
Journal	Journal of the Chemical Society. Dalton Transactions
Volume	41
Issue number	42
DOIs	https://doi.org/10.1039/c2dt30331k
Publication status	Published - 10 Oct 2012
Externally published	Yes

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@article{1f3d73b851ce473c851d0c3b6b36a500,

title = "A nickel containing polyoxometalate water oxidation catalyst",

abstract = "A new pentanickel silicotungstate complex, K10H2[Ni5(OH)6(OH2)3(Si2W18O66)]·34H2O (KH-1), has been synthesized and characterized by X-ray crystallography and several other methods. Dynamic light scattering, kinetics and other experiments confirm that 1 in the presence of [Ru(bpy)3]2+ (the photosensitizer for light-driven water oxidations) and [Ru(bpy)3]3+ (the oxidant in the dark water oxidations) exists in an equilibrium between solution (soluble) and a [Ru(bpy)3]n+-1 complex (minimally soluble) form. This new pentanickel polyoxometalate catalyzes efficient water oxidation in both the dark and on irradiation with 455 nm LED light with 1.0 mM [Ru(bpy)3]2+ photosensitizer and 5.0 mM Na2S2O8, sacrificial electron acceptor. Four lines of evidence indicate that 1 in this solution ⇌ Ru(bpy)3]n+-1 complex equilibrium remains molecular and does not decompose to nickel hydroxide particles.",

author = "Guibo Zhu and Glass, \{Elliot N.\} and Chongchao Zhao and Hongjin Lv and Vickers, \{James W.\} and Geletii, \{Yurii V.\} and Musaev, \{Djamaladdin G.\} and Jie Song and Hill, \{Craig L.\}",

year = "2012",

month = oct,

day = "10",

doi = "10.1039/c2dt30331k",

language = "English",

volume = "41",

pages = "13043--13049",

journal = "Journal of the Chemical Society. Dalton Transactions",

issn = "1470-479X",

publisher = "Royal Society of Chemistry",

number = "42",

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T1 - A nickel containing polyoxometalate water oxidation catalyst

AU - Zhu, Guibo

AU - Glass, Elliot N.

AU - Zhao, Chongchao

AU - Lv, Hongjin

AU - Vickers, James W.

AU - Geletii, Yurii V.

AU - Musaev, Djamaladdin G.

AU - Song, Jie

AU - Hill, Craig L.

PY - 2012/10/10

Y1 - 2012/10/10

N2 - A new pentanickel silicotungstate complex, K10H2[Ni5(OH)6(OH2)3(Si2W18O66)]·34H2O (KH-1), has been synthesized and characterized by X-ray crystallography and several other methods. Dynamic light scattering, kinetics and other experiments confirm that 1 in the presence of [Ru(bpy)3]2+ (the photosensitizer for light-driven water oxidations) and [Ru(bpy)3]3+ (the oxidant in the dark water oxidations) exists in an equilibrium between solution (soluble) and a [Ru(bpy)3]n+-1 complex (minimally soluble) form. This new pentanickel polyoxometalate catalyzes efficient water oxidation in both the dark and on irradiation with 455 nm LED light with 1.0 mM [Ru(bpy)3]2+ photosensitizer and 5.0 mM Na2S2O8, sacrificial electron acceptor. Four lines of evidence indicate that 1 in this solution ⇌ Ru(bpy)3]n+-1 complex equilibrium remains molecular and does not decompose to nickel hydroxide particles.

AB - A new pentanickel silicotungstate complex, K10H2[Ni5(OH)6(OH2)3(Si2W18O66)]·34H2O (KH-1), has been synthesized and characterized by X-ray crystallography and several other methods. Dynamic light scattering, kinetics and other experiments confirm that 1 in the presence of [Ru(bpy)3]2+ (the photosensitizer for light-driven water oxidations) and [Ru(bpy)3]3+ (the oxidant in the dark water oxidations) exists in an equilibrium between solution (soluble) and a [Ru(bpy)3]n+-1 complex (minimally soluble) form. This new pentanickel polyoxometalate catalyzes efficient water oxidation in both the dark and on irradiation with 455 nm LED light with 1.0 mM [Ru(bpy)3]2+ photosensitizer and 5.0 mM Na2S2O8, sacrificial electron acceptor. Four lines of evidence indicate that 1 in this solution ⇌ Ru(bpy)3]n+-1 complex equilibrium remains molecular and does not decompose to nickel hydroxide particles.

UR - https://www.scopus.com/pages/publications/84867390221

U2 - 10.1039/c2dt30331k

DO - 10.1039/c2dt30331k

M3 - Article

AN - SCOPUS:84867390221

SN - 1470-479X

VL - 41

SP - 13043

EP - 13049

JO - Journal of the Chemical Society. Dalton Transactions

JF - Journal of the Chemical Society. Dalton Transactions

IS - 42

ER -

A nickel containing polyoxometalate water oxidation catalyst

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