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

111 Citations (Scopus)

Abstract

A new pentanickel silicotungstate complex, K ₁₀H ₂[Ni ₅(OH) ₆(OH ₂) ₃(Si ₂W ₁₈O ₆₆)]·34H ₂O (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 Na ₂S ₂O ₈, 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	Dalton Transactions
Volume	41
Issue number	42
DOIs	https://doi.org/10.1039/c2dt30331k
Publication status	Published - 14 Nov 2012
Externally published	Yes

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@article{1f3d73b851ce473c851d0c3b6b36a500,

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

abstract = "A new pentanickel silicotungstate complex, K 10H 2[Ni 5(OH) 6(OH 2) 3(Si 2W 18O 66)]·34H 2O (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 Na 2S 2O 8, 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 = nov,

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doi = "10.1039/c2dt30331k",

language = "English",

volume = "41",

pages = "13043--13049",

journal = "Dalton Transactions",

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publisher = "Royal Society of Chemistry",

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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 - 2012/11/14

Y1 - 2012/11/14

N2 - A new pentanickel silicotungstate complex, K 10H 2[Ni 5(OH) 6(OH 2) 3(Si 2W 18O 66)]·34H 2O (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 Na 2S 2O 8, 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, K 10H 2[Ni 5(OH) 6(OH 2) 3(Si 2W 18O 66)]·34H 2O (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 Na 2S 2O 8, 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.

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U2 - 10.1039/c2dt30331k

DO - 10.1039/c2dt30331k

M3 - Article

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SN - 1477-9226

VL - 41

SP - 13043

EP - 13049

JO - Dalton Transactions

JF - Dalton Transactions

IS - 42

ER -

A nickel containing polyoxometalate water oxidation catalyst

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