A polyoxometalate-based ionic crystal assembly from a heterometallic cluster and polyoxoanions with visible-light catalytic activity

Overview

Title: 

A polyoxometalate-based ionic crystal assembly from a heterometallic cluster and polyoxoanions with visible-light catalytic activity

Abstract: 

A polyoxometalate-based inorganic-organic hybrid [WO4{Ni(en)(2)(H2O)}(3)] [Ni(en)(3)]{P2W18O62}center dot[Ni(en)(3)] CO3 center dot H2O (1) (en = ethanediamine), was synthesized under hydrothermal conditions, and characterized by IR, elemental analyses, XPRD, UV diffuse reflectance spectroscopy and single crystal X-ray diffraction analyses. Compound 1 consists of a heterometallic cluster [WO4{Ni(en)(2)(H2O)}(3)](4+), two [Ni(en)(3)](2+) groups, one [CO3](2-) group, one water molecule and a Wells-Dawson anion [P2W18O62](6-) ({P2W18}), which represents the first POM-based ionic crystal with the heterometallic macrocation cluster. Photocatalytic studies indicate that compound 1 is not only actively photocatalytic for degradation of methylene blue (MB) under visible light irradiation, but very stable and easily separated from the reaction system for reuse as well.

Authors: 

Zhu-Jun Liu, Shuang Yao, Zhi-Ming Zhang, En-Bo Wang

DOI: 

Journal: 

Rsc Advances

Year: 

2013

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