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

作者：Liu, Zhu-Jun^*; Yao, Shuang; Zhang, Zhi-Ming; Wang, En-Bo

来源：RSC Advances, 2013, 3(43): 20829-20835.

DOI：10.1039/c3ra42594k

• METAL-ORGANIC FRAMEWORKS
• BUILDING-BLOCKS
• HYBRID MATERIALS
• PHOTOCATALYTIC DEGRADATION
• WASTE-WATER
• ARTIFICIAL PHOTOSYNTHESIS
• CROWN HETEROPOLYANION
• AZO DYES
• OXIDATION
• ARCHITECTURES

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.

• 出版日期2013
• 单位东北师范大学; 长春理工大学