Hydrothermal synthesis, crystal structure and properties of a 3D inorganic–organic hybrid based on Keggin-type polyanion and silver-pyrazine circles

• An unprecedented Ag-Pyrazine-Polyoxometalate framework has been synthesized.
• Compound 1 exhibits a three-dimensional entangled architecture.
• Compound 1 shows outstanding photocatalytic activity for the degradation of RhB.

A new 3D inorganic–organic hybrid based on polyoxometalates (POMs), [Ag4(pz)6(SiW12O40)·H2O] (1), (pz = pyrazine)1 has been hydrothermally synthesized and structurally characterized by single-crystal X-ray diffraction, IR, TG, and UV–vis absorption spectra. In compound 1, there are two identical interpenetrating 3D frameworks containing deca-nuclear silver circles and pz ligands, which are further linked by [SiW12O40]4 − anions to exhibit an entangled architecture. Additionally, its optical band gap, photocatalytic performance and electrochemical behavior at room temperature have been investigated in detail.

A novel three-dimensional AgI/POM-based hybrid has been synthesized and its optical band gaps, electrochemical and photocatalytic performance have been investigated.Figure optionsDownload as PowerPoint slide