[Ag(Bipy)₂]⁺ modified butterfly-like compound: synthesis, structure, and photo/electrocatalytic properties

Abstract

A [Ag (bipy)₂]⁺ modified butterfly-like hybrid network stabilized by [AlW₁₂O₄₀]^5- polyoxoanions, formulated as [Ag(bipy)₂]₈[{Ag(bipy)}{AlW₁₂O₄₀}]₂ (1) (bipy = 2,2’-bipyridine), has been synthesized hydrothermally and characterized by IR, XRD, TG, UV and single crystal X-ray diffraction. In 1, two [{Ag(bipy)}{AlW₁₂O₄₀}]⁴⁻ polyanions form transverse units/longitudinal units through π-π stacking. The transverse units connect two adjacent longitudinal units by [Ag(bipy)₂]⁺ to form a butterfly-like 1 D chain structure. Adjacent butterfly chains form a two-dimensional planar structure similar to the copper-like arrangement through supramolecular interactions of [AlW₁₂O₄₀]⁵⁻ and [Ag(bipy)₂]⁺. Further extension of the 2 D copper-like layers through supramolecular interaction gives a 3 D network. Compound 1 exhibits good charge transfer ability (R_ct = 7.8Ω) and excellent electrocatalytic activity for H₂O₂ reduction. Compound 1 shows efficient degradation of RhB under ultraviolet light.

Graphical Abstract

Keywords:

• Polyoxometalates
• [AlW₁₂O₄₀]⁵⁻
• [Ag(bipy)₂]⁺
• photocatalysis
• electrocatalytic

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work was supported by the National Natural Science Foundation of China under Grant Nos. 21571044 and 21771046; Natural Science Foundation of Heilongjiang Province under Grant number B2017007.