A hybrid compound based on porous metal–organic frameworks and polyoxometalates: NO adsorption and decomposition

A new hybrid compound based on porous metal–organic frameworks and polyoxometalates H4[(Cu4Cl)3(BTC)8]2[SiW12O40]·(C4H12N)6·3H2O (NENU-15, BTC = 1, 3, 5-benzenetricarboxylate) has been hydrothermally synthesized and its crystal structure, stability and porosity have been characterized. The experimental results showed that the introduction of polyoxometalates improved the integral stability of the compound. In addition, NENU-15 was employed in NO removal for the first time. By virtue of the synergistic effect between host frameworks and guest polyoxometalates, it not only displayed good adsorption behavior for NO, but also exhibited superior activity in NO decomposition.

By virtue of the synergistic effect between host frameworks and guest polyoxometalates, the hybrid compound not only displayed good adsorption behavior for NO, but also exhibited superior activity in NO decomposition.Figure optionsDownload as PowerPoint slideHighlights
► A new hybrid compound based on porous MOFs and POMs was synthesized under hydrothermal condition.
► POMs guests enhanced the thermal stability while maintaining the permanently porosity of host frameworks.
► There existed synergetic effect between Keggin type POMs and Cu-containing MOFs.
► The hybrid compound displayed good adsorption behavior for NO.
► The hybrid compound exhibited superior activity in NO decomposition.