Efficient degradation of reactive brilliant red on the first open-framework borate-rich cadmium borophosphate

Abstract

A novel open-framework borate-rich cadmium borophosphate has been obtained by the boric acid reflux method. The compound exhibits a complicated network which is composed of CdO₆ octahedra and an interesting 1D wheel-shaped anion, _∞{[BO₂(OH)]₃B₆P₆O₂₇}¹²ⁿ⁻, built from trigonal-planar BO₂(OH), tetrahedral BO₄ and PO₄ units. This work not only features the first open-framework borate-rich (B/P > 1) cadmium borophosphate, but also exhibits its excellent ion-exchange capacities with Na⁺ cations and efficient photocatalytic activities for the degradation of reactive brilliant red (X3B).