A Co(II)-based non-interpenetration semiconductive metal-organic framework for photocatalytic degradation of organic dye contaminant

Abstract

A new Co(II)-based porous metal-organic framework has been obtained, which exhibit excellent photocatalytic activity for methylene blue degradation. • A 3D metal–organic framework featuring two kind of cages constructed by Co 2 (COO) 4 paddle-wheel clusters and btb tritopic linkers has been synthesized and characterized. • The diffuse reflective spectrum (DRS) indicated that Co(II)-based MOF processing semiconductive behavior. • Co(II)-based MOF shows remarkable photocatalytic degradation of methylene blue under visiable light irradiation. A Co(II)-based porous metal-organic framework, Co 6 (btb) 4 (4,4́-bipy) 3 •44DMA ( 1 ) (btb = benzene-1,3,5-tribenzoate, 4,4́-bipy = 4,4′-bipyridine) which is a 3D neutral framework featuring two kind of cages constructed by Co 2 (COO) 4 paddle-wheel clusters and btb tritopic linkers has been synthesized and characterized. The diffuse reflective spectrum (DRS) indicated that the E g value of 1 is 2.85 eV which confirm it processing semiconductive behavior. The photocatalytic degradation of methylene blue dyes in aqueous solution using 1 as photocatalyst was investigated under UV–vis light and visiable light irradiation. The results show that 1 photocatalyst exhibited the photocatalytic activity for methylene blue degradation.